A big γ-ray burst at a redshift of z ≈ 8.2 (2009)
Tanvir, N. R., Fox, D. B., Levan, A. J., Berger, E., Wiersema, K., Fynbo, J. P. U., ...
4 pages, 3 figures.-- ArXiv pre-print available at: http://arxiv.org/abs/0906.1577
A γ-ray burst at a redshift of z ≈ 8.2 (2009)
Tanvir, N. R., Fox , D. B., Levan, A. J., Berger, E., Wiersema, K., Fynbo, J. P. U., ...
Long-duration γ-ray bursts (GRBs) are thought to result from the explosions of certain massive stars, and some are bright enough that they should be observable out to redshifts of z > 20 using...
Lampeitl, H., Nichol, R. C., Giannantonio, T., Shapiro, C., Bassett, B., ...
We present an analysis of the luminosity distances of Type Ia Supernovae from the Sloan Digital Sky Survey-II (SDSS-II) Supernova Survey in conjunction with other intermediate redshift (z97% level...
Dust and the Type II-Plateau Supernova 2004et (2009)
Kotak, R., Meikle, W. P. S., Farrah, D., Gerardy, C. L., Foley, R. J., Van Dyk, S. D., ...
We present mid-infrared (MIR) observations of the Type II-plateau supernova (SN) 2004et, obtained with the Spitzer Space Telescope between 64 and 1406 days past explosion. Late-time optical spectra...
Sollerman, J., Mörtsell, E., Davis, T. M., Blomqvist, M., Bassett, B., Becker, A. C., ...
We use the new SNe Ia discovered by the SDSS-II Supernova Survey together with additional supernova datasets as well as observations of the cosmic microwave background and baryon acoustic...
The normal Type Ia SN 2003hv out to very late phases (2009)
Leloudas, G., Stritzinger, M. D., Sollerman, J., Burns, C. R., Kozma, C., Krisciunas, K., ...
An extensive dataset for SN 2003hv that covers the flux evolution from maximum light to day +786 is presented. The data are combined with published nebular-phase infrared spectra, and the...
Fynbo, J. P. U., Jakobsson, P., Prochaska, J. X., Malesani, D., Ledoux, C., Postigo, A. De Ugarte, ...
(Abridged). We present a sample of 77 optical afterglows (OAs) of Swift detected GRBs for which spectroscopic follow-up observations have been secured. We provide linelists and equivalent widths for...
A glimpse of the end of the dark ages: the gamma-ray burst of 23 April 2009 at redshift 8.3 (2009)
Tanvir, N. R., Fox, D. B., Levan, A. J., Berger, E., Wiersema, K., Fynbo, J. P. U., ...
It is thought that the first generations of massive stars in the Universe were an important, and quite possibly dominant, source of the ultra-violet radiation that reionized the hydrogen gas in the...
Observational and theoretical constraints for an H$\alpha$-halo around the Crab Nebula (2009)
Tziamtzis, A., Schirmer, M., Lundqvist, P., Sollerman, J.
We searched for a fast moving H$\alpha$ shell around the Crab nebula. Such a shell could account for this supernova remnant's missing mass, and carry enough kinetic energy to make SN 1054 a normal...
Early spectroscopic identification of SN 2008D. (2009)
Malesani, D., Fynbo, J.P.U., Hjorth, J., Leloudas, G., Sollerman, J., Stritzinger, M., ...
Original article can be found at: http://www.iop.org/EJ/journal/apjl Copyright American Astronomical Society DOI: 10.1088/0004-637X/692/2/L84 [Full text of this article is not available in the UHRA]
The normal type Ia SN 2003hv out to very late phases (2009)
Leloudas, G., Stritzinger, M. D., Sollerman, J., Burns, C. R., Kozma, C., Krisciunas, K., ...
Xu, D., Starling, R. L. C., Fynbo, J. P. U., Sollerman, J., Yost, S., Watson, D., ...
GRB060505 and GRB060614 are nearby long-duration gamma-ray bursts (LGRBs) without accompanying supernovae (SNe) down to very strict limits. They thereby challenge the conventional LGRB-SN connection...
Spectroscopy of High-Redshift Supernovae from the ESSENCE Project: The First Four Years (2008)
Foley, R. J., Matheson, T., Blondin, S., Chornock, R., Silverman, J. M., Challis, P., ...
We present the results of spectroscopic observations from the ESSENCE high-redshift supernova (SN) survey during its first four years of operation. This sample includes spectra of all SNe Ia whose...
Elíasdóttir, Á., Fynbo, J. P. U., Hjorth, J., Ledoux, C., Watson, D., Andersen, A. C., ...
We report the clear detection of the 2175A dust absorption feature in the optical afterglow spectrum of the gamma-ray burst (GRB) GRB070802 at a redshift of z=2.45. This is the highest redshift for a...
IFU observations of the GRB 980425/SN 1998bw host galaxy: emission line ratios in GRB regions (2008)
Christensen, L., Vreeswijk, P. M., Sollerman, J., Thoene, C. C., Floc'h, E. Le, Wiersema, K.
The collapsar model predicts that the progenitors of Gamma-ray Bursts (GRBs) are metal poor in Fe group elements. The existence of low metallicity stellar populations could manifest itself through...
Exploring the Outer Solar System with the ESSENCE Supernova Survey (2008)
Becker, A. C., Arraki, K., Kaib, N. A., Wood-Vasey, W. M., Aguilera, C., Blackman, J. W., ...
We report the discovery and orbit determination of 14 trans-Neptunian objects (TNOs) from the ESSENCE Supernova Survey difference imaging dataset. Two additional objects discovered in a similar...
Early spectroscopic identification of SN 2008D (2008)
Malesani, D., Fynbo, J. P. U., Hjorth, J., Leloudas, G., Sollerman, J., Stritzinger, M. D., ...
SN 2008D was discovered while following up an unusually bright X-ray transient in the nearby spiral galaxy NGC 2770. We present early optical spectra (obtained 1.75 days after the X-ray transient)...
Time Dilation in Type Ia Supernova Spectra at High Redshift (2008)
Blondin, S., Davis, T. M., Krisciunas, K., Schmidt, B. P., Sollerman, J., Wood-Vasey, W. M., ...
We present multiepoch spectra of 13 high-redshift Type Ia supernovae (SNe Ia) drawn from the literature, the ESSENCE and SNLS projects, and our own separate dedicated program on the ESO Very Large...
Constraining the mass of the GRB 030329 progenitor (2008)
Ostlin, G., Zackrisson, E., Sollerman, J., Mattila, S., Hayes, M.
The long-duration gamma-ray burst (GRB) 030329, associated with supernova (SN) 2003dh, occurred inside a star-forming dwarf galaxy at redshift $z=0.1685$. The low redshift, and a rich set of archival...
Time Dilation in Type Ia Supernova Spectra at High Redshift (2008)
Blondin, S., Krisciunas, K., Schmidt, B.P., Sollerman, J., Wood-Vasey, W.M., ...
We present multiepoch spectra of 13 high-redshift Type Ia supernovae (SNe Ia) drawn from the literature, the ESSENCE and SNLS projects, and our own separate dedicated program on the ESO Very Large...
Exploring the Outer Solar System with the Essence Supernova Survey (2008)
Becker, A.C., Arraki, K., Kaib, N.A., Wood-Vasey, W.M., Aguilera, C., Blackman, J.W., ...
We report the discovery and orbital determination of 14 trans-Neptunian objects (TNOs) from the ESSENCE Supernova Survey difference imaging data set. Two additional objects discovered in a similar...
Thöne, C.C., Fynbo, J.P.U., Östlin, G., Milvang-Jensen, B., Wiersema, K., Malesani, D., ...
GRB 060505 was the first well-observed nearby possible long-duration gamma-ray burst ( GRB) that had no associated supernova. Here we present spatially resolved spectra of the host galaxy of GRB...
Constraining Cosmic Evolution of Type Ia Supernovae (2007)
Foley, Ryan J., Filippenko, A. V., Aguilera, C., Becker, A. C., Blondin, S., Challis, P., ...
We present the first large-scale effort of creating composite spectra of high-redshift type Ia supernovae (SNe Ia) and comparing them to low-redshift counterparts. Through the ESSENCE project, we...
The Sloan Digital Sky Survey-II Supernova Survey: Technical Summary (2007)
Frieman, Joshua A., Bassett, B., Becker, A., Choi, C., Cinabro, D., DeJongh, F., ...
The Sloan Digital Sky Survey-II (SDSS-II) has embarked on a multi-year project to identify and measure light curves for intermediate-redshift (0.05 < z < 0.35) Type Ia supernovae (SNe Ia) using...
Meikle, W. P. S., Mattila, S., Pastorello, A., Gerardy, C. L., Kotak, R., Sollerman, J., ...
We present a new, detailed analysis of late-time mid-infrared observations of the Type II-P supernova (SN) 2003gd. At about 16 months after the explosion, the mid-IR flux is consistent with emission...
Ruiz-Velasco, A. E., Swan, H., Troja, E., Malesani, D., Fynbo, J. P. U., Starling, R. L. C., ...
We report on follow-up observations of the GRB 060927 using the ROTSE-IIIa telescope and a suite of larger aperture ground-based telescopes. An optical afterglow was detected 20 s after the burst,...
Meikle, W. P. S., Mattila, S., Pastorello, A., Gerardy, C. L., Kotak, R., Sollerman, J., ...
We present a new, detailed analysis of late-time mid-infrared (IR) observations of the Type II-P supernova (SN) 2003gd. At about 16 months after the explosion, the mid-IR flux is consistent with...
SN 2003du: 480 days in the Life of a Normal Type Ia Supernova (2007)
Stanishev, V., Goobar, A., Benetti, S., Kotak, R., Pignata, G., Navasardyan, H., ...
An extensive set of optical and NIR photometry and low-resolution spectra the Type Ia supernova (SN Ia) 2003du was obtained using a number of facilities. The observations started 13 days before...
No supernovae detected in two long-duration Gamma-Ray Bursts (2007)
Watson, D., Fynbo, J. P. U., Thöne, C. C., Sollerman, J.
There is strong evidence that long duration gamma-ray bursts (GRBs) are produced during the collapse of a massive star. In the standard version of the Collapsar model, a broad-lined and luminous Type...
Gamma-ray burst host galaxies and the link to star-formation (2007)
Fynbo, J. P. U., Hjorth, J., Malesani, D., Sollerman, J., Watson, D., Jakobsson, P, ...
We briefly review the current status of the study of long-duration gamma-ray burst (GRB) host galaxies. GRB host galaxies are mainly interesting to study for two reasons: 1) they may help us...
Mattila, S., Vaisanen, P., Farrah, D., Efstathiou, A., Meikle, W. P. S., Dahlen, T., ...
We report a supernova discovery in Ks-band images from the NAOS CONICA adaptive optics (AO) system on the ESO Very Large Telescope (VLT). The images were obtained as part of a near-infrared search...
Watson, D., Hjorth, J., Fynbo, J. P. U., Jakobsson, P., Foley, S., Sollerman, J., ...
We compare the HI column densities from Ly-alpha absorption to the metal column densities from X-ray absorption in gamma-ray burst (GRB) afterglows. Eight bursts of seventeen entering the sample,...
The nature of the X-Ray Flash of August 24 2005 (2007)
Sollerman, J., Fynbo, J. P. U., Gorosabel, J., Halpern, J. P., Hjorth, J., Jakobsson, P., ...
We present comprehensive photometric R-band observations of the fading optical afterglow of the X-Ray Flash XRF050824, from 11 minutes to 104 days after the burst. The R-band lightcurve of the...
Davis, T. M., Mortsell, E., Sollerman, J., Becker, A. C., Blondin, S., Challis, P., ...
The first cosmological results from the ESSENCE supernova survey (Wood-Vasey et al. 2007) are extended to a wider range of cosmological models including dynamical dark energy and non-standard...
The nature of the dwarf starforming galaxy associated with GRB 060218 / SN2006aj (2007)
Wiersema, K., Savaglio, S., Vreeswijk, P. M., Ellison, S. L., Ledoux, C., ...
We present high resolution VLT UVES and low resolution FORS optical spectroscopy of supernova 2006aj and its host galaxy, associated with the nearby (z = 0.03342) gamma-ray burst GRB 060218. This...
Wood-Vasey, W. M., Miknaitis, G., Stubbs, C. W., Jha, S., Riess, A. G., Garnavich, P. M., ...
We present constraints on the dark energy equation-of-state parameter, w=P/(rho c^2), using 60 Type Ia supernovae (SNe Ia) from the ESSENCE supernova survey. We derive a set of constraints on the...
The ESSENCE Supernova Survey: Survey Optimization, Observations, and Supernova Photometry (2007)
Miknaitis, G., Pignata, G., Rest, A., Wood-Vasey, W. M., Blondin, S., Challis, P., ...
We describe the implementation and optimization of the ESSENCE supernova survey, which we have undertaken to measure the equation of state parameter of the dark energy. We present a method for...
SN 2003du: 480 days in the life of a normal type Ia supernova (2007)
Stanishev, V., Goobar, A., Benetti, S., Kotak, R., Pignata, G., Navasardyan, H., ...
The nature of the x-ray flash of August 24 2005. (2007)
Sollerman, J., Fynbo, J., Gorosabel, J., Halpern, J.P., Hjorth, J., Jakobsson, P., ...
The peculiar type Ia supernova 2005hk (2007)
Stanishev, V., Taubenberger, S., Blanc, G., Anupama, G. C., Benetti, S., Cappellaro, E., ...
Mattila, S., Vaisanen, P., Farrah, D., Efstathiou, A., Meikle, W. P. S., Dahlen, T., ...
Publicación ISI
Mattila, S., Vaisanen, P., Farrah, D., Efstathiou, A., Meikle, W. P. S., Dahlen, T., ...
Publicación ISI
Watson, D., Hjorth, J., Fynbo, J.P.U., Jakobsson, P., Foley, S., Sollerman, J., ...
Original article can be found at: http://www.iop.org/EJ/journal/apjl Copyright American Astronomical Society DOI: 10.1086/518310 [Full text of this article is not available in the UHRA]
The ESSENCE Supernova Survey: Survey optimization, observations, and supernova photometry (2007)
Miknaitis, G., Pignata, G., Rest, A., Wood‐Vasey, W. M., Blondin, S., Challis, P., ...
We describe the implementation and optimization of the ESSENCE supernova survey, which we have undertaken to measure the dark energy equation‐of‐state parameter, . We present a method for...
Miknaitis, G., Pignata, G., Rest, A., Wood-Vasey, W. M., Blondin, S., Challis, P., ...
The first cosmological results from the ESSENCE supernova survey (Wood‐Vasey and coworkers) are extended to a wider range of cosmological models including dynamical dark energy and nonstandard...
The ESSENCE Supernova Survey: Survey optimization, observations, and supernova photometry (2007)
Miknaitis, G., Pignata, G., Rest, A., Wood‐Vasey, W. M., Blondin, S., Challis, P., ...
We describe the implementation and optimization of the ESSENCE supernova survey, which we have undertaken to measure the dark energy equation‐of‐state parameter, . We present a method for...
Miknaitis, G., Pignata, G., Rest, A., Wood-Vasey, W. M., Blondin, S., Challis, P., ...
The first cosmological results from the ESSENCE supernova survey (Wood‐Vasey and coworkers) are extended to a wider range of cosmological models including dynamical dark energy and nonstandard...
Wood-Vasey, W. M., Miknaitis, G., Stubbs, C. W., Jha, S., Riess, A. G., Garnavich, P. M., ...
We present constraints on the dark energy equation-of-state parameter, w = P/(ρc2), using 60 SNe Ia from the ESSENCE supernova survey. We derive a set of constraints on the nature of the dark energy...
HI column densities of z > 2 Swift gamma-ray bursts (2006)
Jakobsson, P., Fynbo, J. P. U., Ledoux, C., Vreeswijk, P., Kann, D. A., Hjorth, J., ...
Context. Before the launch of the Swift satellite, the majority of the gamma-ray burst (GRB) afterglows for which Lya was redshifted into the observable spectrum showed evidence for a damped Lya...
The Peculiar Type Ia Supernova 2005hk (2006)
Stanishev, V., Taubenberger, S., Blanc, G., Anupama, G. C., Benetti, S., Cappellaro, E., ...
We present a preliminary analysis of an extensive set of optical observations of the Type Ia SN 2005hk. We show that the evolution of SN 2005hk closely follows that of the peculiar SN 2002cx. SN...
A Spitzer Space Telescope study of Sn 2002hh: An infrared echo from a Type IIP supernova (2006)
Meikle, W. P. S., Mattila, S., Gerardy, C. L., Kotak, R., Pozzo, M., Van Dyk, S. D., ...
We present late-time (590-994 days) mid-IR photometry of the normal but highly reddened Type IIP supernova SN 2002hh. Bright, cool, slowly fading emission is detected from the direction of the...
HI column densities of z > 2 Swift gamma-ray bursts (2006)
Jakobsson, P., Fynbo, J. P. U., Ledoux, C., Vreeswijk, P., Kann, D. A., Hjorth, J., ...
Context: Before the launch of the Swift satellite, the majority of the gamma-ray burst (GRB) afterglows for which Ly-alpha was redshifted into the observable spectrum showed evidence for a damped...
An optical supernova associated with the X-ray flash XRF 060218 (2006)
Pian, E., Mazzali, P. A., Masetti, N., Ferrero, P., Klose, S., Palazzi, E., ...
Long-duration gamma-ray bursts (GRBs) are associated with type Ic supernovae(1) that are more luminous than average(2-5) and that eject material at very high velocities. Less-luminous supernovae were...
Optical and near infrared observations of SN 1998bu (2006)
Spyromilio, J., Gilmozzi, R., Sollerman, J., Leibundgut, L., Fransson, C.
Infrared and optical spectra of SN 1998bu at an age of one year after explosion are presented. The data show evidence for the radioactive decay of 56Co to 56Fe, long assumed to be the powering source...
Probing cosmic chemical evolution with gamma-ray bursts: GRB 060206 at z=4.048 (2006)
Fynbo, J. P. U., Starling, R. L. C., Ledoux, C., Wiersema, K., Thöne, C. C., Sollerman, J., ...
Aims. We present early optical spectroscopy of the afterglow of the gamma-ray burst GRB060206 with the aim of determining the metallicity of the GRB absorber and the physical conditions in the...
A Spitzer Space Telescope study of SN 2002hh: an infrared echo from a Type IIP supernova (2006)
Meikle, W. P. S., Mattila, S., Gerardy, C. L., Kotak, R., Pozzo, M., Van Dyk, S. D., ...
We present late-time (590-994 d) mid-IR photometry of the normal, but highly-reddened Type IIP supernova SN 2002hh. Bright, cool, slowly-fading emission is detected from the direction of the...
The GRB 060218/SN 2006aj event in the context of other Gamma-Ray Burst Supernovae (2006)
Ferrero, P., Kann, D. A., Zeh, A., Klose, S., Pian, E., Palazzi, E., ...
The supernova SN 2006aj associated with GRB 060218 is the second-closest GRB-SN observed to date (z=0.033). We present Very Large Telescope, Liverpool Telescope, and Katzman Automatic Imaging...
Are short gamma-ray bursts collimated? GRB050709, a flare but no break (2006)
Watson, D., Hjorth, J., Jakobsson, P., Xu, D., Fynbo, J. P. U., Sollerman, J., ...
From the small sample of afterglow lightcurves of short duration gamma-ray bursts (GRBs), the decays are rapid, roughly following a power-law in time. It has been assumed that the afterglow emission...
Supernova 2006aj and the associated X-Ray Flash 060218 (2006)
Sollerman, J., Jaunsen, A. O., Fynbo, J. P. U., Hjorth, J., Jakobsson, P., Stritzinger, M., ...
We have studied the afterglow of the gamma-ray burst (GRB) of February 18, 2006. This is a nearby long GRB, with a very low peak energy, and is therefore classified as an X-ray Flash (XRF). XRF...
An optical supernova associated with the X-ray flash XRF 060218 (2006)
Pian, E., Mazzali, P. A., Masetti, N., Ferrero, P., Klose, S., Palazzi, E., ...
Long-duration gamma-ray bursts (GRBs) are associated with type Ic supernovae that are more luminous than average and that eject material at very high velocities. Less-luminous supernovae were not...
A Mean Redshift of 2.8 for Swift gamma - ray bursts (2006)
Jakobsson, P., Levan, A., Fynbo, J., Priddey, R., Hjorth, J., Tanvir, N., ...
Probing Cosmic Chemical Evolution with Gamma-Ray Bursts: GRB060206 at z=4.048 (2006)
Fynbo, J. P. U., Starling, R. L. C., Ledoux, C., Wiersema, K., Thöne, C. C., Sollerman, J., ...
Aim: We present early optical spectroscopy of the afterglow of the gamma-ray burst GRB 060206 with the aim of determining the metallicity of the GRB absorber and the physical conditions in the...
Optical and infrared observations of the Type IIP SN2002hh from day 3 to 397 (2006)
Pozzo, M., Meikle, W. P. S., Rayner, J. T., Joseph, R. D., Filippenko, A. V., Foley, R. J., ...
We present optical and infrared (IR) observations of the type IIP SN2002hh from 3 to 397 days after explosion. The optical spectroscopic (4-397d) and photometric (3-278d) data are complemented by...
GRB 050814 at z = 5.3 and the Redshift Distribution of Swift GRBs (2006)
Jakobsson, P., Levan, A., Fynbo, J. P. U., Priddey, R., Hjorth, J., Tanvir, N., ...
We report optical, near-infrared and X-ray observations of the afterglow of GRB 050814, which was seen to exhibit very red optical colours. By modelling its spectral energy distribution we find that...
Probing cosmic chemical evolution with gamma-ray bursts: GRB 060206 at z=4.048 (2006)
Fynbo, J.P.U., Starling, R.L.C., Ledoux, C., Wiersema, K., Thone, C.C., Sollerman, J., ...
An optical supernova associated with the X-ray flash XRF 060218 (2006)
Pian, E., Mazzali, P. A., Masetti, N., Ferrero, P., Klose, S., Palazzi, E., ...
The GRB 060218/SN 2006aj event in the context of other gamma-ray burst supernovae (2006)
Ferrero, P., Kann, D. A., Zeh, A., Klose, S., Pian, E., Palazzi, E., ...
The GRB 060218/SN 2006aj event in the context of other gamma-ray burst supernovae (2006)
Ferrero, P., Kann, D. A., Zeh, A., Klose, S., Pian, E., Palazzi, E., ...
Watson, D., Fynbo, J.P.U., Ledoux, C., Vreeswijk, P., Hjorth, J., Smette, A., ...
The optical afterglow spectrum of GRB 050401 (at z=2.8992+/-0.0004) shows the presence of a damped Lyalpha absorber (DLA), with logNHI=22.6+/-0.3. This is the highest column density ever observed in...
The Short Gamma-Ray Burst Revolution (2006)
Hjorth, J., Levan, A., Tanvir, N., Starling, R., Klose, S., Kouveliotou, C., ...
Not Available
The GRB 060218/SN 2006aj event in the context of other gamma-ray burst supernovae. (2006)
Ferrero, P., Kann, D.A., Zeh, A., Klose, S., Pian, E., Palazzi, E., ...
Probing cosmic chemical evolution with gamma-ray bursts: GRB 060206 at z = 4.048. (2006)
Fynbo, J., Starling, R.L., Ledoux, C., Wiersema, K., Thoene, C.C., Sollerman, J., ...
No supernovae associated with two long-duration gamma ray bursts. (2006)
Fynbo, J.P.U., Watson, D., Thoene, C.C., Sollerman, J., Bloom, J.S., Davis, T., ...
The Short Gamma-Ray Burst Revolution. (2006)
Hjorth, J., Levan, A., Tanvir, N., Starling, R.L., Klose, S., Kouveliotou, C., ...
Are short y-ray bursts collimated GRB 050709, a flare but no break. (2006)
Watson, D., Hjorth, J., Jakobsson, P., Xu, D., Fynbo, J.P.U., Sollerman, J., ...
Supernova 2006aj and the associated X-Ray Flash 060218. (2006)
Sollerman, J., Jaunsen, A.O., Fynbo, J.P.U., Hjorth, J., Jakobsson, P., Stritzinger, I.M., ...
An optical supernova associated with the X-ray flash XRF 060218 (2006)
Pian, E., Mazzali, P.A., Masetti, N., Ferrero, P., Klose, S., Palazzi, E., ...
Long-duration gamma-ray bursts (GRBs) are associated with type Ic supernovae that are more luminous than average and that eject material at very high velocities. Less-luminous supernovae were not...
The Short Gamma-Ray Burst Revolution (2006)
Hjorth, J., Levan, A.J., Tanvir, N., Starling, R., Klose, S., Kouveliotou, C., ...
Swift, a dedicated gamma-ray burst (GRB) satellite with ultrarapid slewing capability, and a suite of ground-based (ESO) telescopes have recently achieved a major breakthrough: detecting the first...
Supernova 2006aj and the associated X-Ray Flash 060218 (2006)
Sollerman, J., Jaunsen, A., Fynbo, J., Hjorth, J., Jakobsson, P., Stritzinger, M., ...
We have studied the afterglow of the gamma-ray burst (GRB) of February 18, 2006. This is a nearby long GRB, with a very low peak energy, and is therefore classified as an X-ray Flash (XRF)....
The galaxies in the field of the nearby GRB980425/SN1998bw (2005)
Foley, S., Watson, D., Gorosabel, J., Fynbo, J. P. U., Sollerman, J., McGlynn, S., ...
We present spectroscopic observations of ESO 184-G82, the host galaxy of GRB980425/SN1998bw, and six galaxies in its field. A host redshift of z=0.0087+/-0.0006 is derived, consistent with that...
A log N(HI) = 22.6 DLA in a dark gamma-ray burst: the environment of GRB 050401 (2005)
Watson, D., Fynbo, J. P. U., Ledoux, C., Vreeswijk, P., Hjorth, J., Smette, A., ...
The optical afterglow spectrum of GRB050401 (at z=2.8992+/-0.0004) shows the presence of a DLA, with log(nHI)=22.6+/-0.3. This is the highest column density ever observed in a DLA, and is about five...
Using Line Profiles to Test the Fraternity of Type Ia Supernovae at High and Low Redshifts (2005)
Blondin, S., Dessart, L., Leibundgut, B., Branch, D., Hoeflich, P., Tonry, J. L., ...
Using archival data of low-redshift (z < 0.01) Type Ia supernovae (SN Ia) and recent observations of high-redshift (0.16 < z 1.7] SN Ia, which are also subluminous. In addition, we give the first...
The host galaxy cluster of the short gamma-ray burst GRB 050509B (2005)
Pedersen, K., Eliasdottir, A., Hjorth, J., Starling, R., Cerón, J. M. Castro, Fynbo, J. P. U., ...
The first arcsecond localization of a short gamma-ray burst, GRB 050509B, has enabled detailed studies of a short burst environment. We here report on studies of the environment of GRB 050509B using...
A short gamma-ray burst apparently associated with an elliptical galaxy at redshift z = 0.225 (2005)
Sarazin, C L, O'Brien, P T, Zhang, B, Barthelmy, S D, ...
Gamma-ray bursts (GRBs) come in two classes: long (> 2 s), soft-spectrum bursts and short, hard events. Most progress has been made on understanding the long GRBs, which are typically observed at...
A mean redshift of 2.8 for Swift gamma-ray bursts (2005)
Jakobsson, P., Levan, A., Fynbo, J. P. U., Priddey, R., Hjorth, J., Tanvir, N., ...
The exceptionally high luminosities of gamma-ray bursts (GRBs), gradually emerging as extremely useful probes of star formation, make them promising tools for exploration of the high-redshift...
Watson, D., Reeves, J. N., Hjorth, J., Fynbo, J. P. U., Jakobsson, P., Pedersen, K., ...
Gamma-ray burst (GRB) 050904 is the most distant X-ray source known, at z=6.295, comparable to the farthest AGN and galaxies. Its X-ray flux decays, but not as a power-law; it is dominated by large...
GRB 050509B: Constraints on Short Gamma Ray Burst Models (2005)
Hjorth, J., Sollerman, J., Gorosabel, J., Granot, J., Klose, S., Kouveliotou, C., ...
Hubble Space Telescope Observations of Nine High-Redshift ESSENCE Supernovae (2005)
Krisciunas, Kevin, Garnavich, Peter M., Challis, Peter, Prieto, Jose Luis, Riess, A. G., Barris, B., ...
We present broad-band light curves of nine supernovae ranging in redshift from 0.5 to 0.8. The supernovae were discovered as part of the ESSENCE project, and the light curves are a combination of...
Spectro-photometric study of the GRB 030329 host galaxy (2005)
Gorosabel, J., Perez-Ramirez, D., Sollerman, J., Postigo, A. De Ugarte, Fynbo, J. P. U., Castro-Tirado, A. J., ...
In this study optical/near-infrared(NIR) broad band photometry and optical spectroscopic observations of the GRB 030329 host galaxy are presented. The Spectral Energy Distribution (SED) of the host...
High-Velocity Features: A Ubiquitous Property of Type Ia Supernovae (2005)
A. Mazzali, P., Benetti, S., Altavilla, G., Blanc, G., Cappellaro, E., Elias-Rosa, N., ...
Evidence of high-velocity features (HVFs) such as those seen in the near-maximum spectra of some Type Ia supernovae (SNe Ia; e.g., SN 2000cx) has been searched for in the available SN Ia spectra...
The GRB 030329 host: a blue low metallicity subluminous galaxy with intense star formation (2005)
Gorosabel, J., Pérez-Ramírez, D., Sollerman, J., Postigo, A. De Ugarte, Fynbo, J. P. U., Castro-Tirado, A. J., ...
We present broad band photometry and spectroscopic observations of the host galaxy of GRB 030329. Analysis of the spectral emission lines shows that the host is likely a low metallicity galaxy...
On the nature of nearby GRB/SN host galaxies (2005)
Sollerman, J., Ostlin, G., Fynbo, J. P. U., Hjorth, J., Fruchter, A., Pedersen, K.
We present and discuss optical diagnostics of the low redshift (z
GRB 050509B: Constraints on short gamma-ray burst models (2005)
Hjorth, J., Sollerman, J., Gorosabel, J., Granot, J., Klose, S., Kouveliotou, C., ...
We have obtained deep optical images with the Very Large Telescope at ESO of the first well-localized short-duration gamma-ray burst, GRB 050509B. From V and R imaging, initiated ~2 days after the...
On the future of Gamma-Ray Burst Cosmology (2005)
With the understanding that the enigmatic Gamma-Ray Burts (GRBs) are beamed explosions, and with the recently discovered ``Ghirlanda-relation'', the dream of using GRBs as cosmological yardsticks may...
SN 1998A: Explosion of a Blue Supergiant (2005)
Pastorello, A., Baron, E., Branch, D., Zampieri, L., Turatto, M., Ramina, M., ...
We present spectroscopic and photometric observations of the peculiar Type II supernova (SN) 1998A. The light curves and spectra closely resemble those of SN 1987A, suggesting that the SN 1998A...
High-Velocity Features: a ubiquitous property of Type Ia SNe (2005)
Mazzali, P. A., Benetti, S., Altavilla, G., Blanc, G., Cappellaro, E., Elias-Rosa, N., ...
Evidence of high-velocity features such as those seen in the near-maximum spectra of some Type Ia Supernovae (eg SN 2000cx) has been searched for in the available SNIa spectra observed earlier than...
Optical observations of the young supernova remnant SNR 0540-69.3 and its pulsar (2005)
Serafimovich, N. I., Lundqvist, P., Shibanov, Yu. A., Sollerman, J.
We have used the ESO NTT/EMMI and VLT/FORS1 instruments to examine the LMC supernova remnant 0540-69.3 as well as its pulsar (PSR B0540-69) and pulsar-powered nebula in the optical...
Mattila, S., Lundqvist, P., Sollerman, J., Kozma, C., Baron, E., Fransson, C., ...
We present early time high-resolution (VLT/UVES) and late time low-resolution (VLT/FORS) optical spectra of the normal type Ia supernova, SN 2001el. The high-resolution spectra were obtained at -9...
High-Velocity Features: A Ubiquitous Property of Type Ia Supernovae (2005)
A. Mazzali, P., Benetti, S., Altavilla, G., Blanc, G., Cappellaro, E., Elias-Rosa, N., ...
Evidence of high-velocity features (HVFs) such as those seen in the near-maximum spectra of some Type Ia supernovae (SNe Ia; e.g., SN 2000cx) has been searched for in the available SN Ia spectra...
High-Velocity Features: A Ubiquitous Property of Type Ia Supernovae (2005)
A. Mazzali, P., Benetti, S., Altavilla, G., Blanc, G., Cappellaro, E., Elias-Rosa, N., ...
Evidence of high-velocity features (HVFs) such as those seen in the near-maximum spectra of some Type Ia supernovae (SNe Ia; e.g., SN 2000cx) has been searched for in the available SN Ia spectra...
Diffuse Interstellar Bands in NGC 1448 (2005)
Sollerman, J., Cox, N.L.J., Mattila, S., Ehrenfreund, P., Kaper, L., Leibundgut, B., ...
High-velocity features: a ubiquitous property of type Ia supernovae (2005)
Mazzali, P. A., Benetti, S., Altavilla, G., Blanc, G., Cappellaro, E., Elias-Rosa, N., ...
SN 1998A: explosion of a blue supergiant (2005)
Pastorello, A., Baron, E., Branch, D., Zampieri, L., Turatto, M., Ramina, M., ...
Three-dimensional modeling of type Ia supernovae - The power of late time spectra (2005)
Kozma, C., Fransson, C., Hillebrandt, W., Travaglio, C., Sollerman, J., Reinecke, M., ...
Diffuse Interstellar Bands in NGC 1448 (2005)
Sollerman, J., Cox, N.L.J., Mattila, S., Ehrenfreund, P., Kaper, L., Leibundgut, B., ...
A short gamma-ray burst apparently associated with an elliptical galaxy at redshift 0.225 (2005)
Gehrels, Neil, Sarazin, C.L., O'Brien, Paul T., Zhang, B., Barbier, L., Barthelmy, Scott D., ...
GRB050509B: optical observations at the very large telescope. (2005)
Hjorth, J., Sollerman, J., Jensen, B.L., Fynbo, J.P.U., Jakobsson, P., Ceron, J.M. Castro, ...
Not Available
The Host Galaxy Cluster of the Short Gamma-Ray Burst GRB 050509B (2005)
Pedersen, K., ElÃasdóttir, Ã., Hjorth, J., Starling, R.L.C., Cerón, J.M.C., Fynbo, J.P.U., ...
The first arcsecond localization of a short gamma-ray burst, GRB 050509B, has enabled detailed studies of a short-burst environment. We here report on studies of the environment of GRB 050509B using...
GRB 050509B: Constraints on Short Gamma-Ray Burst Models (2005)
Hjort, J., Sollerman, J., Gorosabel, J., Granot, J., Klose, S., Kouveliotou, C., ...
A short gamma-ray burst apparently associated with an elliptical galaxy at redshift z = 0.225 (2005)
Gehrels, N., Sarazin, C.L., O'Brien, P.T., Zhang, B., Barbier, L., Barthelmy, S.D., ...
Gamma-ray bursts (GRBs) come in two classes: long (> 2s), soft-spectrum bursts and short, hard events. Most progress has been made on understanding the long GRBs, which are typically observed at high...
GRB050802: tentative absorption redshift. (2005)
Fynbo, J.P.U., Sollerman, J., Jensen, B.L., Hjorth, J., Watson, D., Ceron, J.M. Castro, ...
Not Available
The GRB 030329 host: a blue low metallicity subluminous galaxy with intense star formation. (2005)
Gorosabel, J., Perez-Ramirez, D., Sollerman, J., Fynbo, J.P.U., Castro-Tirado, A.J., ...
Spectro-photometric study of the GRB 030329 host galaxy. (2005)
Gorosabel, J., Perez-Ramirez, D., Sollerman, J., Fynbo, J.P.U., Castro-Tirado, A.J., ...
Spectroscopy of High-Redshift Supernovae from the ESSENCE Project: The First Two Years (2004)
Matheson, T., Blondin, S., Foley, R. J., Chornock, R., Filippenko, A. V., Leibundgut, B., ...
We present the results of spectroscopic observations of targets discovered during the first two years of the ESSENCE project. The goal of ESSENCE is to use a sample of ~200 Type Ia supernovae (SNe...
Jakobsson, P., Hjorth, J., Fynbo, J. P. U., Weidinger, M., Gorosabel, J., Ledoux, C., ...
We report the discovery of the optical afterglow (OA) of the long-duration gamma-ray burst GRB 030429, and present a comprehensive optical/near-infrared dataset used to probe the matter at different...
The young pulsar PSR B0540-69.3 and its synchrotron nebula in the optical and X-rays (2004)
Serafimovich, N. I., Shibanov, Yu. A., Lundqvist, P., Sollerman, J.
The young PSR B0540-69 (B0540) in the LMC is the only pulsar (except the Crab pulsar) for which a near-UV spectrum has been obtained. However, the absolute flux and spectral index of previously...
Optical and near infrared observations of SN 1998bu (2004)
Spyromilio, J., Gilmozzi, R., Sollerman, J., Leibundgut, L., Fransson, C.
Infrared and optical spectra of SN 1998bu at an age of one year after explosion are presented. The data show evidence for the radioactive decay of 56Co to 56Fe, long assumed to be the powering source...
On the source of the late-time infrared luminosity of SN 1998S and other type II supernovae (2004)
Pozzo, M., Meikle, W. P. S., Fassia, A., Geballe, T., Lundqvist, P., Chugai, N. N., ...
We present late-time near-infrared (NIR) and optical observations of the type IIn SN 1998S. The NIR photometry spans 333-1242 days after explosion, while the NIR and optical spectra cover 333-1191...
Fynbo, J. P. U., Sollerman, J., Hjorth, J., Grundahl, F., Gorosabel, J., Weidinger, M., ...
We present optical and near-infrared follow-up observations of the X-Ray Flash (XRF) of July 23 2003. Our observations in the R-band cover the temporal range from 4.2 h to 64 days after the high...
The GRB-SN connection: GRB030329 and XRF030723 (2004)
Fynbo, J. P. U., Hjorth, J., Sollerman, J., Moller, P., Gorosabel, J., Guziy, S., ...
The attempt to secure conclusive, spectroscopic evidence for the GRB/SN connection has been a central theme in most GRB observing time proposals since the discovery of the very unusual GRB980425...
Diffuse Interstellar Bands in NGC 1448 (Sollerman+, 2005) (2004)
Sollerman, J., Cox, N., Mattila, S., Ehrenfreund, P., Kaper, L., Leibundgut, B., ...
table3 lists the VPFIT parameters (velocity v, Doppler parameter b and column density N) for the components of the observed atomic interstellar lines of Ca II, Ti II, Na I and K I towards SN 2001el...
Jakobsson, P., Hjorth, J., Fynbo, J.P.U., Weidinger, M., Gorosabel, J., Ledoux, C., ...
We report the discovery of the optical afterglow (OA) of the long-duration gamma-ray burst GRB 030429, and present a comprehensive optical/near-infrared dataset used to probe the matter at different...
Frynbo, J.P.U., Sollerman, J., Hjorth, J., Grundahl, F., Gorosabel, J., Weidinger, M., ...
We present optical and near-infrared follow-up observations of the X-ray flash (XRF) of 2003 July 23. Our observations in the R band cover the temporal range from 4.2 hr to 64 days after the...
Optical and near infrared observations of SN 1998bu (2004)
Spyromilio, J., Gilmozzi, R., Sollerman, J., Leibundgut, L., Fransson, C.
Infrared and optical spectra of SN 1998bu at an age of one year after explosion are presented. The data show evidence for the radioactive decay of 56Co to 56Fe, long assumed to be the powering source...
Optical and near infrared observations of SN 1998bu (2004)
Spyromilio, J., Gilmozzi, R., Sollerman, J., Leibundgut, L., Fransson, C.
Infrared and optical spectra of SN 1998bu at an age of one year after explosion are presented. The data show evidence for the radioactive decay of 56Co to 56Fe, long assumed to be the powering source...
The Vela Pulsar in the Near-Infrared (2003)
Shibanov, Y. A., Koptsevich, A. B., Sollerman, J., Lundqvist, P.
We report on the first detection of the Vela pulsar in the near-infrared with the VLT/ISAAC in the Js and H bands. The pulsar magnitudes are Js=22.71 +/- 0.10 and H=22.04 +/- 0.16. We compare our...
A very energetic supernova associated with the gamma-ray burst of 29 March 2003 (2003)
Hjorth, J., Sollerman, J., Moller, P., Fynbo, J.U., Woosley, S., Kouveliotou, C., ...
Over the past five years evidence has mounted that long-duration (>2s) gamma-ray bursts (GRBs)-the most luminous of all astronomical explosions-signal the collapse of massive stars in our Universe....
A very energetic supernova associated with the -ray burst of 29 March 2003. (2003)
Hjorth, J., Sollerman, J., Moller, P., Fynbo, J.P.U., Woosley, S.E., Kouveliotou, C., ...
Deep BVR Imaging of the Field of the Millisecond Pulsar PSR J0030+0451 with the VLT (2002)
Koptsevich, A. B., Lundqvist, P., Serafimovich, N. I., Shibanov, Yu. A., Sollerman, J.
We report on deep BVR-imaging of the field of the nearby millisecond pulsar PSR J0030+0451 obtained with the ESO/VLT/FORS2. We do not detect any optical counterpart down to B>27.3, V>27.0 and R>27.0...
Supernova 1998bw - The final phases (2002)
Sollerman, J., Holland, S. T., Challis, P., Fransson, C., Garnavich, P., Kirshner, R. P., ...
The probable association with GRB 980425 immediately put SN 1998bw at the forefront of supernova research. Here, we present revised late-time BVRI light curves of the supernova, based on template...
Lundqvist, P., Kozma, C., Sollerman, J., Fransson, C.
ISO/SWS observations of SN 1987A on day 3425 show no emission in [Fe I] 24.05 microns and [Fe II] 25.99 microns down to the limits of roughly 0.39 Jy and 0.64 Jy, respectively. Assuming a homogeneous...
The Metamorphosis of SN 1998bw (2001)
Patat, F., Cappellaro, E., Danziger, I.J., Mazzali, P., Sollerman, J., Augusteijn, T., ...
Pulsar optical observation with the Very Large Telescope (2000)
Ray, A., Lundqvist, P., Sollerman, J., Leibundgut, B., Sutaria, F.
Optical data in the V-band gathered with the 8.2m ESO Very Large Telescope (VLT) at the radio interferometric position of PSR 1706-44 are presented. The pulsar is close to a bright star in projection...
ISO SWS/LWS observations of SN 1987A (1999)
Lundqvist, P., Sollerman, J., Kozma, C., Larsson, B., Spyromilio, J., Crotts, A. P. S., ...
We report on observations of SN 1987A with ISO SWS/LWS made 9 - 11 years after the explosion. No emission from the supernova was seen. In particular, the upper limits on the fluxes of [Fe I] 24.05...
The Peculiar Type II Supernova 1997 D: A Case for a Very Low 56Ni Mass (1998)
Turatto, M., Mazzali, P. A., Young, T. R., Nomoto, K., Iwamoto, K., Benetti, S., ...
SN 1997D in NGC 1536 is possibly the least luminous and energetic Type II supernova discovered to date. The entire light curve is subluminous, never reaching $M_V = -14.65$. The radioactive tail...