A 15 deg Wide Field of View Imaging Air Cherenkov Telescope (2008)
Contemporary imaging air Cherenkov telescopes (IACT) for ground-based very high energy (VHE) gamma ray astronomy have prime focus optical design. Typically these telescopes have a 2-4 deg wide field...
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,...
Telescope and instrument robotization at Dome C (2007)
Strassmeier, K. G., Agabi, K., Agnoletto, L., Allan, A., Andersen, M. I., Ansorge, W., ...
This article reviews the situation for robotization of telescopes and instruments at the Antarctic station Concordia on Dome C. A brain-storming meeting was held in Tenerife in March 2007 from which...
Vreeswijk, P. M., Ledoux, C., Smette, A., Ellison, S. L., Jaunsen, A. O., Andersen, M. I., ...
Publicación ISI
Vreeswijk, P. M., Ledoux, C., Smette, A., Ellison, S. L., Jaunsen, A. O., Andersen, M. I., ...
Publicación ISI
Vreeswijk, P. M., Ledoux, C., Smette, A., Ellison, S. L., Jaunsen, A., Andersen, M. I., ...
We present high-resolution spectroscopic observations of GRB060418, obtained with VLT/UVES. These observations were triggered using the VLT Rapid-Response Mode (RRM), which allows for automated...
EMIR: Using GRBs to probe the high redshift Universe (2006)
N. Lund, S. Martínez Núñez, M. I. Andersen, J. Fynbo, J. Hjorth, S. Brandt, ...
EMIR: Using GRBs to probe the high redshift Universe
Physics of the GRB 030328 afterglow and its environment (2006)
Maiorano, E., Masetti, N., Palazzi, E., Savaglio, S., Rol, E., Vreeswijk, P. M., ...
We report on the photometric, spectroscopic and polarimetric, monitoring of the optical afterglow of Gamma-Ray Burst (GRB) 030328 detected by HETE-2. Photometry, collected at 7 different telescopes,...
The broadband afterglow of GRB 030328 (2006)
Maiorano, E., Masetti, N., Palazzi, E., Savaglio, S., Rol, E., Pian, E., ...
We here report on the photometric, spectroscopic and polarimetric monitoring of the optical afterglow of the Gamma-Ray Burst (GRB) 030328 detected by HETE-2. We found that a smoothly broken power-law...
Multiwavelength studies of the optically dark gamma-ray burst 001025A (2006)
Pedersen, K., Hurley, K., Hjorth, J., Smith, D. A., Andersen, M. I., Christensen, L., ...
Reddening distribution across the center of the globular cluster Omega Centauri (2005)
Calamida, A., Stetson, P. B., Bono, G., Freyhammer, L. M., Grundahl, F., Hilker, M., ...
We present new medium-band uvby Stromgren and broad-band VI photometry for the central regions of the globular cluster Omega Cen. From this photometry we have obtained differential reddening...
Multi-Wavelength Studies of the Optically Dark Gamma-Ray Burst 001025A (2005)
Pedersen, K., Hurley, K., Hjorth, J., Smith, D. A., Andersen, M. I., Christensen, L., ...
We identify the fading X-ray afterglow of GRB 001025A from XMM-Newton observations obtained 1.9-2.3 days, 2 years, and 2.5 years after the burst. The non-detection of an optical counterpart to an...
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...
Masetti, N., Palazzi, E., Pian, E., Hunt, L., Fynbo, J. P. U., Gorosabel, J., ...
We present the results of an optical and near-infrared (NIR) monitoring campaign of the counterpart of Gamma-Ray Burst (GRB) 000911, located at redshift z=1.06, from 5 days to more than 13 months...
On the anomalous red giant branch of the globular cluster Omega Cen (2005)
Freyhammer, L. M., Monelli, M., Bono, G., Cunti, P., Ferraro, I., Calamida, A., ...
We present three different optical and near-infrared (NIR) data sets for evolved stars in the Galactic Globular Cluster Omega Cen The comparison between observations and homogeneous sets of stellar...
GRB 050509B: Constraints on Short Gamma-Ray Burst Models (2005)
Hjort, J., Sollerman, J., Gorosabel, J., Granot, J., Klose, S., Kouveliotou, C., ...
GRB 040403: a faint X-ray rich Gamma-ray Burst discovered by INTEGRAL (2004)
Mereghetti, S., Gotz, D., Andersen, M. I., Castro-Tirado, A., Frontera, F., Gorosabel, J., ...
GRB 040403 is one of the faintest gamma-ray bursts for which a rapid and accurate localization has been obtained. Here we report on the gamma-ray properties of this burst, based on observations with...
Cerón, J. M. Castro, Gorosabel, J., Castro-Tirado, A. J., Sokolov, V. V., Afanasiev, V. L., Fatkhullin, T. A., ...
We present optical and NIR (near infrared) follow up observations of the GRB 001109 from 1 to 300 days after the burst. No transient emission was found at these wavelengths within this GRB's (Gamma...
The supernova 2003lw associated with X-ray flash 031203 (2004)
Thomsen, B., Hjorth, J., Watson, D., Gorosabel, J., Fynbo, J. P. U., Jensen, B. L., ...
The X-Ray Flash (XRF), 031203 with a host galaxy at z=0.1055, is, apart from GRB980425, the closest Gamma-Ray Burst (GRB) or XRF known to date. We monitored its host galaxy from 1-100 days after the...
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...
Small-scale variations in the radiating surface of the GRB 011211 jet (2004)
Jakobsson, P., Hjorth, J., Ramirez-Ruiz, E., Kouveliotou, C., Pedersen, K., Fynbo, J. P. U., ...
We report the discovery of the afterglow of the X-ray rich, long-duration gamma-ray burst GRB 011211 and present evidence for oscillatory behaviour in its early optical light curve. The time-scale of...
X-shooter: UV-to-IR intermediate-resolution high-efficiency spectrograph for the ESO VLT (2004)
D'Odorico, S., Andersen, M.I., Conconi, P., Caprio, V. De, Delabre, B., Marcantonio, P. Di, ...
X-shooter is a single target spectrograph for the Cassegrain focus of one of the VLT UTs. It covers in a single exposure the spectral range from the UV to the H band with a possible extension into...
GRB 011121: Jet, wind and supernova – all in one (2004)
Greiner, J., Klose, S., Salvato, M., Zeh, A., Schwarz, R., Hartmann, D. H., ...
The optical/near-IR spectral energy distribution of the GRB 000210 host galaxy (2004)
Gorosabel, J., Christensen, L., Hjorth, J., Fynbo, J. U., Pedersen, H., Jensen, B. L., ...
Castro Cerón, J. M., Gorosabel, J., Castro-Tirado, A. J., Sokolov, V. V., Afanasiev, V. L., Fatkhullin, T. A., ...
The supernova 2003lw associated with X-ray flash 031203. (2004)
Thomsen, B., Hjorth, J., Watson, D., Gorosabel, J., Fynbo, J.P.U., Jensen, B.L., ...
Small-scale variations in the radiating surface of the GRB 011211 jet. (2004)
Jakobsson, P., Hjorth, J., Ramirez-Ruiz, E., Kouveliotou, C., Pedersen, K., Fynbo, J.P.U., ...
GRB 030227: the first multiwavelength afterglow of an INTEGRAL GRB (2003)
Castro-Tirado, A. J., Gorosabel, J., Guziy, S., Reverte, D., Cerón, J. M. Castro, Postigo, A. De Ugarte, ...
We present multiwavelength observations of a gamma-ray burst detected by INTEGRAL (GRB 030227) between 5.3 hours and ~1.7 days after the event. Here we report the discovery of a dim optical afterglow...
GRB 011121: A collimated outflow into wind-blown surroundings (2003)
Greiner, J., Klose, S., Salvato, M., Zeh, A., Schwarz, R., Hartmann, D. H., ...
We discover a break in the GRB 011121 afterglow light curve after 1.3 days, which implies an initial jet opening angle of about 9 deg. The SED during the first four days is achromatic, and supports...
Very high column density and small reddening towards GRB 020124 at z = 3.20 (2003)
Hjorth, J., Møller, P., Gorosabel, J., Fynbo, J. P. U., Toft, S., Jaunsen, A. O., ...
We present optical and near-infrared observations of the dim afterglow of GRB 020124, obtained between 2 and 68 hours after the gamma-ray burst. The burst occurred in a very faint (R > 29.5) Damped...
The afterglow and the host galaxy of GRB 011211 (2003)
Jakobsson, P., Hjorth, J., Fynbo, J. P. U., Gorosabel, J., Pedersen, K., Burud, I., ...
We present optical, near-infrared, and X-ray observations of the optical afterglow (OA) of the X-ray rich, long-duration gamma-ray burst GRB 011211. Hubble Space Telescope (HST) data obtained 14, 26,...
The optical/near-IR spectral energy distribution of the GRB 000210 host galaxy (2003)
Gorosabel, J., Christensen, L., Hjorth, J., Fynbo, J. U., Pedersen, H., Jensen, B. L., ...
We report on UBVRIZJsHKs-band photometry of the dark GRB 000210 host galaxy. Fitting a grid of spectral templates to its Spectral Energy Distribution (SED), we derived a photometric redshift...
Ly-alpha emission from GRB host galaxies (2003)
Fynbo, J. P. U., Moller, P., Thomsen, B., Hjorth, J., Gorosabel, J., Andersen, M. I., ...
Ly-alpha emission is indicative of on-going star formation in a dust-poor environment. Ly-alpha imaging is therefore a probe of the star formation rate and of the dust-content of Gamma-Ray Burst host...
GRB 030227 : The first multiwavelength afterglow of an INTEGRAL GRB (2003)
Castro-Tirado, A. J., Gorosabel, J., Guziy, S., Reverte, D., Castro Cerón, J. M., ...
We present multiwavelength observations of a gamma-ray burst detected byINTEGRAL (GRB 030227) between 5.3 hours and ~ 1.7days after the event. Here we report the discovery of a dim opticalafterglow...
GRB 011121: A Collimated Outflow into Wind-blown Surroundings (2003)
Greiner, J., Klose, S., Salvato, M., Zeh, A., Schwarz, R., Hartmann, D.H., ...
XRF 030723: detection of a rebrightening in the optical afterglow (2003)
Fynbo, J.U., Hjorth, J., Gorosabel, J., Jensen, B.L., Andersen, M.I., ...
On the Lyalpha emission from gamma-ray burst host galaxies: Evidence for low metallicities (2003)
Fynbo, J.U., Jakobsson, P., Moller, P., Hjorth, J., Thomsen, B., Andersen, M.I., ...
We report on the results of a search for Lyalpha emission from the host galaxy of the z=2.140 GRB 011211 and other galaxies in its surrounding field. We detect Lyalpha emission from the host as well...
The Search for the Afterglow of the Dark GRB 001109 (2003)
Castro Ceron, J.M., Gorosabel, J., Castro-Tirado, A.J., Sokolov, V., Afanasiev, V.L., Fatkhullin, T.A., ...
A multi-colour study of the dark GRB 000210 host galaxy and its environment (2003)
Gorosabel, J., Christensen, L., Hjorth, J., Fynbo, J.U., Pedersen, H., Jensen, B.L., ...
We present UBVRIZJsHKs broad band photometry of the host galaxy of the dark gamma-ray burst (GRB) of February 10, 2000. These observations represent the most exhaustive photometry given to date of...
Gorosabel, J., Fynbo, J.U., Moller, P., Hjorth, J., Pedersen, H., Christensen, L., ...
We present the results provided by an automatic colour-colour discrimination pipe-line developed to discern the different populations of objects present in GRB error boxes. We illustrate the...
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....
GRB 030227: The first multiwavelength afterglow of an INTEGRAL GRB (2003)
Castro-Tirado, A.J., Gorosabel, J., Guziy, S., Reverte, D., Castro Ceron, J.M., Ugarte Postigo, A. De, ...
We present multiwavelength observations of a gamma-ray burst detected by INTEGRAL (GRB 030227) between 5.3 hours and ~ 1.7 days after the event. Here we report the discovery of a dim optical...
Very High Column Density and Small Reddening toward GRB 020124 at z=3.20 (2003)
Hjorth, J., Moller, P., Gorosabel, J., Fynbo, J.U., Toft, S., Jaunsen, A.O., ...
We present optical and near-infrared observations of the dim afterglow of GRB 020124, obtained between 2 and 68 hr after the gamma-ray burst. The burst occurred in a very faint (R>~29.5) damped...
GRB 011121: A Collimated Outflow into Wind-blown Surroundings (2003)
Greiner, J., Klose, S., Salvato, M., Zeh, A., Schwartz, R., Hartmann, D.H., ...
We report optical and near-infrared follow-up observations of GRB 011121 collected predominantly at ESO telescopes in Chile. We discover a break in the afterglow light curve after 1.3 days, which...
A multi-colour study of the dark GRB 000210 host galaxy and its environment (2003)
Gorosabel, J., Christensen, L., Hjorth, J., Fynbo, J. U., Pedersen, H., Jensen, B. L., ...
GRB 030227 : The first multiwavelength afterglow of an INTEGRAL GRB (2003)
Castro-Tirado, A. J., Gorosabel, J., Guziy, S., Reverte, D., Castro Cerón, J. M., ...
GRB 011121 : a collimated outflow into wind-blown surroundings (2003)
Greiner, J., Klose, S., Salvato, M., Zeh, A., Schwarz, R., Hartmann, D. H., ...
The search for the afterglow of the dark GRB 001109 (2003)
Castro Cerón, J. M., Gorosabel, J., Castro-Tirado, A. J., Sokolov, V. V., Afanasiev, V. L., Fatkhullin, T. A., ...
The afterglow and the host galaxy of GRB 011211 (2003)
Jakobsson, P., Hjorth, J., Fynbo, J., Gorosabel, J., Pedersen, K., Burud, I., ...
EMIR: Using GRBs to probe the high redshift Universe (2003)
Andersen , M. I., Brandt , S., Castro Cerón, J. M., Castro Tirado, A. J., Fynbo , J., Gorosabel , J., ...
On the Lyalpha emission from gamma-ray burst host galaxies: Evidence for low metallicities. (2003)
Fynbo, J.P.U., Jakobsson, P., Moller, P., Hjorth, J., Thomsen, B., Andersen, M.I., ...
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 Ly-alpha imaging of two z=2.04 GRB host galaxy fields (2002)
Fynbo, J. P. U., Moller, P., Thomsen, B., Hjorth, J., Gorosabel, J., Andersen, M. I., ...
We report on the results of deep narrow-band Ly-alpha, U and I imaging of the fields of two GRBs at z=2.04 (GRB 000301C and GRB 000926). We find that the host galaxy of GRB 000926 is an extended,...