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...
High Resolution X-ray Imaging of Supernova Remnant 1987A (2009)
Gaensler, B. M., Murray, S. S., Slane, P. O., Park, S., Staveley-Smith, L., ...
We report observations of the remnant of Supernova 1987A with the High Resolution Camera (HRC) onboard the Chandra X-ray Observatory. A direct image from the HRC resolves the annular structure of the...
GRB081028 and its late-time afterglow re-brightening (2009)
Margutti, R., Genet, F., Granot, J., Duran, R. Barniol, Guidorzi, C., Chincarini, G., ...
Swift captured for the first time a smoothly rising X-ray re-brightening of clear non-flaring origin after the steep decay in a long gamma-ray burst (GRB): GRB081028. A rising phase is likely present...
Romano, P., Sidoli, L., Ducci, L., Cusumano, G., La Parola, V., Pagani, C., ...
IGR J18483-0311 is an X-ray pulsar with transient X-ray activity, belonging to the new class of High Mass X-ray Binaries called Supergiant Fast X-ray Transients. This system is one of the two members...
The JANUS X-Ray Flash Monitor (2009)
Falcone, A. D., Burrows, D. N., Barthelmy, S., Chang, W., Fredley, J., Kelly, M., ...
JANUS is a NASA small explorer class mission which just completed phase A and was intended for a 2013 launch date. The primary science goals of JANUS are to use high redshift (6
Page, K. L., Willingale, R., Bissaldi, E., Postigo, A. De Ugarte, Holland, S. T., McBreen, S., ...
GRB 080810 was one of the first bursts to trigger both Swift and the Fermi Gamma-ray Space Telescope. It was subsequently monitored over the X-ray and UV/optical bands by Swift, in the optical by...
Sidoli, L., Romano, P., Esposito, P., La Parola, V., Kennea, J. A., Krimm, H. A., ...
The Supergiant Fast X-ray Transient (SFXT) SAXJ1818.6-1703 underwent an outburst on 2009 May 6 and was observed with Swift. We report on these observations which, for the first time, allow us to...
Monitoring Supergiant Fast X-ray Transients with Swift. Results from the first year (2009)
Romano, P., Sidoli, L., Cusumano, G., La Parola, V., Vercellone, S., Pagani, C., ...
Swift has allowed the possibility to give Supergiant Fast X-ray Transients (SFXTs), the new class of High Mass X-ray Binaries discovered by INTEGRAL, non serendipitous attention throughout all phases...
Swift Observations of Hard X-ray Emitting White Dwarfs in Symbiotic Stars (2009)
Kennea, J. A., Mukai, K., Sokoloski, J. L., Luna, G. J. M., Tueller, J., Markwardt, C. B., ...
The X-ray emission from most accreting white dwarfs (WDs) in symbiotic binary stars is quite soft. Several symbiotic WDs, however, produce strong X-ray emission at energies greater than ~20 keV. The...
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...
Sidoli, L., Romano, P., Ducci, L., Paizis, A., Cusumano, G., Mangano, V., ...
We report on new X-ray outbursts observed with Swift from three Supergiant Fast X-ray Transients (SFXTs): XTEJ1739-302, IGRJ17544-2619 and IGRJ08408-4503. The former two outbursts were caught during...
Optical Classification of Gamma-Ray Bursts in the Swift Era (2009)
Van Der Horst, A. J., Kouveliotou, C., Gehrels, N., Rol, E., Cannizzo, J. K., ...
We propose a new method for the classification of optically dark gamma-ray bursts (GRBs), based on the X-ray and optical-to-X-ray spectral indices of GRB afterglows, and utilizing the spectral...
Fermi/LAT discovery of gamma-ray emission from the flat-spectrum radio quasar PKS 1454-354 (2009)
Edwards, P. G., Chester, M. M., Burrows, D. N., Hauser, M., Wagner, S.
We report the discovery by the Large Area Telescope (LAT) onboard the Fermi Gamma-ray Space Telescope of high-energy gamma-ray (GeV) emission from the flat-spectrum radio quasar PKS 1454-354...
Swift and Supergiant Fast X-ray Transients: a novel monitoring approach (2009)
Romano, P., Sidoli, L., Mangano, V., Kennea, J. A., Cusumano, G., Vercellone, S., ...
We describe our monitoring strategy which best exploits the sensitivity and flexibility of Swift to study the long-term behaviour of Supergiant Fast X-ray Transients (SFXTs). We present observations...
The unusual X-ray light-curve of GRB 080307: the onset of the afterglow? (2009)
Page, K. L., Willingale, R., O'Brien, P. T., Tanvir, N. R., Osborne, J. P., Zhang, B., ...
Swift-detected GRB 080307 showed an unusual smooth rise in its X-ray light-curve around 100 seconds after the burst, at the start of which the emission briefly softened. This `hump' has a longer...
GRB 080913 at redshift 6.7 (2009)
Greiner, J., Krühler, T., Fynbo, J. P. U., Rossi, A., Schwarz, R., Klose, S., ...
Jet breaks and Energetics of Swift GRB X-ray Afterglows (2008)
Racusin, J. L., Liang, E. W., Burrows, D. N., Falcone, A., Sakamoto, T., Zhang, B. B., ...
We present a systematic temporal and spectral study of all Swift-XRT observations of GRB afterglows discovered between 2005 January and 2007 December. After constructing and fitting all light curves...
Evans, P. A., Beardmore, A. P., Page, K. L., Osborne, J. P., O'Brien, P. T., Willingale, R., ...
We present a homogeneous X-ray analysis of all 318 Gamma Ray Bursts detected by the X-ray Telescope on the Swift satellite up to 2008 July 23; this represents the largest sample of X-ray GRB data...
Godet, O., Beardmore, A. P., Abbey, A. F., Osborne, J. P., Cusumano, G., Pagani, C., ...
(Abbreviated) We show that the XRT spectral response calibration was complicated by various energy offsets in photon counting (PC) and windowed timing (WT) modes related to the way the CCD is...
Piranomonte, S., Ward, P. A., Fiore, F., Vergani, S. D., D'Elia, V., Krongold, Y., ...
The aim of this paper is to investigate the environment of gamma ray bursts (GRBs) and the interstellar matter of their host galaxies. We use to this purpose high resolution spectroscopic...
Sidoli, L., Romano, P., Cusumano, G., Mangano, V., Vercellone, S., Paizis, A., ...
Supergiant Fast X-ray Transients (SFXTs) are a sub-class of High Mass X-ray Binaries (HMXBs) associated with OB supergiant companions and displaying transient X-ray activity. This behaviour is quite...
Sidoli, L., Romano, P., Mangano, V., Cusumano, G., Vercellone, S., Kennea, J. A., ...
IGR J17544-2619 and XTE J1739-302 are considered the prototypical sources of the new class of High Mass X-ray Binaries, the Supergiant Fast X-ray Transients (SFXTs).These sources were observed during...
Immler, S., Modjaz, M., Landsman, W., Bufano, F., Brown, P. J., Milne, P., ...
The peculiar Type Ib supernova (SN) 2006jc has been observed with the UV/Optical Telescope (UVOT) and X-Ray Telescope (XRT) on board the Swift observatory over a period of 19-183 days after the...
Correlations of prompt and afterglow emission in Swift long and short gamma-ray bursts (2008)
Gehrels, N., Barthelmy, S.D., Burrows, D.N., Cannizzo, J.K., Chincarini, G., Fenimore, E., ...
Correlation studies of prompt and afterglow emission from gamma-ray bursts (GRBs) between different spectral bands have been difficult to do in the past because few bursts had comprehensive and...
Broadband observations of the naked-eye gamma-ray burst GRB 080319B (2008)
Racusin, J.L., Karpov, S.V., Sokolowski, M., Granot, J., Wu, X.F., Pal'shin, V., ...
Long-duration gamma-ray bursts (GRBs) release copious amounts of energy across the entire electromagnetic spectrum, and so provide a window into the process of black hole formation from the collapse...
The rapidly flaring afterglow of the very bright and energetic GRB 070125 (2008)
Updike, A.C., Haislip, J.B., Nysewander, M.C., Fruchter, A.S., Kann, D.A., Klose, S., ...
We report on multiwavelength observations, ranging from X-ray to radio wave bands, of the IPN-localized gamma-ray burst GRB 070125. Spectroscopic observations reveal the presence of absorption lines...
An extremely luminous X-ray outburst at the birth of a supernova (2008)
Soderberg, A.M., Berger, E., Page, K.L., Schady, P., Parrent, J., Pooley, D., ...
Massive stars end their short lives in spectacular explosions—supernovae—that synthesize new elements and drive galaxy evolution. Historically, supernovae were discovered mainly through their...
Early afterglow detection in the Swift observations of GRB 050801 (2007)
De Pasquale, Massimiliano, Oates, S. R., Page, M. J., Burrows, D. N., Blustin, A. J., Zane, S., ...
We present results of Swift optical, UV and X-ray observations of the afterglow of GRB 050801. The source is visible over the full optical, UV and X-ray energy range of the Swift UVOT and XRT...
GRB 060714: No Clear Dividing Line Between Prompt Emission and X-ray Flares (2007)
Krimm, H. A., Granot, J., Marshal, F., Perri, M., Barthelmy, S. D., Burrows, D. N., ...
The long gamma-ray burst GRB 060714 was observed to exhibit a series of five X-ray flares beginning ~70 s after the burst trigger T0 and continuing until T0 + ~200 s. The first two flares were...
D'Elia, V., Fiore, F., Meurs, E.J.A., Chincarini, G., Melandri, A., Norci, Laura, ...
Aims. The aim of this paper is to study the Gamma Ray Burst (GRB) environment through the analysis of the optical absorption features due to the gas surrounding the GRB. Methods. To this purpose we...
D'Elia, V., Fiore, F., Meurs, E.J.A., Chincarini, G., Melandri, A., Norci, Laura, ...
Aims. The aim of this paper is to study the Gamma Ray Burst (GRB) environment through the analysis of the optical absorption features due to the gas surrounding the GRB. Methods. To this purpose we...
The short GRB 051210 observed by Swift (2007)
La Parola, V., Mangano, V., Zhang, B., Cusumano, G., Mineo, T., Troja, E., ...
We report on the short GRB051210 detected by the Swift-BAT. The light curve, on which we focus mainly, shows a hint of extended emission in the BAT energy range, a steep decay of the X-ray emission,...
Attributes of flares in Gamma Ray Bursts: sample I (2007)
Chincarini, G., Moretti, A., Romano, P., Falcone, A. D., Campana, S., Covino, S., ...
We discuss some of the preliminary results and findings derived from the analysis of a first sample of flares detected by the XRT on board Swift. The analysis shows that the morphology of flares is...
X-ray Flares in Early GRB Afterglows (2007)
Burrows, D. N., Falcone, A., Chincarini, G., Morris, D., Romano, P., Hill, J. E., ...
The Swift X-ray Telescope (XRT) has discovered that flares are quite common in early X-ray afterglows of Gamma-Ray Bursts (GRBs), being observed in roughly 50% of afterglows with prompt followup...
Panchromatic study of GRB 060124: from precursor to afterglow (2006)
Romano, P., Campana, S., Chincarini, G., Cummings, J., Cusumano, G., Holland, S. T., ...
We present observations of GRB 060124, the first event for which both the prompt and the afterglow emission could be observed simultaneously and in their entirety by the three Swift instruments and...
Cenko, S. B., Kasliwal, M., Harrison, F. A., Pal'shin, V., Frail, D. A., Cameron, P. B., ...
We present observations of the unusually bright and long γ-ray burst GRB 050820A, one of the best sampled broadband data sets in the Swift era. The γ-ray light curve is marked by a soft precursor...
SWIFT observations of TeV BL Lac objects (2006)
Tramacere, A., Giommi, P., Massaro, E., Perri, M., Nesci, R., Colafrancesco, S., ...
Context: We present the results of a set of observations of nine TeV detected BL Lac objects performed by the XRT and UVOT detectors on board the Swift satellite between March and December 2005....
Swift Discovery of Gamma-Ray Bursts without Jet Break Feature in their X-Ray Afterglows (2006)
Sato, G., Yamazaki, R., Ioka, K., Sakamoto, T., Takahashi, T., Nakazawa, K., ...
We analyze Swift gamma-ray bursts (GRBs) and X-ray afterglows for three GRBs with spectroscopic redshift determinations -- GRB 050401, XRF 050416a, and GRB 050525a. We find that the relation between...
Extreme Properties Of GRB061007: A Highly Energetic Or A Highly Collimated Burst? (2006)
Schady, P., De Pasquale, M., Page, M. J., Vetere, L., Pandey, S. B., Wang, X. Y., ...
GRB061007 is the brightest gamma-ray burst (GRB) to be detected by Swift and is accompanied by an exceptionally luminous afterglow that had a V-band magnitude
Extreme Properties Of GRB061007: A Highly Energetic OR Highly Collimated Burst? (2006)
Schady, P., De Pasquale, M., Cummings, J., Page, M. J., Pandey, S. B., Wang, X. Y., ...
%auto-ignore This paper has been withdrawn by the authors due to dublicate submission. To download the paper please go to astro-ph/0611081
Long-term monitoring of the X-ray afterglow of GRB 050408 with Swift/XRT (2006)
Capalbi, M., Malesani, D., Perri, M., Giommi, P., Covino, S., Cusumano, G., ...
We present observations of the X-ray afterglow of GRB 050408, a gamma-ray burst discovered by HETE-II. Swift began observing the field 42 min after the burst, performing follow-up over a period of 38...
Gehrels, N., Norris, J. P., Mangano, V., Barthelmy, S. D., Burrows, D. N., Granot, J., ...
Gamma ray bursts (GRBs) are known to come in two duration classes, separated at ~2 s. Long bursts originate from star forming regions in galaxies, have accompanying supernovae (SNe) when near enough...
Swift observations of GRB050904: the most distant cosmic explosion ever observed (2006)
Cusumano, G., Mangano, V., Chincarini, G., Panaitescu, A., Burrows, D. N., La Parola, V., ...
Swift discovered the high redshift (z=6.29) GRB050904 with the Burst Alert Telescope (BAT) and began observing with its narrow field instruments 161 s after the burst onset. This gamma-ray burst is...
D'Elia, V., Fiore, F., Meurs, E., Chincarini, G., Melandri, A., Norci, L., ...
We analyze high resolution spectroscopic observations of the optical afterglow of GRB050730, obtained with UVES@VLT about hours after the GRB trigger. The spectrum shows that the ISM of the GRB host...
The first Swift X-ray Flash: The faint afterglow of XRF 050215B (2006)
Levan, A. J., Osborne, J. P., Tanvir, N. R., Page, K. L., Rol, E., Zhang, B., ...
We present the discovery of XRF 050215B and its afterglow. The burst was detected by the Swift BAT during the check-out phase and observations with the X-ray telescope began approximately 30 minutes...
Swift observations of GRB050712 (2006)
De Pasquale, M., Grupe, D., Poole, T. S., Breeveld, A. A., Zane, S., Rosen, S. R., ...
We present the results of X-ray and optical observations of GRB050712 performed by Swift. The X-ray lightcurve of this burst exhibits episodes of flares in the first 1000s, the same epoch at which...
GRB 050713A: High Energy Observations of the GRB Prompt and Afterglow Emission (2006)
Morris, D. C., Reeves, J., Pal'shin, V., Garczarczyk, M., Falcone, A. D., Burrows, D. N., ...
Swift discovered GRB 050713A and slewed promptly to begin observing with its narrow field instruments 72.6 seconds after the burst onset, while the prompt gamma-ray emission was still detectable in...
GRB 050505: A high redshift burst discovered by Swift (2006)
Hurkett, C. P., Osborne, J. P., Page, K. L., Rol, E., Goad, M. R., O'Brien, P. T., ...
We report the discovery and subsequent multi-wavelength afterglow behaviour of the high redshift (z = 4.27) Gamma Ray Burst GRB 050505. This burst is the third most distant burst, measured by...
Swift panchromatic observations of the bright gamma‐ray burst GRB 050525a (2006)
Blustin, A.J., Band, D., Barthelmy, S., Boyd, P., Capalbi, M., Holland, S.T., ...
The bright gamma-ray burst GRB 050525a has been detected with the Swift observatory, providing unique multiwavelength coverage from the very earliest phases of the burst. The X-ray and optical/UV...
The Anomalous Early Afterglow of GRB 050801 (2006)
Rykoff, E.S., Aharonian, F., Akerlof, C. W., Mangano, V., Ashley, M. C. B., Güver, T., ...
The ROTSE-IIIc telescope at the HESS site, Namibia, obtained the earliest detection of optical emission from a gamma-ray burst (GRB), beginning only 21.8 s from the onset of Swift GRB 050801. The...
Swift X-Ray Telescope Observations of the Deep Impact Collision (2006)
Willingale, R., O'Brien, P. T., Cowley, S. W. H., Jones, G. H., McComas, D. J., Mason, K. O., ...
GRB 060108: refined XRT analysis (2006)
Page, K. L., Beardmore, A. P., Goad, M. R., Burrows, D. N., Greiner, J., Hinshaw, D.
The Giant X-ray Flare of GRB 050502B: Evidence for Late-Time Internal Engine Activity (2005)
Falcone, A. D., Burrows, D. N., Lazzati, D., Campana, S., Kobayashi, S., Zhang, B., ...
Until recently, X-ray flares during the afterglow of gamma ray bursts (GRBs) were a rarely detected phenomenon, thus their nature is unclear. During the afterglow of GRB 050502B, the largest X-ray...
Swift and XMM observations of the dark GRB 050326 (2005)
Moretti, A., De Luca, A., Malesani, D., Campana, S., Tiengo, A., Cucchiara, A., ...
We present Swift and XMM observations of GRB 050326, detected by Swift-BAT. The fluence was 7.7x10^-6 erg cm^-2 (20-150 keV), and its spectrum was hard, with a power law photon index 1.25. The...
An origin for short g-ray bursts unassociated with current star formation (2005)
Barthelmy, S. D., Chincarini, G., Burrows, D. N., Gehrels, N., Covino, S., Moretti, A., ...
Two short (
Swift observations of the X-ray bright GRB 050315 (2005)
Vaughan, S., Goad, M. R., Beardmore, A. P., O'Brien, P. T., Osborne, J. P., Page, K. L., ...
This paper discusses Swift observations of the gamma-ray burst GRB 050315 (z=1.949) from 80 s to 10 days after the onset of the burst. The X-ray light curve displayed a steep early decay (t^-5) for...
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...
Optical emission from GRB 050709: a short/hard GRB in a star forming galaxy (2005)
Covino, S., Malesani, D., Israel, G. L., D'Avanzo, P., Antonelli, L. A., Chincarini, G., ...
We present optical observations of the short/hard gamma-ray burst GRB 050709, the first such event with an identified optical counterpart. The object is coincident with a weak X-ray source and is...
Evidence for a Canonical GRB Afterglow Light Curve in the Swift/XRT Data (2005)
Nousek, J. A., Kouveliotou, C., Grupe, D., Page, K., Granot, J., Ramirez-Ruiz, E., ...
We present new observations of the early X-ray afterglows of the first 27 gamma-ray bursts (GRBs) detected with the Swift X-ray Telescope (XRT). The early X-ray afterglows show a canonical behavior,...
Bright X-ray Flares in Gamma-Ray Burst Afterglows (2005)
Burrows, D. N., Romano, P., Falcone, A., Kobayashi, S., Zhang, B., Moretti, A., ...
Gamma-ray burst (GRB) afterglows have provided important clues to the nature of these massive explosive events, providing direct information on the nearby environment and indirect information on the...
Erratum: The Swift Gamma-Ray Burst Mission (2005)
Gehrels, N., Chincarini, G., Giommi, P., Mason, K. O., Nousek, J. A., Wells, A. A., ...
GRB 051006: XRT refined analysis (2005)
Capalbi, M., Perri, M., Kennea, J., Burrows, D. N., Morris, D., Angelini, L., ...
GRB 050712: Swift XRT afterglow position (2005)
Falcone, A., Burrows, D. N., Morris, D. C., Grupe, D., Racusin, J. L., Nousek, J. A., ...
Swift-BAT trigger 155072 is probably not a GRB (2005)
Greiner, J., Beardmore, A., Burrows, D. N., Chester, M., Cummings, J., Gehrels, N., ...
GRB 050306: Confirmation of X-ray afterglow (2005)
Mangano, V., Cusumano, G., Mineo, T., Perri, M., Giommi, P., Capalbi, M., ...
GRB050318: Swift XRT position (2005)
Nousek, J. A., Morris, D. C., Burrows, D. N., Grupe, D., Chester, M., Meszaros, P., ...
GRB 050730: XRT refined analysis (2005)
Perri, M., Capalbi, M., Giommi, P., Grupe, D., Burrows, D. N., Angelini, L., ...
In-flight calibration of the Swift XRT point spread function (2005)
Moretti, Alberto, Campana, Sergio, Mineo, T., Romano, Patrizia, Abbey, A. F., Angelini, L., ...
In-flight calibration of the SWIFT XRT effective area (2005)
Romano, P., Cusumano, G., Campana, S., Mangano, V., Moretti, A., Abbey, A. F., ...
The Swift Gamma-Ray Burst Mission (2004)
Gehrels, N., Chincarini, G, Giommi, P., Mason, K. O., Nousek, J. A., Wells, A. A., ...
The Swift mission, scheduled for launch in early 2004, is a multiwavelength observatory for gamma-ray burst (GRB) astronomy. It is the first-of-its-kind autonomous rapid-slewing satellite for...
The Chandra Deep Field North Survey. V. 1 Ms Source Catalogs (2001)
Brandt, W. N., Alexander, D. M., Hornschemeier, A. E., Garmire, G. P., Schneider, D. P., Barger, A. J., ...
An extremely deep X-ray survey (about 1 Ms) of the Hubble Deep Field North and its environs (about 450 arcmin^2) has been performed with the Advanced CCD Imaging Spectrometer on board the Chandra...