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GRB 070518: A Gamma-ray Burst with Optically Dim Luminosity

We present our optical observations of {\em Swift} GRB 070518 afterglow obtained at the 0.8-m Tsinghua University-National Astronomical Observatory of China telescope (TNT) at Xinglong Observatory. Our follow-up observations were performed…

High Energy Astrophysical Phenomena · Physics 2015-05-14 L. P. Xin , W. K. Zheng , J. Wang , J. S. Deng , Y. Urata , Y. L. Qiu , K. Y. Huang , J. Y. Hu , J. Y. Wei

The bright Gamma-Ray Burst of February 10, 2000: a case study of an optically dark GRB

The gamma-ray burst GRB000210 had the highest gamma-ray peak flux of any event localized by BeppoSAX as yet but it did not have a detected optical afterglow. It is therefore one of the events recently classified as dark GRBs or GHOST (GRB…

Astrophysics · Physics 2016-08-16 L. Piro , D. A. Frail , J. Gorosabel , G. Garmire , P. Soffitta , L. Amati , M. I. Andersen , L. A. Antonelli , E. Berger , F. Frontera , J. Fynbo , G. Gandolfi , M. R. Garcia , J. Hjorth , J. in 't Zand , B. L. Jensen , N. Masetti , P. Möller , H. Pedersen , E. Pian , M. H. Wieringa

Evidence for Supernova-Synthesised Dust from the Rising Afterglow of GRB 071025 at z~5

We present observations and analysis of the broadband afterglow of Swift GRB 071025. Using optical and infrared (RIYJHK) photometry, we derive a photometric redshift of 4.4 < z < 5.2; at this redshift our simultaneous multicolour…

High Energy Astrophysical Phenomena · Physics 2015-05-14 Daniel A. Perley , J. S. Bloom , C. R. Klein , S. Covino , T. Minezaki , P. Wozniak , W. T. Vestrand , G. G. Williams , P. Milne , N. R. Butler , A. C. Updike , T. Krühler , P. Afonso , A. Antonelli , L. Cowie , P. Ferrero , J. Greiner , D. H. Hartmann , Y. Kakazu , A. Küpcü Yoldas , A. N. Morgan , P. A. Price , J. X. Prochaska , Y. Yoshii

The mysterious optical afterglow spectrum of GRB140506A at z=0.889

Context. Gamma-ray burst (GRBs) afterglows probe sightlines to star-forming regions in distant star-forming galaxies. Here we present a study of the peculiar afterglow spectrum of the z = 0.889 Swift GRB 140506A. Aims. Our aim is to…

Astrophysics of Galaxies · Physics 2014-11-19 J. P. U. Fynbo , T. Krühler , K. Leighly , C. Ledoux , P. M. Vreeswijk , S. Schulze , P. Noterdaeme , D. Watson , R. A. M. J. Wijers , J. Bolmer , Z. Cano , L. Christensen , S. Covino , V. D'Elia , H. Flores , M. Friis , P. Goldoni , J. Greiner , F. Hammer , J. Hjorth , P. Jakobsson , J. Japelj , L. Kaper , S. Klose , F. Knust , G. Leloudas , A. Levan , D. Malesani , B. Milvang-Jensen , P. Møller , A. Nicuesa Guelbenzu , S. Oates , E. Pian , P. Schady , M. Sparre , G. Tagliaferri , N. Tanvir , C. C. Thöne , A. de Ugarte Postigo , S. Vergani , K. Wiersema , D. Xu , T. Zafar

Dust and Gas in the Local Environments of Gamma-Ray Bursts

Using a sample of gamma-ray burst (GRB) afterglows detected by both the X-Ray and the UV/Optical Telescopes (XRT and UVOT) on Swift, we modelled the spectral energy distributions (SEDs) to determine gas column densities and dust extinction…

Astrophysics · Physics 2010-11-11 P. Schady , K. O. Mason , M. J. Page , M. De Pasquale , D. C. Morris , P. Romano , P. W. A. Roming , S. Immler , D. E. Vanden Berk

GRB050223: A faint Gamma-Ray Burst discovered by Swift

GRB050223 was discovered by the Swift Gamma-Ray Burst Explorer on 23 February 2005 and was the first Gamma-Ray Burst to be observed by both Swift and XMM-Newton. At the time of writing (May 2005), it has one of the faintest GRB afterglows…

Astrophysics · Physics 2009-11-11 K. L. Page , E. Rol , A. J. Levan , B. Zhang , J. P. Osborne , P. T. O'Brien , A. P. Beardmore , D. N. Burrows , S. Campana , G. Chincharini , J. R. Cummings , G. Cusumano , N. Gehrels , P. Giommi , M. R. Goad , O. Godet , V. Mangano , G. Tagliaferri , A. A. Wells

Probing Cosmic Dust of the Early Universe through High-Redshift Gamma-Ray Bursts

We explore the extinction properties of the dust in the distant universe through the afterglows of high-redshifted GRBs based on the "Drude" model which, unlike previous studies, does not require a prior assumption of template extinction…

Astrophysics · Physics 2008-12-18 S. L. Liang , Aigen Li

The optical afterglow and host galaxy of GRB 000926

In this paper we illustrate with the case of GRB 000926 how Gamma Ray Bursts (GRBs) can be used as cosmological lighthouses to identify and study star forming galaxies at high redshifts. The optical afterglow of the burst was located with…

Astrophysics · Physics 2009-11-07 J. P. U. Fynbo , J. Gorosabel , P. Moller , J. Hjorth , M. I. Andersen , M. P. Egholm , B. L. Jensen , H. Pedersen , B. Thomsen , M. Weidinger

Short GRB 160821B: a reverse shock, a refreshed shock, and a well-sampled kilonova

We report our identification of the optical afterglow and host galaxy of the short-duration gamma-ray burst GRB 160821B. The spectroscopic redshift of the host is $z=0.162$, making it one of the lowest redshift sGRBs identified by Swift.…

High Energy Astrophysical Phenomena · Physics 2019-09-25 G. P. Lamb , N. R. Tanvir , A. J. Levan , A. de Ugarte Postigo , K. Kawaguchi , A. Corsi , P. A. Evans , B. Gompertz , D. B. Malesani , K. L. Page , K. Wiersema , S. Rosswog , M. Shibata , M. Tanaka , A. J. van der Horst , Z. Cano , J. P. U. Fynbo , A. S. Fruchter , J. Greiner , K. Heintz , A. Higgins , J. Hjorth , L. Izzo , P. Jakobsson , D. A. Kann , P. T. O'Brien , D. A. Perley , E. Pian , G. Pugliese , R. L. C. Starling , C. C. Thöne , D. Watson , R. A. M. J. Wijers , D. Xu

The nature of "dark" gamma-ray bursts

Context: Thirteen years after the discovery of the first afterglows, the nature of dark gamma-ray bursts (GRB) still eludes explanation: while each ng-duration GRB typically has an X-ray afterglow, optical/NIR emission is only seen for…

High Energy Astrophysical Phenomena · Physics 2016-08-14 J. Greiner , T. Krühler , S. Klose , P. Afonso , C. Clemens , R. Filgas , D. H. Hartmann , A. Küpcü Yoldaş , M. Nardini , F. Olivares Estay , A. Rau , A. Rossi , P. Schady , A. Updike

Expected Number and Flux Distribution of Gamma-Ray-Burst Afterglows with High Redshifts

If Gamma-Ray-Bursts (GRBs) occur at high redshifts, then their bright afterglow emission can be used to probe the ionization and metal enrichment histories of the intervening intergalactic medium during the epoch of reionization. In…

Astrophysics · Physics 2009-10-31 Benedetta Ciardi , Abraham Loeb

Multi-wavelength analysis of the field of the dark burst GRB 031220

We have collected and analyzed data taken in different spectral bands (from X-ray to optical and infrared) of the field of GRB031220 and we present results of such multiband observations. Comparison between images taken at different epochs…

Astrophysics · Physics 2007-05-23 A. Melandri , B. Gendre , L. A. Antonelli , A. Grazian , A. de Ugarte Postigo , J. Gorosabel , L. Piro , G. Kosugi , N. Kawai , M. de Pasquale , G. P. Garmire

The first JWST spectrum of a GRB afterglow: No bright supernova in observations of the brightest GRB of all time, GRB 221009A

We present JWST and Hubble Space Telescope (HST) observations of the afterglow of GRB 221009A, the brightest gamma-ray burst (GRB) ever observed. This includes the first mid-IR spectra of any GRB, obtained with JWST/NIRSPEC (0.6-5.5 micron)…

High Energy Astrophysical Phenomena · Physics 2023-04-05 A. J. Levan , G. P. Lamb , B. Schneider , J. Hjorth , T. Zafar , A. de Ugarte Postigo , B. Sargent , S. E. Mullally , L. Izzo , P. D'Avanzo , E. Burns , J. F. Agüí Fernández , T. Barclay , M. G. Bernardini , K. Bhirombhakdi , M. Bremer , R. Brivio , S. Campana , A. A. Chrimes , V. D'Elia , M. Della Valle , M. De Pasquale , M. Ferro , W. Fong , A. S. Fruchter , J. P. U. Fynbo , N. Gaspari , B. P. Gompertz , D. H. Hartmann , C. L. Hedges , K. E. Heintz , K. Hotokezaka , P. Jakobsson , D. A. Kann , J. A. Kennea , T. Laskar , E. Le Floc'h , D. B. Malesani , A. Melandri , B. D. Metzger , S. R. Oates , E. Pian , S. Piranomonte , G. Pugliese , J. L. Racusin , J. C. Rastinejad , M. E. Ravasio , A. Rossi , A. Saccardi , R. Salvaterra , B. Sbarufatti , R. L. C. Starling , N. R. Tanvir , C. C. Thöne , A. J. van der Horst , S. D. Vergani , D. Watson , K. Wiersema , R. A. M. J. Wijers , D. Xu

A mean redshift of 2.8 for Swift gamma-ray bursts

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 Universe. Here we present a carefully selected…

Astrophysics · Physics 2010-04-06 P. Jakobsson , A. Levan , J. P. U. Fynbo , R. Priddey , J. Hjorth , N. Tanvir , D. Watson , B. L. Jensen , J. Sollerman , P. Natarajan , J. Gorosabel , J. M. Castro Cerón , K. Pedersen , T. Pursimo , A. S. Árnadóttir , A. J. Castro-Tirado , C. J. Davis , H. J. Deeg , D. A. Fiuza , S. Mykolaitis , S. G. Sousa

GRB 160410A: the first Chemical Study of the Interstellar Medium of a Short GRB

Short Gamma-Ray Bursts (SGRBs) are produced by the coalescence of compact binary systems which are remnants of massive stars. GRB 160410A is classified as a short-duration GRB with extended emission and is currently the farthest SGRB with a…

High Energy Astrophysical Phenomena · Physics 2023-03-01 J. F. Agüí Fernández , C. C. Thöne , D. A. Kann , A. de Ugarte Postigo , J. Selsing , P. Schady , R. M. Yates , J. Greiner , S. R. Oates , D. Malesani , D. Xu , A. Klotz , S. Campana , A. Rossi , D. A. Perley , M. Blazek , P. D'Avanzo , A. Giunta , D. Hartmann , K. E. Heintz , P. Jakobsson , C. C. Kirkpatrick , C. Kouveliotou , A. Melandri , G. Pugliese , R. Salvaterra , R. L. C. Starling , N. R. Tanvir , S. D. Vergani , K. Wiersema

GRB 130427A: a Nearby Ordinary Monster

Long-duration Gamma-Ray Bursts (GRBs) are an extremely rare outcome of the collapse of massive stars, and are typically found in the distant Universe. Because of its intrinsic luminosity ($L\sim 3 \times 10^{53}$ erg s$^{-1}$) and its…

High Energy Astrophysical Phenomena · Physics 2019-08-19 A. Maselli , A. Melandri , L. Nava , C. G. Mundell , N. Kawai , S. Campana , S. Covino , J. R. Cummings , G. Cusumano , P. A. Evans , G. Ghirlanda , G. Ghisellini , C. Guidorzi , S. Kobayashi , P. Kuin , V. La Parola , V. Mangano , S. Oates , T. Sakamoto , M. Serino , F. Virgili , B. -B. Zhang , S. Barthelmy , A. Beardmore , M. G. Bernardini , D. Bersier , D. Burrows , G. Calderone , M. Capalbi , J. Chiang , P. D'Avanzo , V. D'Elia , M. De Pasquale , D. Fugazza , N. Gehrels , A. Gomboc , R. Harrison , H. Hanayama , J. Japelj , J. Kennea , D. Kopac , C. Kouveliotou , D. Kuroda , A. Levan , D. Malesani , F. Marshall , J. Nousek , P. O'Brien , J. P. Osborne , C. Pagani , K. L. Page , M. Page , M. Perri , T. Pritchard , P. Romano , Y. Saito , B. Sbarufatti , R. Salvaterra , I. Steele , N. Tanvir , G. Vianello , B. Wiegand , K. Wiersema , Y. Yatsu , T. Yoshii , G. Tagliaferri

The ultra-long GRB 220627A at z=3.08

GRB 220627A is a rare burst with two distinct gamma-ray emission episodes separated by almost 1000 s that triggered the Fermi Gamma-ray Burst Monitor twice. High-energy GeV emission was detected by the Fermi Large Area Telescope coincident…

High Energy Astrophysical Phenomena · Physics 2023-08-30 S. de Wet , L. Izzo , P. J. Groot , S. Bisero , V. D'Elia , M. De Pasquale , D. H. Hartmann , K. E. Heintz , P. Jakobsson , T. Laskar , A. Levan , A. Martin-Carrillo , A. Melandri , A. Nicuesa Guelbenzu , G. Pugliese , A. Rossi , A. Saccardi , S. Savaglio , P. Schady , N. R. Tanvir , H. van Eerten , S. Vergani

GRB 050826: A Subluminous Event at z = 0.296 Finds its Place in the Luminosity Distribution of Gamma-Ray Burst Afterglows

We present the optical identification and spectroscopy of the host galaxy of GRB 050826 at a redshift z = 0.296 +/- 0.001. Image subtraction among observations obtained on three consecutive nights, reveals a fading object 5 hours after the…

Astrophysics · Physics 2009-11-13 N. Mirabal , J. P. Halpern , P. T. O'Brien

Gamma-Ray Bursts: Afterglow Implications, Progenitor Clues and Prospects

Gamma-ray bursts (GRB) are sudden, intense flashes of gamma-rays which, for a few blinding seconds, light up in an otherwise fairly dark gamma-ray sky. They are detected at the rate of about once a day, and while they are on, they outshine…

Astrophysics · Physics 2014-10-13 P. Meszaros

Discovery of the short gamma-ray burst GRB 050709

Gamma-Ray Bursts (GRBs) fall into two classes: short-hard and long-soft bursts. The latter are now known to have X-ray and optical afterglows, to occur at cosmological distances in star-forming galaxies, and to be associated with the…

Astrophysics · Physics 2011-07-19 J. S. Villasenor , D. Q. Lamb , G. R. Ricker , J. -L. Atteia , N. Kawai , N. Butler , Y. Nakagawa , J. G. Jernigan , M. Boer , G. B. Crew , T. Q. Donaghy , J. Doty , E. E. Fenimore , M. Galassi , C. Graziani , K. Hurley , A. Levine , F. Martel , M. Matsuoka , J. -F. Olive , G. Prigozhin , T. Sakamoto , Y. Shirasaki , M. Suzuki , T. Tamagawa , R. Vanderspek , S. E. Woosley , A. Yoshida , J. Braga , R. Manchanda , G. Pizzichini , K. Takagishi , M. Yamauchi