Related papers: Testing Reionization with Gamma Ray Burst Absorpti…

Exploring dust extinction at the edge of reionization

The brightness of gamma-ray burst (GRB) afterglows and their occurrence in young, blue galaxies make them excellent probes to study star forming regions in the distant Universe. We here elucidate dust extinction properties in the early…

Cosmology and Nongalactic Astrophysics · Physics 2015-03-17 Tayyaba Zafar , Darach J. Watson , 1 Nial R. Tanvir , Johan P. U. Fynbo , Rhaana L. C. Starling , Andrew J. Levan

Gamma-ray Burst Cosmology

Gamma-ray bursts (GRBs) are the most luminous electromagnetic explosions in the Universe, which emit up to $8.8\times10^{54}$ erg isotropic equivalent energy in the hard X-ray band. The high luminosity makes them detectable out to the…

High Energy Astrophysical Phenomena · Physics 2015-06-03 F. Y. Wang , Z. G. Dai , E. W. Liang

The properties of GRB 120923A at a spectroscopic redshift of z=7.8

Gamma-ray bursts (GRBs) are powerful probes of early stars and galaxies, during and potentially even before the era of reionization. Although the number of GRBs identified at z>6 remains small, they provide a unique window on typical…

High Energy Astrophysical Phenomena · Physics 2018-10-10 N. R. Tanvir , T. Laskar , A. J. Levan , D. A. Perley , J. Zabl , J. P. U. Fynbo , J. Rhoads , S. B. Cenko , J. Greiner , K. Wiersema , J. Hjorth , A. Cucchiara , E. Berger , M. N. Bremer , Z. Cano , B. E. Cobb , S. Covino , V. D'Elia , W. Fong , A. S. Fruchter , P. Goldoni , F. Hammer , K. E. Heintz , P. Jakobsson , D. A. Kann , L. Kaper , S. Klose , F. Knust , T. Kruehler , D. Malesani , K. Misra , A. Nicuesa Guelbenzu , G. Pugliese , R. Sanchez-Ramirez , S. Schulze , E. R. Stanway , A. de Ugarte Postigo , D. Watson , R. A. M. J. Wijers , D. Xu

Spectroscopy and multiband photometry of the afterglow of intermediate duration gamma-ray burst 040924 and its host galaxy

We present optical photometry and spectroscopy of the afterglow and host galaxy of gamma-ray burst 040924. This GRB had a rather short duration of T90 ~2.4s, and a well sampled optical afterglow light curve. We aim to use this dataset to…

Astrophysics · Physics 2008-04-13 K. Wiersema , A. J. van der Horst , D. A. Kann , E. Rol , R. L. C. Starling , P. A. Curran , J. Gorosabel , A. J. Levan , J. P. U. Fynbo , A. de Ugarte Postigo , R. A. M. J. Wijers , A. J. Castro-Tirado , S. S. Guziy , A. Hornstrup , J. Hjorth , M. Jelinek , B. L. Jensen , M. Kidger , F. Martin-Luis , N. R. Tanvir , P. Tristram , P. M. Vreeswijk

GRB 060505: A possible short-duration gamma-ray burst in a star forming region at redshift of 0.09

On 2006 May 5, a four second duration, low energy, ~10^49 erg, Gamma-Ray Burst (GRB) was observed, spatially associated with a z=0.0894 galaxy. Here, we report the discovery of the GRB optical afterglow and observations of its environment…

Astrophysics · Physics 2010-05-12 E. O. Ofek , S. B. Cenko , A. Gal-Yam , D. B. Fox , E. Nakar , A. Rau , D. A. Frail , S. R. Kulkarni , P. A. Price , B. P. Schmidt , A. M. Soderberg , B. Peterson , E. Berger , K. Sharon , O. Shemmer , B. E. Penprase , R. A. Chevalier , P. J. Brown , D. N. Burrows , N. Gehrels , F. Harrison , S. T. Holland , V. Mangano , P. J. McCarthy , D. -S. Moon , J. A. Nousek , S. E. Persson , T. Piran , R. Sari

Optical Afterglows and IGM Attenuation

Because of their cosmological origin, gamma-ray burst (GRB) optical afterglows are attenuated when they pass intergalactic absorbers in the GRB line-of-sight. Without the knowledge of the number of absorbers and their physical properties,…

High Energy Astrophysical Phenomena · Physics 2012-06-07 J. Japelj , A. Gomboc , D. Kopač

The Star Formation Rate in the Reionization Era as Indicated by Gamma-ray Bursts

High-redshift gamma-ray bursts (GRBs) offer an extraordinary opportunity to study aspects of the early Universe, including the cosmic star formation rate (SFR). Motivated by the two recent highest-z GRBs, GRB 080913 at z = 6.7 and GRB…

Cosmology and Nongalactic Astrophysics · Physics 2011-02-11 Matthew D. Kistler , Hasan Yuksel , John F. Beacom , Andrew M. Hopkins , J. Stuart B. Wyithe

The Afterglow of GRB 130427A from 1 to 10^16 GHz

We present multiwavelength observations of the afterglow of GRB 130427A, the brightest (in total fluence) gamma-ray burst of the past 29 years. Optical spectroscopy from Gemini-North reveals the redshift of the GRB to be z=0.340, indicating…

High Energy Astrophysical Phenomena · Physics 2014-01-14 D. A. Perley , S. B. Cenko , A. Corsi , N. R. Tanvir , A. J. Levan , D. A. Kann , E. Sonbas , K. Wiersema , W. Zheng , X. -H. Zhao , J. -M. Bai , M. Bremer , A. J. Castro-Tirado , L. Chang , K. I. Clubb , D. Frail , A. Fruchter , E. Göğüş , J. Greiner , T. Güver , A. Horesh , A. V. Filippenko , S. Klose , J. Mao , A. N. Morgan , A. S. Pozanenko , S. Schmidl , B. Stecklum , M. Tanga , A. A. Volnova , A. E. Volvach , J. -G. Wang , J. -M. Winters , Y. -X. Xin

Photometry and spectroscopy of GRB 060526: A detailed study of the afterglow and host galaxy of a z=3.2 gamma-ray burst

Aims: With this paper we want to investigate the highly variable afterglow light curve and environment of gamma-ray burst (GRB) 060526 at $z=3.221$. Methods: We present one of the largest photometric datasets ever obtained for a GRB…

Astrophysics · Physics 2014-09-16 C. C. Thöne , D. A. Kann , G. Jóhannesson , J. H. Selj , A. O. Jaunsen , J. P. U. Fynbo , C. W. Akerlof , K. S. Baliyan , C. Bartolini , I. F. Bikmaev , J. S. Bloom , R. A. Burenin , B. E. Cobb , S. Covino , P. A. Curran , H. Dahle , A. Ferrero , S. Foley , J. French , A. S. Fruchter , S. Ganesh , J. F. Graham , G. Greco , A. Guarnieri , L. Hanlon , J. Hjorth , M. Ibrahimov , G. L. Israel , P. Jakobsson , M. Jelínek , B. L. Jensen , U. G. Jørgensen , I. M. Khamitov , T. S. Koch , A. J. Levan , D. Malesani , N. Masetti , S. Meehan , G. Melady , D. Nanni , J. Näränen , E. Pakstiene , M. N. Pavlinsky , D. A. Perley , A. Piccioni , G. Pizzichini , A. Pozanenko , P. W. A. Roming , W. Rujopakarn , V. Rumyantsev , E. S. Rykoff , D. Sharapov , D. Starr , R. A. Sunyaev , H. Swan , N. R. Tanvir , F. Terra , P. M. Vreeswijk , A. C. Wilson , S. A. Yost , F. Yuan

Low-Resolution Spectroscopy of Gamma-ray Burst Optical Afterglows: Biases in the Swift Sample and Characterization of the Absorbers

(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 all detected lines redward of Ly-alpha.…

Cosmology and Nongalactic Astrophysics · Physics 2009-12-01 J. P. U. Fynbo , P. Jakobsson , J. X. Prochaska , D. Malesani , C. Ledoux , A. de Ugarte Postigo , M. Nardini , P. M. Vreeswijk , K. Wiersema , J. Hjorth , J. Sollerman , H. -W. Chen , C. C. Thoene , G. Bjoernsson , J. S. Bloom , A. Castro-Tirado , L. Christensen , A. De Cia , A. S. Fruchter , J. U. Gorosabel , J. F. Graham , A. Jaunsen , B. L. Jensen , D. A. Kann , C. Kouveliotou , A. Levan , J. Maund , N. Masetti , B. Milvang-Jensen , E. Palazzi , D. A. Perley , E. Pian , E. Rol , P. Schady , R. Starling , N. Tanvir , D. J. Watson , D. Xu , T. Augusteijn , F. Grundahl , J. Telting , P. -O. Quirion

GRB 120521C at z~6 and the Properties of High-redshift GRBs

We present optical, near-infrared, and radio observations of the afterglow of GRB 120521C. By modeling the multi-wavelength dataset, we derive a photometric redshift of z~6.0, which we confirm with a low signal-to-noise ratio spectrum of…

High Energy Astrophysical Phenomena · Physics 2015-06-16 T. Laskar , E. Berger , N. Tanvir , B. Zauderer , R. Margutti , A. Levan , D. Perley , W. Fong , K. Wiersema , A. Cucchiara , K. Menten , M. Hrudkova

SkyHopper mission science case I: Identification of high redshift Gamma-Ray Bursts through space-based near-infrared afterglow observations

Long-duration gamma-ray burst (GRB) afterglow observations offer cutting-edge opportunities to characterise the star formation history of the Universe back to the epoch of reionisation, and to measure the chemical composition of…

High Energy Astrophysical Phenomena · Physics 2022-08-17 Matt Thomas , Michele Trenti , Jochen Greiner , Mike Skrutskie , Duncan A. Forbes , Sylvio Klose , Katherine J. Mack , Robert Mearns , Benjamin Metha , Gianpiero Tagliaferri , Nial Tanvir , Stan Skafidas

Probing Reionization with Quasar Spectra: the Impact of the Intrinsic Lyman-alpha Emission Line Shape Uncertainty

Arguably the best hope of understanding the tail end of the reionization of the intergalactic medium (IGM) at redshift z > 6 is through the detection and characterization of the Gunn-Peterson (GP) damping wing absorption of the IGM in…

Cosmology and Nongalactic Astrophysics · Physics 2010-01-25 Roban Hultman Kramer , Zoltan Haiman

Absorption in Gamma Ray Burst afterglows

We studied the X-ray and optical absorption properties of 13 Gamma Ray Burst (GRB) afterglows observed by BeppoSAX. We found that X-ray absorption in addition to the Galactic one along the line of sight is highly statistically significant…

Astrophysics · Physics 2009-11-10 G. Stratta , F. Fiore , L. A. Antonelli , L. Piro , M. De Pasquale

Rapid Response Mode observations of GRB 160203A: Looking for fine-structure line variability at z=3.52

Gamma-ray bursts are the most energetic known explosions. Despite fading rapidly, they allow to measure redshift and important properties of their host-galaxies. We report the photometric and spectroscopic study of GRB 160203A and its…

High Energy Astrophysical Phenomena · Physics 2024-09-25 G. Pugliese , A. Saccardi , V. D Elia , S. D. Vergani , K. E. Heintz , S. Savaglio , L. Kaper , A. de Ugarte Postigo , D. H. Hartmann , A. De Cia , S. Vejlgaard , J. P. U. Fynbo , L. Christensen , S. Campana , D. van Rest , J. Selsing , K. Wiersema , D. B. Malesani , S. Covino , D. Burgarella , M. De Pasquale , P. Jakobsson , J. Japelj , D. A. Kann , C. Kouveliotou , A. Rossi , N. R. Tanvir , C. C. Thoene , D. Xu

GRB 210704A: A Luminous Fast Blue Transient in a GRB Afterglow at $z = 2.34$

We present detailed, multi-wavelength analysis of GRB 210704A: a Fermi Gamma-ray Burst Monitor discovered and Fermi Large Area Telescope (LAT) detected gamma-ray burst (GRB). The burst is dominated by a short ($\approx 2$ s) pulse followed…

High Energy Astrophysical Phenomena · Physics 2026-04-17 Daniëlle L. A. Pieterse , Andrew J. Levan , Maria E. Ravasio , Jillian C. Rastinejad , Agnes P. C. van Hoof , Daniele B. Malesani , Nikhil Sarin , Gavin P. Lamb , Antonio Martin-Carrillo , Anya E. Nugent , Nial R. Tanvir , Peter G. Jonker , David Alexander Kann , José Feliciano Agüí Fernández , Edo Berger , Gregory Corcoran , Felice Cusano , Paolo D'Avanzo , Valerio D'Elia , Antonio de Ugarte Postigo , Dimple , Wen-fai Fong , Johan P. U. Fynbo , Luca Izzo , Elisabetta Maiorano , Andrea Melandri , Eliana Palazzi , Jonathan Quirola-Vásquez , Andrea Rossi , Alicia Rouco Escorial

The Rapidly Flaring Afterglow of the Very Bright and Energetic GRB 070125

We report on multi-wavelength observations, ranging from the X-ray to radio wave bands, of the IPN-localized gamma-ray burst GRB 070125. Spectroscopic observations reveal the presence of absorption lines due to O I, Si II, and C IV,…

Astrophysics · Physics 2009-11-13 Adria C. Updike , Joshua B. Haislip , Melissa C. Nysewander , Andrew S. Fruchter , D. Alexander Kann , Sylvio Klose , Peter A. Milne , G. Grant Williams , Weikang Zheng , Carl W. Hergenrother , Jason X. Prochaska , Jules P. Halpern , Nestor Mirabal , John R. Thorstensen , Alexander J. van der Horst , Rhaana L. C. Starling , Judith L. Racusin , David N. Burrows , N. P. M. Kuin , Peter W. A. Roming , Eric Bellm , Kevin Hurley , Weidong Li , Alexei V. Filippenko , Cullen Blake , Dan Starr , Emilio E. Falco , Warren R. Brown , Xinyu Dai , Jinsong Deng , Liping Xin , Yulei Qiu , Jianyan Wei , Yuji Urata , Domenico Nanni , Elisabetta Maiorano , Eliana Palazzi , Giuseppe Greco , Corrado Bartolini , Adriano Guarnieri , Adalberto Piccioni , Graziella Pizzichini , Federica Terra , Kuntal Misra , B. C. Bhatt , G. C. Anupama , X. Fan , L. Jiang , Ralph A. M. J. Wijers , Dan E. Reichart , Hala A. Eid , Ginger Bryngelson , Jason Puls , R. C. Goldthwaite , Dieter H. Hartmann

An Imaging and Spectroscopic Study of Four Strong MgII Absorbers Revealed By GRB060418

We present results from an imaging and spectroscopic study of four strong MgII absorbers of W(2796) >~ 1 Ang revealed by the afterglow of GRB060418 at z_GRB=1.491. These absorbers, at z=0.603,0.656,1.107 and z_GRB, exhibit large ion…

Cosmology and Nongalactic Astrophysics · Physics 2014-11-18 L. K. Pollack , H. -W. Chen , J. X. Prochaska , J. S. Bloom

Dust extinction for an unbiased sample of GRB afterglows

In this paper we compute rest-frame extinctions for the afterglows of a sample of gamma-ray bursts complete in redshift. The selection criteria of the sample are based on observational high-energy parameters of the prompt emission and…

High Energy Astrophysical Phenomena · Physics 2015-06-15 S. Covino , A. Melandri , R. Salvaterra , S. Campana , S. D. Vergani , M. G. Bernardini , P. D'Avanzo , V. D'Elia , D. Fugazza , G. Ghirlanda , G. Ghisellini , A. Gomboc , Z. P. Jin , T. Kruehler , D. Malesani , L. Nava , B. Sbarufatti , G. Tagliaferri

The First Positive Detection of Molecular Gas in a GRB Host Galaxy

We report on strong H2 and CO absorption from gas within the host galaxy of gamma-ray burst (GRB) 080607. Analysis of our Keck/LRIS afterglow spectrum reveals a very large HI column density (NHI = 10^22.70 cm^-2) and strong metal-line…

High Energy Astrophysical Phenomena · Physics 2009-11-13 J. X. Prochaska , Y. Sheffer , D. A. Perley , J. S. Bloom , L. A. Lopez , M. Dessauges-Zavadsky , H. -W. Chen , A. V. Filippenko , M. Ganeshalingam , W. Li , A. A. Miller , D. Starr