Journal ArticleDOI
Gamma-Ray Burst Afterglows as Probes of Environment and Blast Wave Physics. I. Absorption by Host-Galaxy Gas and Dust
R. L. C. Starling,R. L. C. Starling,Ralph A. M. J. Wijers,Klaas Wiersema,Evert Rol,P. A. Curran,Chryssa Kouveliotou,A. J. van der Horst,M. H. M. Heemskerk +8 more
TLDR
In this paper, the authors used a new approach to obtain limits on the absorbing columns toward an initial sample of 10 long gamma-ray bursts observed with BeppoSAX and selected on the basis of their good optical and near-infrared (NIR) coverage, from simultaneous fits to NIR, optical, and X-ray afterglow data, in count space and including the effects of metallicity.Abstract:
We use a new approach to obtain limits on the absorbing columns toward an initial sample of 10 long gamma-ray bursts observed with BeppoSAX and selected on the basis of their good optical and near-infrared (NIR) coverage, from simultaneous fits to NIR, optical, and X-ray afterglow data, in count space and including the effects of metallicity. In no cases is a Milky Way-like (MW) extinction preferred when testing MW, LMC, and SMC extinction laws. The 2175 A bump would in principle be detectable in all these afterglows, but is not present in the data. An SMC-like gas-to-dust ratio or lower value can be ruled out for four of the hosts analyzed here (assuming SMC metallicity and extinction law), while the remainder of the sample have too large an error to discriminate. We provide a more accurate estimate of the line-of-sight extinction and improve on the uncertainties for the majority of the extinction measurements made in previous studies of this sample. We discuss this method for determining extinction values in comparison with the most commonly employed existing methods.read more
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Journal ArticleDOI
The Afterglows of Swift-era Gamma-ray Bursts. I. Comparing pre-Swift and Swift-era Long/Soft (Type II) GRB Optical Afterglows
David Alexander Kann,Sylvio Klose,Bing Zhang,D. B. Malesani,Ehud Nakar,Ehud Nakar,A. Pozanenko,A. C. Wilson,Nathaniel R. Butler,Pall Jakobsson,Pall Jakobsson,Steve Schulze,Maksim V. Andreev,L. A. Antonelli,I. F. Bikmaev,V. Biryukov,Markus Böttcher,R. A. Burenin,J. M. Castro Cerón,J. M. Castro Cerón,A. J. Castro-Tirado,G. Chincarini,G. Chincarini,B. E. Cobb,B. E. Cobb,Stefano Covino,P. D'Avanzo,Valerio D'Elia,M. Della Valle,M. Della Valle,A. de Ugarte Postigo,Yu. S. Efimov,P. Ferrero,Dino Fugazza,Johan P. U. Fynbo,M. Gålfalk,F. Grundahl,Javier Gorosabel,S. Gupta,Sergei Guziy,B. M. Hafizov,Jens Hjorth,K. Holhjem,Mansur Ibrahimov,Myungshin Im,G. L. Israel,M. Jeĺinek,B. L. Jensen,R. Karimov,Irek Khamitov,Ü. Kızıloǧlu,E. Klunko,Petr Kubánek,Alexander Kutyrev,Peter Laursen,Andrew J. Levan,Filippo Mannucci,C. M. Martin,A. Mescheryakov,Nestor Mirabal,Jay P. Norris,J. E. Ovaldsen,D. Paraficz,Elena P. Pavlenko,Silvia Piranomonte,Andrea Rossi,Vasilij Rumyantsev,R. Salinas,A. Sergeev,D. Sharapov,Jesper Sollerman,Jesper Sollerman,Bringfried Stecklum,Luigi Stella,Gianpiero Tagliaferri,Nial R. Tanvir,J. Telting,Vincenzo Testa,Adria C. Updike,A. Volnova,Darach Watson,Klaas Wiersema,Klaas Wiersema,Dong Xu +83 more
TL;DR: The first indications of a class of long GRBs are presented, which form a bridge between the typical high-luminosity, high-redshift events and nearby low- luminosity events (which are also associated with spectroscopic supernovae) in terms of energetics and observed redshift distribution, indicating a continuous distribution overall.
Journal ArticleDOI
Swift Observations of GRB 070110: An Extraordinary X-Ray Afterglow Powered by the Central Engine
Eleonora Troja,Eleonora Troja,Eleonora Troja,Gaspare Cusumano,P. T. O'Brien,Bing Zhang,B. Sbarufatti,Vanessa Mangano,Richard Willingale,G. Chincarini,G. Chincarini,J. P. Osborne,Frank Marshall,David N. Burrows,Sergio Campana,Neil Gehrels,C. Guidorzi,C. Guidorzi,Hans A. Krimm,Hans A. Krimm,V. La Parola,En-Wei Liang,En-Wei Liang,Teresa Mineo,Alberto Moretti,K. L. Page,P. Romano,P. Romano,Gianpiero Tagliaferri,Bin-Bin Zhang,Bin-Bin Zhang,M. J. Page,Patricia Schady +32 more
TL;DR: In this paper, a detailed analysis of Swift multiwavelength observations of GRB 070110 and its remarkable afterglow is presented, showing that the early X-ray light curve, interpreted as the tail of the prompt emission, displays a spectral evolution already seen in other gamma-ray bursts.
Journal ArticleDOI
The 2175 Å Dust Feature in a Gamma-Ray Burst Afterglow at Redshift 2.45
Thomas Krühler,A. Kupcu Yoldas,Jochen Greiner,C. Clemens,Sheila McBreen,N. Primak,Sandra Savaglio,A. Yoldas,G. P. Szokoly,S. Klose +9 more
TL;DR: In this article, optical and near-infrared photometry of the afterglow of the long gamma-ray burst (GRB) 070802 at redshift 245 obtained with the ESO/MPI 22 m telescope equipped with the multichannel imager GROND Follow-up observations in g'r'i'z' and JHKS bands started at ~17 minutes and extended up to 28 hr postburst.
Journal ArticleDOI
The SEDs and host galaxies of the dustiest GRB afterglows
Thomas Krühler,Jochen Greiner,Patricia Schady,Sandra Savaglio,P. Afonso,C. Clemens,J. Elliot,R. Filgas,David Gruber,D. A. Kann,S. Klose,A. Kupcu-Yoldas,Sheila McBreen,F. Olivares,D. Pierini,Arne Rau,Andrea Rossi,Marco Nardini,A. Nicuesa Guelbenzu,V. Sudilovsky,Adria C. Updike,Adria C. Updike +21 more
TL;DR: In this article, afterglow and host observations for a sample of bursts that are exemplary of previously missed ones because of high visual extinction (A(sub v) (Sup GRB) approx > 1 mag) along the sight-line are presented.
Journal ArticleDOI
A radio-selected sample of gamma-ray burst afterglows
Poonam Chandra,Dale A. Frail +1 more
TL;DR: In this paper, a catalog of radio afterglow observations of gamma-ray bursts (GRBs) over a 14-year period from 1997 to 2011 was presented, with the majority of data taken at 8.5 GHz frequency band (1539 measurements).
References
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TL;DR: In this article, a reprocessed composite of the COBE/DIRBE and IRAS/ISSA maps, with the zodiacal foreground and confirmed point sources removed, is presented.
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