Sign on

SAO/NASA ADS Astronomy Abstract Service


· Find Similar Abstracts (with default settings below)
· Electronic Refereed Journal Article (HTML)
· Full Refereed Journal Article (PDF/Postscript)
· arXiv e-print (arXiv:astro-ph/0603426)
· On-line Data
· References in the article
· Citations to the Article (10) (Citation History)
· Refereed Citations to the Article
· SIMBAD Objects (6)
· NED Objects (1)
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
Swift Observations of GRB 050603: An Afterglow with a Steep Late-Time Decay Slope
Authors:
Grupe, Dirk; Brown, Peter J.; Cummings, Jay; Zhang, Bing; Retter, Alon; Burrows, David N.; Boyd, Patricia T.; Capalbi, Milvia; Gehrels, Neil; Holland, Stephen T.; Mészáros, Peter; Nousek, John A.; Kennea, Jamie A.; O'Brien, Paul; Osborne, Julian; Pagani, Claudio; Racusin, Judith L.; Roming, Peter; Schady, Patricia
Affiliation:
AA(Department of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Lab, University Park, PA 16802.), AB(Department of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Lab, University Park, PA 16802.), AC(NASA Goddard Space Flight Center, Greenbelt, MD 20771.), AD(Department of Physics, University of Nevada, Las Vegas, NV 89154.), AE(Department of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Lab, University Park, PA 16802.), AF(Department of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Lab, University Park, PA 16802.), AG(NASA Goddard Space Flight Center, Greenbelt, MD 20771.), AH(ASI Science Data Center, via G. Galilei, I-00044 Frascati, Rome, Italy.), AI(NASA Goddard Space Flight Center, Greenbelt, MD 20771.), AJ(NASA Goddard Space Flight Center, Greenbelt, MD 20771.; Universities Space Research Association, Seabrook, MD 20706.), AK(Department of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Lab, University Park, PA 16802.; Department of Physics, Pennsylvania State University, University Park, PA 16802.), AL(Department of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Lab, University Park, PA 16802.), AM(Department of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Lab, University Park, PA 16802.), AN(Department of Physics and Astronomy, University of Leicester, Leicester LE1 7R, UK.), AO(Department of Physics and Astronomy, University of Leicester, Leicester LE1 7R, UK.), AP(Department of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Lab, University Park, PA 16802.), AQ(Department of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Lab, University Park, PA 16802.), AR(Department of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Lab, University Park, PA 16802.), AS(Department of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Lab, University Park, PA 16802.; Mullard Space Science Laboratory, Holmbury St. Mary, Dorking, Surrey RH5 6NT, UK.)
Publication:
The Astrophysical Journal, Volume 645, Issue 1, pp. 464-469. (ApJ Homepage)
Publication Date:
07/2006
Origin:
UCP
ApJ Keywords:
Gamma Rays: Bursts
DOI:
10.1086/504315
Bibliographic Code:
2006ApJ...645..464G

Abstract

We report the results of Swift observations of the gamma-ray burst GRB 050603. With a V magnitude V=18.2 about 10 hr after the burst, the optical afterglow was the brightest thus far detected by Swift and one of the brightest optical afterglows ever seen. The Burst Alert Telescope (BAT) light curves show three fast-rise exponential-decay spikes with T90=12 s and a fluence of 7.6×10-6 ergs cm-2 in the 15-150 keV band. With Eγ,iso=1.26×1054 ergs, it was also one of the most energetic bursts of all times. The Swift spacecraft began observation of the afterglow with the narrow-field instruments about 10 hr after the detection of the burst. The burst was bright enough to be detected by the Swift UV/Optical telescope (UVOT) for almost 3 days and by the X-Ray Telescope (XRT) for a week after the burst. The X-ray light curve shows a rapidly fading afterglow with a decay index α=1.76+0.15-0.07. The X-ray energy spectral index was βX=0.71+/-0.10 with the column density in agreement with the Galactic value. The spectral analysis does not show an obvious change in the X-ray spectral slope over time. The optical UVOT light curve decays with a slope of α=1.8+/-0.2. The steepness and the similarity of the optical and X-ray decay rates suggest that the afterglow was observed after the jet break. We estimate a jet opening angle of about 1°-2°.
Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)

   

Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints