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Early optical emission from the γ-ray burst of 4 October 2002

Fox, D. W. and Yost, S. and Kulkarni, S. R. and Torii, K. and Kato, T and Yamaoka, H. and Sako, M. and Harrison, F. A. and Sari, R. and Price, P. A. and Berger, E. and Soderberg, A. M. and Djorgovski, S. G. and Barth, A. J. and Pravdo, S. H. and Frail, D. A. and Gal-Yam, A. and Lipkin, Y. and Mauch, T. and Harrison, C. and Buttery, H. (2003) Early optical emission from the γ-ray burst of 4 October 2002. Nature, 422 (6929). pp. 284-286. ISSN 0028-0836. doi:10.1038/nature01504.

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Observations of the long-lived emission—or 'afterglow'—of long-duration gamma-ray bursts place them at cosmological distances, but the origin of these energetic explosions remains a mystery. Observations of optical emission contemporaneous with the burst of gamma-rays should provide insight into the details of the explosion, as well as into the structure of the surrounding environment. One bright optical flash was detected during a burst, but other efforts have produced negative results. Here we report the discovery of the optical counterpart of GRB021004 only 193 seconds after the event. The initial decline is unexpectedly slow and requires varying energy content in the y-ray burst blastwave over the course of the first hour. Further analysis of the X-ray and optical afterglow suggests additional energy variations over the first few days.

Item Type:Article
Related URLs:
URLURL TypeDescription ReadCube access
Fox, D. W.0000-0002-3714-672X
Kulkarni, S. R.0000-0001-5390-8563
Harrison, F. A.0000-0003-2992-8024
Sari, R.0000-0002-1084-3656
Berger, E.0000-0002-9392-9681
Djorgovski, S. G.0000-0002-0603-3087
Barth, A. J.0000-0002-3026-0562
Gal-Yam, A.0000-0002-3653-5598
Additional Information:© 2003 Nature Publishing Group. Received 12 December 2002; Accepted 19 February 2003. We thank D. L. Kaplan and C. Trujillo for assistance with supporting observations at Palomar and R. D. Blandford for discussions. The results presented in this paper are based on data obtained using the NASA-JPL CCD camera at the Oschin Telescope, Palomar Observatory, California Institute of Technology (Caltech). The research was performed in part by the Jet Propulsion Laboratory, Caltech, under contract with the National Aeronautics and Space Administration (NASA). γ-ray burst research at Caltech is supported in part by funds from NSF and NASA.
Group:UNSPECIFIED, Division of Geological and Planetary Sciences
Funding AgencyGrant Number
Issue or Number:6929
Record Number:CaltechAUTHORS:20150401-121318655
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Official Citation:Early optical emission from the bold y-ray burst of 4 October 2002 p284 D. W. Fox, S. Yost, S. R. Kulkarni, K. Torii, T. Kato, H. Yamaoka, M. Sako, F. A. Harrison, R. Sari, P. A. Price, E. Berger, A. M. Soderberg, S. G. Djorgovski, A. J. Barth, S. H. Pravdo, D. A. Frail, A. Gal-Yam, Y. Lipkin, T. Mauch, C. Harrison and H. Buttery doi:10.1038/nature01504
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:56290
Deposited By: Ruth Sustaita
Deposited On:01 Apr 2015 21:20
Last Modified:10 Nov 2021 20:57

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