A Caltech Library Service

The sub-energetic big γ-ray burst GRB 031203 as a cosmic analogue to the nearby GRB 980425

Soderberg, A. M. and Kulkarni, S. R. and Berger, E. and Fox, D. W. and Sako, M. and Frail, D. A. and Gal-Yam, A. and Moon, D. S. and Cenko, S. B. and Yost, S. A. and Phillips, M. M. and Persson, S. E. and Freedman, W. L. and Wyatt, P. and Jayawardhana, R. and Paulson, D. (2004) The sub-energetic big γ-ray burst GRB 031203 as a cosmic analogue to the nearby GRB 980425. Nature, 430 (7000). pp. 648-650. ISSN 0028-0836.

[img] PDF - Submitted Version
See Usage Policy.


Use this Persistent URL to link to this item:


Over the six years since the discovery of the γ-ray burst GRB 980425, which was associated with the nearby (distance ~40 Mpc) supernova 1998bw, astronomers have debated fiercely the nature of this event. Relative to bursts located at cosmological distance (redshift z approximately 1), GRB 980425 was under-luminous in gamma-rays by three orders of magnitude. Radio calorimetry showed that the explosion was sub-energetic by a factor of 10. Here we report observations of the radio and X-ray afterglow of the recent GRB 031203 (refs 5–7), which has a redshift of z = 0.105. We demonstrate that it too is sub-energetic which, when taken together with the low gamma-ray luminosity, suggests that GRB 031203 is the first cosmic analogue to GRB 980425. We find no evidence that this event was a highly collimated explosion viewed off-axis. Like GRB 980425, GRB 031203 appears to be an intrinsically sub-energetic gamma-ray burst. Such sub-energetic events have faint afterglows. We expect intensive follow-up of faint bursts with smooth gamma-ray light curves (common to both GRB 031203 and 980425) to reveal a large population of such events.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper ReadCube access
Kulkarni, S. R.0000-0001-5390-8563
Berger, E.0000-0002-9392-9681
Fox, D. W.0000-0002-3714-672X
Gal-Yam, A.0000-0002-3653-5598
Moon, D. S.0000-0003-4200-5064
Cenko, S. B.0000-0003-1673-970X
Phillips, M. M.0000-0003-2734-0796
Freedman, W. L.0000-0003-3431-9135
Additional Information:© 2004 Nature Publishing Group. Received 25 March; accepted 15 June 2004. GRB research at Caltech is supported in part by NSF and NASA. We are indebted to S. Barthelmy and the GCN. The VLA is operated by the National Radio Astronomy Observatory, a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc. A.M.S. is supported by an NSF graduate research fellowship. A.G. acknowledges support by NASA through a Hubble fellowship grant.
Funding AgencyGrant Number
NSF Graduate Research FellowshipUNSPECIFIED
Issue or Number:7000
Record Number:CaltechAUTHORS:20150326-134720731
Persistent URL:
Official Citation:Soderberg, A. M., Kulkarni, S. R., Berger, E., Fox, D. W., Sako, M., Frail, D. A., . . . Paulson, D. (2004). The sub-energetic [gamma]-ray burst GRB 031203 as a cosmic analogue to the nearby GRB 980425. [10.1038/nature02757]. Nature, 430(7000), 648-650.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:56144
Deposited By: Jason Perez
Deposited On:27 Mar 2015 00:48
Last Modified:20 Nov 2019 21:54

Repository Staff Only: item control page