The afterglow and elliptical host galaxy of the short γ-ray burst GRB 050724

E. Berger (), P. A. Price, S. B. Cenko, A. Gal-Yam, A. M. Soderberg, M. Kasliwal, D. C. Leonard, P. B. Cameron, D. A. Frail, S. R. Kulkarni, D. C. Murphy, W. Krzeminski, T. Piran, B. L. Lee, K. C. Roth, D.-S. Moon, D. B. Fox, F. A. Harrison, S. E. Persson, B. P. Schmidt, B. E. Penprase, J. Rich, B. A. Peterson and L. L. Cowie
Additional contact information
E. Berger: Carnegie Observatories
P. A. Price: University of Hawaii
S. B. Cenko: Space Radiation Laboratory
A. Gal-Yam: California Institute of Technology
A. M. Soderberg: California Institute of Technology
M. Kasliwal: California Institute of Technology
D. C. Leonard: California Institute of Technology
P. B. Cameron: California Institute of Technology
D. A. Frail: National Radio Astronomy Observatory
S. R. Kulkarni: California Institute of Technology
D. C. Murphy: Carnegie Observatories
W. Krzeminski: Carnegie Observatories
T. Piran: Hebrew University
B. L. Lee: University of Toronto
K. C. Roth: Gemini Observatory
D.-S. Moon: Space Radiation Laboratory
D. B. Fox: California Institute of Technology
F. A. Harrison: Space Radiation Laboratory
S. E. Persson: Carnegie Observatories
B. P. Schmidt: RSAA, ANU, Mt Stromlo Observatory
B. E. Penprase: Pomona College Department of Physics and Astronomy
J. Rich: RSAA, ANU, Mt Stromlo Observatory
B. A. Peterson: RSAA, ANU, Mt Stromlo Observatory
L. L. Cowie: University of Hawaii

Nature, 2005, vol. 438, issue 7070, 988-990

Abstract: Hard evidence Gamma-ray bursts (GRBs) are either ‘long and soft’, or ‘short and hard’. It is now clear that the long-duration type are caused by explosions of massive stars in distant star-forming galaxies. Only in recent months, with the Swift satellite latching onto bursts as soon as they happen, has it been possible to collect data on short bursts that may lead to similar certainty as to their cause. GRB 050724 burst onto the scene on 24 July, and has all the properties needed to solve the mystery of short GRBs. The new evidence supports the merging compact object model of short GRBs, involving either a neutron star–neutron star merger, or a neutron star–black hole binary system as progenitor.

Date: 2005
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DOI: 10.1038/nature04238

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