An origin for short γ-ray bursts unassociated with current star formation

S. D. Barthelmy (), G. Chincarini, D. N. Burrows, N. Gehrels, S. Covino, A. Moretti, P. Romano, P. T. O'Brien, C. L. Sarazin, C. Kouveliotou, M. Goad, S. Vaughan, G. Tagliaferri, B. Zhang, L. A. Antonelli, S. Campana, J. R. Cummings, P. D'Avanzo, M. B. Davies, P. Giommi, D. Grupe, Y. Kaneko, J. A. Kennea, A. King, S. Kobayashi, A. Melandri, P. Meszaros, J. A. Nousek, S. Patel, T. Sakamoto and R. A. M. J. Wijers
Additional contact information
S. D. Barthelmy: NASA/Goddard Space Flight Center
G. Chincarini: INAF—Osservatorio Astronomico di Brera
D. N. Burrows: Penn State University
N. Gehrels: NASA/Goddard Space Flight Center
S. Covino: INAF—Osservatorio Astronomico di Brera
A. Moretti: INAF—Osservatorio Astronomico di Brera
P. Romano: INAF—Osservatorio Astronomico di Brera
P. T. O'Brien: University of Leicester
C. L. Sarazin: University of Virginia
C. Kouveliotou: NASA/Marshall Space Flight Center, NSSTC
M. Goad: University of Leicester
S. Vaughan: University of Leicester
G. Tagliaferri: INAF—Osservatorio Astronomico di Brera
B. Zhang: University of Nevada, Las Vegas
L. A. Antonelli: Osservatorio Astronomico di Roma
S. Campana: INAF—Osservatorio Astronomico di Brera
J. R. Cummings: NASA/Goddard Space Flight Center
P. D'Avanzo: INAF—Osservatorio Astronomico di Brera
M. B. Davies: Lund Observatory
P. Giommi: ASI Science Data Center
D. Grupe: Penn State University
Y. Kaneko: Universities Space Research Association, NSSTC
J. A. Kennea: Penn State University
A. King: University of Leicester
S. Kobayashi: Penn State University
A. Melandri: Osservatorio Astronomico di Roma
P. Meszaros: Penn State University
J. A. Nousek: Penn State University
S. Patel: Universities Space Research Association, NSSTC
T. Sakamoto: NASA/Goddard Space Flight Center
R. A. M. J. Wijers: University of Amsterdam

Nature, 2005, vol. 438, issue 7070, 994-996

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/nature04392

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