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An origin for short...
An origin for short gamma-ray bursts unassociated with current star formation
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Barthelmy, S D (author)
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Chincarini, G (author)
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Burrows, D N (author)
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Gehrels, N (author)
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Covino, S (author)
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Moretti, A (author)
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Romano, P (author)
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O'Brien, P T (author)
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Sarazin, C L (author)
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Kouveliotou, C (author)
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Goad, M (author)
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Vaughan, S (author)
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Tagliaferri, G (author)
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Zhang, B (author)
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Antonelli, L A (author)
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Campana, S (author)
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Cummings, J R (author)
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D'Avanzo, P (author)
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- Davies, Melvyn B (author)
- Lund University,Lunds universitet,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science
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Giommi, P (author)
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Grupe, D (author)
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Kaneko, Y (author)
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Kennea, J A (author)
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King, A (author)
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Kobayashi, S (author)
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Melandri, A (author)
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Meszaros, P (author)
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Nousek, J A (author)
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Patel, S (author)
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Sakamoto, T (author)
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Wijers, R A M J (author)
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(creator_code:org_t)
- 2005-12-14
- 2005
- English.
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In: Nature. - : Springer Science and Business Media LLC. - 0028-0836 .- 1476-4687. ; 438, s. 994-996
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Abstract
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- Two short (< 2 s) gamma-ray bursts (GRBs) have recently been localized(1-4) and fading afterglow counterparts detected(2-4). The combination of these two results left unclear the nature of the host galaxies of the bursts, because one was a star-forming dwarf, while the other was probably an elliptical galaxy. Here we report the X-ray localization of a short burst (GRB 050724) with unusual gamma-ray and X-ray properties. The X-ray afterglow lies off the centre of an elliptical galaxy at a redshift of z = 0.258 (ref. 5), coincident with the position determined by ground-based optical and radio observations(6-8). The low level of star formation typical for elliptical galaxies makes it unlikely that the burst originated in a supernova explosion. A supernova origin was also ruled out for GRB 050709 ( refs 3, 31), even though that burst took place in a galaxy with current star formation. The isotropic energy for the short bursts is 2 - 3 orders of magnitude lower than that for the long bursts. Our results therefore suggest that an alternative source of bursts - the coalescence of binary systems of neutron stars or a neutron star-black hole pair - are the progenitors of short bursts.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
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- ref (subject category)
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Nature
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- By the author/editor
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Barthelmy, S D
-
Chincarini, G
-
Burrows, D N
-
Gehrels, N
-
Covino, S
-
Moretti, A
-
show more...
-
Romano, P
-
O'Brien, P T
-
Sarazin, C L
-
Kouveliotou, C
-
Goad, M
-
Vaughan, S
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Tagliaferri, G
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Zhang, B
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Antonelli, L A
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Campana, S
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Cummings, J R
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D'Avanzo, P
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Davies, Melvyn B
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Giommi, P
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Grupe, D
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Kaneko, Y
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Kennea, J A
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King, A
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Kobayashi, S
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Melandri, A
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Meszaros, P
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Nousek, J A
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Patel, S
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Sakamoto, T
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Wijers, R A M J
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show less...
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Lund University