Observation of X-ray Lines from a Gamma-Ray Burst (GRB991216): Evidence of Moving Ejecta from the Progenitor
著者
和文:
Piro, L.,
Garmire, G.,
Garcia, M.,
Stratta, G.,
Costa, E.,
Feroci, M.,
Mészáros, P.,
Vietri, M.,
Bradt, H.,
Frail, D.,
Frontera, F.,
Halpern, J.,
Heise, J.,
Hurley, K.,
河合 誠之,
Kippen, R. M.,
Marshall, F.,
Murakami, T.,
Sokolov, V. V.,
Takeshima, T.,
Yoshida, A..
英文:
Piro, L.,
Garmire, G.,
Garcia, M.,
Stratta, G.,
Costa, E.,
Feroci, M.,
Mészáros, P.,
Vietri, M.,
Bradt, H.,
Frail, D.,
Frontera, F.,
Halpern, J.,
Heise, J.,
Hurley, K.,
Kawai, N.,
Kippen, R. M.,
Marshall, F.,
Murakami, T.,
Sokolov, V. V.,
Takeshima, T.,
Yoshida, A..
言語
English
掲載誌/書名
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英文:
Science
巻, 号, ページ
Vol. 290
pp. 955-958
出版年月
2000年11月
出版者
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英文:
会議名称
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英文:
開催地
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英文:
アブストラクト
We report on the discovery of two emission features observed in the x-ray spectrum of the afterglow of the gamma-ray burst (GRB) of 16 December 1999 by the Chandra X-ray Observatory. These features are identified with the Lyα line and the narrow recombination continuum by hydrogenic ions of iron at a redshift z = 1.00 +/- 0.02, providing an unambiguous measurement of the distance of a GRB. Line width and intensity imply that the progenitor of the GRB was a massive star system that ejected, before the GRB event, a quantity of iron ~0.01 of the mass of the sun at a velocity ~0.1 of the speed of light, probably by a supernova explosion.
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