Observation of X-ray lines from a gamma-ray burst (GRB991216):: Evidence of moving ejecta from the progenitor

被引：248
作者：
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, RM
Marshall, F
Murakami, T
Sokolov, VV
Takeshima, T
Yoshida, A
机构：
[1] CNR, Ist Astrofis Spaziale, I-00133 Rome, Italy
[2] Penn State Univ, Dept Astron & Astrophys, Davey Lab 525, University Pk, PA 16802 USA
[3] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA
[4] Univ Roma Tre, Dept Phys, I-00146 Rome, Italy
[5] MIT, Cambridge, MA 02139 USA
[6] Natl Radio Astron Observ, Socorro, NM 87801 USA
[7] CNR, Ist Tecnol & Studio Radiaz Extraterr, I-40129 Bologna, Italy
[8] Columbia Univ, Dept Astrophys, New York, NY 10027 USA
[9] SRON, NL-3584 CA Utrecht, Netherlands
[10] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA
[11] RIKEN, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan
[12] Univ Alabama, NASA, George C Marshall Space Flight Ctr, Huntsville, AL 35899 USA
[13] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA
[14] Inst Space & Astronaut Sci, Kanagawa 2298510, Japan
[15] Russian Acad Sci, Special Astrophys Observ, Nizhnii Arkhyz 369167, Karachaevo Cher, Russia
[16] NASDA, Natl Space Dev Agcy Japan, Minato Ku, Tokyo 10560, Japan
来源：
SCIENCE | 2000年 / 290卷 / 5493期
关键词：
D O I：
10.1126/science.290.5493.955
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
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 Ly(alpha), 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 similar to0.01 of the mass of the sun at a velocity similar to0.1 of the speed of light, probably by a supernova explosion.
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页码：955 / 958
页数：4
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