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.

引用

页码：955 / 958

页数：4

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