Evidence for a relativistic iron line in GRS 1915+105

被引：63

作者：

Martocchia, A

Matt, G

Karas, V

Belloni, T

Feroci, M

机构：

[1] Univ Roma Tre, Dipartimento Fis, I-00146 Rome, Italy

[2] Charles Univ, Inst Astron, Fac Math & Phys, CZ-18000 Prague, Czech Republic

[3] Osserv Astron Brera, I-23807 Merate, Italy

[4] CNR, IAS, Area Ric Tor Vergata, I-00133 Rome, Italy

来源：

ASTRONOMY & ASTROPHYSICS | 2002年 / 387卷 / 01期

关键词：

black hole physics; relativity; line : formation; line : profiles; X-rays : individuals : GRS 1915+105;

D O I：

10.1051/0004-6361:20020359

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report on the discovery of a relativistic iron Kalpha fluorescent emission line in the BeppoSAX spectrum of the microquasar GRS 1915+105, taken on April 19, 1998, when the line was unusually intense. The feature is broad and skewed, clearly indicating emission from the innermost regions of the accretion disc. The inner emitting orbit is larger than the innermost stable orbit, even in Schwarzschild metric: thus, a non-zero BH spin is not required by these data.

引用

页码：215 / 221

页数：7

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