Correlated radio-X-ray variability of galactic black holes: A radio-X-ray flare in cygnus X-1

被引：24

作者：

Wilms, Jorn

Pottschmidt, Katja

Pooley, Guy G.

Markoff, Sera

Nowak, Michael A.

Kreykenbohm, Ingo

Rothschild, Richard E.

机构：

[1] Univ Erlangen Nurnberg, Dr Karl Remeis Observ, D-96049 Bamberg, Germany

[2] Univ Calif San Diego, Ctr Astrophys & Space Sci, La Jolla, CA 92093 USA

[3] Univ Cambridge, Cavendish Lab, Mullard Radio Astron Observ, Cambridge CB3 0HE, England

[4] Univ Amsterdam, Astron Inst Anton Pannekoek, NL-1098 SJ Amsterdam, Netherlands

[5] MIT, Kavli Inst Astrophys & Space Res, Cambridge, MA 02139 USA

[6] Chandra XRay Ctr, Cambridge, MA 02139 USA

[7] Inst Astron Astrophys Astron, D-72076 Tubingen, Germany

[8] INTEGRAL Sci Data Ctr, CH-1290 Versoix, Switzerland

来源：

ASTROPHYSICAL JOURNAL | 2007年 / 663卷 / 02期

关键词：

accretion; ccretion disks; black hole physics; X-rays : binaries; X-rays : stars;

D O I：

10.1086/520508

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report on the first detection of a quasi-simultaneous radio-X-ray flare of Cygnus X-1. The detection was made on 2005 April 16 with pointed observations by the RXTE and the Ryle telescope, during a phase where the black hole candidate was close to a transition from its soft state to its hard state. The radio flare lagged the X-rays by similar to 7 minutes, peaking at 3:20 hr barycentric time (TDB 2,453,476.63864). We discuss this lag in the context of models explaining such flaring events as the ejection of electron bubbles emitting synchrotron radiation.

引用

页码：L97 / L100

页数：4

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