Unveiling recurrent jets of the ULX Holmberg II X-1: evidence for a massive stellar-mass black hole?

被引：43

作者：

Cseh, D. ^{[1
]}

Kaaret, P. ^{[2
]}

Corbel, S. ^{[3
]}

Grise, F. ^{[4
,5
]}

Lang, C. ^{[2
]}

Kording, E. ^{[1
]}

Falcke, H. ^{[1
]}

Jonker, P. G. ^{[1
,6
,7
]}

Miller-Jones, J. C. A. ^{[8
]}

Farrell, S. ^{[9
]}

Yang, Y. J. ^{[10
]}

Paragi, Z. ^{[11
]}

Frey, S. ^{[12
]}

机构：

[1] Radboud Univ Nijmegen, Dept Astrophys IMAPP, NL-6500 GL Nijmegen, Netherlands

[2] Univ Iowa, Dept Phys & Astron, Iowa City, IA 52240 USA

[3] Lab AIM CEA IRFU CNRS INSU Univ Paris Diderot, CEA DSM IRFU SAp, F-91191 Gif Sur Yvette, France

[4] Inst Astrofis Canarias, E-38200 Tenerife, Spain

[5] Univ La Laguna, Dept Astrofis, E-38271 Tenerife, Spain

[6] SRON Netherlands Inst Space Res, SRON, NL-3584 CA Utrecht, Netherlands

[7] Harvard Smithonian Ctr Astrophys, Cambridge, MA 02138 USA

[8] Curtin Univ, Int Ctr Radio Astron Res, Perth, WA 6845, Australia

[9] Univ Sydney, Sydney Inst Astron, Sch Phys, Sydney, NSW 2006, Australia

[10] Univ Amsterdam, Astron Inst, NL-1090 GE Amsterdam, Netherlands

[11] Joint Inst VLBI Europe, NL-7990 AA Dwingeloo, Netherlands

[12] FOMI Satellite Geodet Observ, H-1592 Budapest, Hungary

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2014年 / 439卷 / 01期

基金：

匈牙利科学研究基金会; 澳大利亚研究理事会;

关键词：

accretion; accretion discs; black hole physics; X-rays: binaries; X-RAY SOURCE; ACTIVE GALACTIC NUCLEI; RADIO OBSERVATIONS; HIGH-LUMINOSITY; GRS 1915+105; XMM-NEWTON; GALAXY; POWER; KINEMATICS; NEBULA;

D O I：

10.1093/mnrasl/slt166

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report on the discovery of an apparent triple radio structure hidden inside the radio bubble of the ultraluminous X-ray source Holmberg II X-1. The morphology is consistent with a collimated jet structure, which is observed to emit optically thin synchrotron radiation. The central component has a steep radio spectrum and is brighter than the outer components indicating a renewed radio activity. We estimate a minimum time-averaged jet power of similar to 2 x 10(39) erg s(-1) that is associated with a time-averaged isotropic X-ray luminosity of at least 4 x 10(39) erg s(-1). Our results suggest that Holmberg II X-1 is powered by a black hole of M-BH >= 25 M-circle dot, that is inferred to be accreting at a high Eddington rate with intermittent radio activity.

引用

页码：L1 / L5

页数：5

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