A Rapid Change in X-Ray Variability and a Jet Ejection in the Black Hole Transient MAXI J1820+070

被引：61

作者：

Homan, Jeroen ^{[1
,2
]}

Bright, Joe ^{[3
]}

Motta, Sara E. ^{[3
]}

Altamirano, Diego ^{[4
]}

Arzoumanian, Zaven ^{[5
]}

Basak, Arkadip ^{[6
]}

Belloni, Tomaso M. ^{[7
]}

Cackett, Edward M. ^{[8
]}

Fender, Rob ^{[3
]}

Gendreau, Keith C. ^{[5
]}

Kara, Erin ^{[9
]}

Pasham, Dheeraj R. ^{[9
]}

Remillard, Ronald A. ^{[9
]}

Steiner, James F. ^{[10
]}

Stevens, Abigail L. ^{[11
,12
]}

Uttley, Phil ^{[6
]}

机构：

[1] Eureka Sci Inc, 2452 Delmer St, Oakland, CA 94602 USA

[2] SRON Netherlands Inst Space Res, SRON, Sorbonnelaan 2, NL-3584 CA Utrecht, Netherlands

[3] Univ Oxford, Dept Phys, Astrophys, Denys Wilkinson Bldg,Keble Rd, Oxford OX1 3RH, England

[4] Univ Southampton, Sch Phys & Astron, Southampton SO17 1BJ, Hants, England

[5] NASA, Goddard Space Flight Ctr, Astrophys Sci Div, Xray Astrophys Lab, Greenbelt, MD 20771 USA

[6] Univ Amsterdam, Anton Pannekoek Inst, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands

[7] Osserv Astron Brera, INAF, Via E Bianchi 46, I-23807 Merate, Italy

[8] Wayne State Univ, Dept Phys & Astron, 666 W Hancock St, Detroit, MI 48201 USA

[9] MIT, Kavli Inst Astrophys & Space Res, 70 Vassar St, Cambridge, MA 02139 USA

[10] Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA

[11] Michigan State Univ, Dept Phys & Astron, 567 Wilson Rd, E Lansing, MI 48824 USA

[12] Univ Michigan, Dept Astron, 1085 South Univ Ave, Ann Arbor, MI 48109 USA

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2020年 / 891卷 / 02期

基金：

英国科学技术设施理事会;

关键词：

Low-mass X-ray binary stars; X-ray transient sources; X-ray astronomy; Radio jets; Timing variation methods; Accretion; QUASI-PERIODIC OSCILLATIONS; OUTBURST; MODEL;

D O I：

10.3847/2041-8213/ab7932

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present Neutron Star Interior Composition Explorer X-ray and Arcminute Microkelvin Imager Large Array radio observations of a rapid hard-to-soft state transition in the black hole X-ray transient MAXI J1820+070. During the transition from the hard state to the soft state a switch between two particular types of quasiperiodic oscillations (QPOs) was seen in the X-ray power density spectra, from type-C to type-B, along with a drop in the strength of the broadband X-ray variability and a brief flare in the 7-12 keV band. Soon after this switch (similar to 2-2.5 hr) a strong radio flare was observed that corresponded to the launch of superluminal ejecta. Although hints of a connection between QPO transitions and radio flares have been seen in other black hole X-ray transients, our observations constitute the strongest observational evidence to date for a link between the appearance of type-B QPOs and the launch of discrete jet ejections.

引用

页数：6

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