Properties of the transient X-ray pulsar Swift J1816.7-1613 and its optical companion

被引：10

作者：

Nabizadeh, Armin ^{[1
]}

Tsygankov, Sergey S. ^{[1
,2
]}

Karasev, Dmitrij I. ^{[2
]}

Monkkonen, Juhani ^{[1
]}

Lutovinov, Alexander A. ^{[2
]}

Nagirner, Dmitrij I. ^{[5
]}

Poutanen, Juri ^{[1
,2
,3
,4
]}

机构：

[1] Univ Turku, Dept Phys & Astron, Turku 20014, Finland

[2] Russian Acad Sci, Space Res Inst, Profsoyuznaya Str 84-32, Moscow 117997, Russia

[3] KTH Royal Inst Technol, NORDITA, Roslagstullsbacken 23, S-10691 Stockholm, Sweden

[4] Stockholm Univ, Roslagstullsbacken 23, S-10691 Stockholm, Sweden

[5] St Petersburg State Univ, Sobolev Astron Inst, St Petersburg 198504, Russia

来源：

ASTRONOMY & ASTROPHYSICS | 2019年 / 622卷

基金：

俄罗斯基础研究基金会; 芬兰科学院;

关键词：

accretion; accretion disks; magnetic fields; pulsars: individual: Swift J1816.7-1613; X-rays: binaries; stars: neutron; INTRINSIC COLOR INDEXES; ABSOLUTE MAGNITUDES; HIPPARCOS PARALLAXES; GALACTIC-CENTER; STARS; ACCRETION; OB; CALIBRATION; ABSORPTION; EMISSION;

D O I：

10.1051/0004-6361/201834635

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present results of investigation of the poorly studied X-ray pulsar Swift J1816.7-1613 during its transition from the type I outburst to the quiescent state. Our studies are based on the data obtained from X-ray observatories Swift, NuSTAR, and Chandra alongside with the latest IR data from UKIDSS/GPS and Spitzer/GLIMPSE surveys. The aim of the work is to determine the parameters of the system, namely the strength of the neutron star magnetic field and the distance to the source, which are required for the interpretation of the source behaviour in the framework of physically motivated models. No cyclotron absorption line was detected in the broad-band energy spectrum. However, the timing analysis hints at the typical for the X-ray pulsars magnetic field from a few x10(11) to a few x10(12) G. We also estimated the type of the IR-companion as a B0-2e star located at a distance of 7-13 kpc.

引用

页数：8