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Properties of the transient X-ray pulsar Swift J1816.7-1613 and its optical companion
Univ Turku, Dept Phys & Astron, Turku 20014, Finland..
Univ Turku, Dept Phys & Astron, Turku 20014, Finland.;Russian Acad Sci, Space Res Inst, Profsoyuznaya Str 84-32, Moscow 117997, Russia..
Russian Acad Sci, Space Res Inst, Profsoyuznaya Str 84-32, Moscow 117997, Russia..
Univ Turku, Dept Phys & Astron, Turku 20014, Finland..
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2019 (English)In: Astronomy and Astrophysics, ISSN 0004-6361, E-ISSN 1432-0746, Vol. 622, article id A198Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
EDP Sciences, 2019. Vol. 622, article id A198
Keywords [en]
accretion, accretion disks, magnetic fields, pulsars: individual: Swift J1816.7-1613, X-rays: binaries, stars: neutron
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:kth:diva-245916DOI: 10.1051/0004-6361/201834635ISI: 000458946800004Scopus ID: 2-s2.0-85062023628OAI: oai:DiVA.org:kth-245916DiVA, id: diva2:1296851
Note

QC 201900318

Available from: 2019-03-18 Created: 2019-03-18 Last updated: 2019-04-04Bibliographically approved

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Poutanen, Juri

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