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A reflection model for the cyclotron lines in the spectra of X-ray pulsars

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dc.contributor.author Poutanen J.
dc.contributor.author Mushtukov A.
dc.contributor.author Suleimanov V.
dc.contributor.author Tsygankov S.
dc.contributor.author Nagirner D.
dc.contributor.author Doroshenko V.
dc.contributor.author Lutovinov A.
dc.date.accessioned 2018-09-18T20:01:57Z
dc.date.available 2018-09-18T20:01:57Z
dc.date.issued 2013
dc.identifier.issn 0004-637X
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/135904
dc.description.abstract Cyclotron resonance scattering features observed in the spectra of some X-ray pulsars show significant changes of the line energy with the pulsar luminosity. At high luminosities, these variations are often associated with the onset and growth of the accretion column, which is believed to be the origin of the observed emission and of the cyclotron lines. However, this scenario inevitably implies a large gradient of the magnetic field strength within the line-forming region, which makes the formation of the observed line-like features problematic. Moreover, the observed variation of the cyclotron line energy is much smaller than could be anticipated for the corresponding luminosity changes. We argue here that a more physically realistic situation is that the cyclotron line forms when the radiation emitted by the accretion column is reflected from the neutron star surface, where the gradient of the magnetic field strength is significantly smaller. Here we develop a reflection model and apply it to explain the observed variations of the cyclotron line energy in a bright X-ray pulsar V 0332+53 over a wide range of luminosities. © 2013. The American Astronomical Society. All rights reserved.
dc.relation.ispartofseries Astrophysical Journal
dc.subject line: formation
dc.subject pulsars: general
dc.subject relativistic processes
dc.subject scattering
dc.subject stars: neutron
dc.subject X-rays: binaries
dc.title A reflection model for the cyclotron lines in the spectra of X-ray pulsars
dc.type Article
dc.relation.ispartofseries-issue 2
dc.relation.ispartofseries-volume 777
dc.collection Публикации сотрудников КФУ
dc.source.id SCOPUS0004637X-2013-777-2-SID84886674845


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  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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