Publication:
Three-dimensional heat transfer effects in external layers of a magnetized neutron star

Файлы
W3045069189.pdf(1.21 MB)
Дата
2020
Авторы
Kondratyev, I. A.
Moiseenko, S. G.
Glushikhina, M. V.
Bisnovatyi-Kogan, G. S.
Journal Title
Journal ISSN
Volume Title
Издатель
Научные группы
Организационные подразделения
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Организационная единица
Институт лазерных и плазменных технологий
Стратегическая цель Института ЛаПлаз – стать ведущей научной школой и ядром развития инноваций по лазерным, плазменным, радиационным и ускорительным технологиям, с уникальными образовательными программами, востребованными на российском и мировом рынке образовательных услуг.
Выпуск журнала
Аннотация
© 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society.Determination of a magnetic field structure on a neutron star (NS) surface is an important problem of a modern astrophysics. In a presence of strong magnetic fields, a thermal conductivity of a degenerate matter is anisotropic. In this paper, we present 3D anisotropic heat transfer simulations in outer layers of magnetized NSs, and construct synthetic thermal light curves. We have used a different from previous works tensorial thermal conductivity coefficient of electrons, derived from the analytical solution of the Boltzmann equation by the Chapman-Enskog method. We have obtained an NS surface temperature distribution in presence of dipole-plus-quadrupole magnetic fields. We consider a case, in which magnetic axes of a dipole and quadrupole components of the magnetic field are not aligned. To examine observational manifestations of such fields, we have generated thermal light curves for the obtained temperature distributions using a composite blackbody model. It is shown that the simplest (only zero-order spherical function in quadrupole component) non-coaxial dipole-plus-quadrupole magnetic field distribution can significantly affect the thermal light curves, making pulse profiles non-symmetric and amplifying pulsations in comparison to the pure-dipolar field.
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Цитирование
Three-dimensional heat transfer effects in external layers of a magnetized neutron star / Kondratyev, I.A. [et al.] // Monthly Notices of the Royal Astronomical Society. - 2020. - 497. - № 3. - P. 2883-2892. - 10.1093/mnras/staa2154
URI
https://www.doi.org/10.1093/mnras/staa2154
 https://www.scopus.com/record/display.uri?eid=2-s2.0-85096961702&origin=resultslist
 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000577137200028
 https://openrepository.mephi.ru/handle/123456789/22669
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