Contribution of a Non-Thermal Component to the X-Ray Emission of OB Stars

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Contribution of a Non-Thermal Component to the X-Ray Emission of OB Stars. / Ryspaeva, E. B.; Kholtygin, A. F.

In: Astrophysical Bulletin, Vol. 75, No. 2, 01.04.2020, p. 127-138.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{6777889bc3f04b8fb426b94401ce81a1,

title = "Contribution of a Non-Thermal Component to the X-Ray Emission of OB Stars",

abstract = "In the paper the possibility of the presence of a non-thermal component described by a power law spectrum in the X-ray spectra of OB stars is investigated. The low-resolution spectra of 101 OB stars obtained using the EPIC camera on the XMM satellite are analyzed. It is concluded that the contribution of the non-thermal component of X-ray emission can be significant and even determining for the stars similar to gamma Cas. The inclusion of the non-thermal component in the model X-ray spectra reduces the temperature of the thermal components of the X-ray plasma of such stars down to typical for OB stars values. The contribution of the non-thermal component can also be significant for binary stars with colliding stellar winds and for Of?p stars.",

keywords = "X-rays: stars, RADIO-EMISSION, ABSORPTION, SHOCKS",

author = "Ryspaeva, {E. B.} and Kholtygin, {A. F.}",

note = "Funding Information: This research was supported by the Russian Foundation for Basic Research, grant no. 19-02-00311 А. Publisher Copyright: {\textcopyright} 2020, Pleiades Publishing, Ltd. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.",

year = "2020",

month = apr,

day = "1",

doi = "10.1134/S199034132002011X",

language = "English",

volume = "75",

pages = "127--138",

journal = "Astrophysical Bulletin",

issn = "1990-3413",

publisher = "МАИК {"}Наука/Интерпериодика{"}",

number = "2",

}

RIS

TY - JOUR

T1 - Contribution of a Non-Thermal Component to the X-Ray Emission of OB Stars

AU - Ryspaeva, E. B.

AU - Kholtygin, A. F.

N1 - Funding Information: This research was supported by the Russian Foundation for Basic Research, grant no. 19-02-00311 А. Publisher Copyright: © 2020, Pleiades Publishing, Ltd. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2020/4/1

Y1 - 2020/4/1

N2 - In the paper the possibility of the presence of a non-thermal component described by a power law spectrum in the X-ray spectra of OB stars is investigated. The low-resolution spectra of 101 OB stars obtained using the EPIC camera on the XMM satellite are analyzed. It is concluded that the contribution of the non-thermal component of X-ray emission can be significant and even determining for the stars similar to gamma Cas. The inclusion of the non-thermal component in the model X-ray spectra reduces the temperature of the thermal components of the X-ray plasma of such stars down to typical for OB stars values. The contribution of the non-thermal component can also be significant for binary stars with colliding stellar winds and for Of?p stars.

AB - In the paper the possibility of the presence of a non-thermal component described by a power law spectrum in the X-ray spectra of OB stars is investigated. The low-resolution spectra of 101 OB stars obtained using the EPIC camera on the XMM satellite are analyzed. It is concluded that the contribution of the non-thermal component of X-ray emission can be significant and even determining for the stars similar to gamma Cas. The inclusion of the non-thermal component in the model X-ray spectra reduces the temperature of the thermal components of the X-ray plasma of such stars down to typical for OB stars values. The contribution of the non-thermal component can also be significant for binary stars with colliding stellar winds and for Of?p stars.

KW - X-rays: stars

KW - RADIO-EMISSION

KW - ABSORPTION

KW - SHOCKS

UR - http://www.scopus.com/inward/record.url?scp=85089774020&partnerID=8YFLogxK

U2 - 10.1134/S199034132002011X

DO - 10.1134/S199034132002011X

M3 - Article

AN - SCOPUS:85089774020

VL - 75

SP - 127

EP - 138

JO - Astrophysical Bulletin

JF - Astrophysical Bulletin

SN - 1990-3413

IS - 2

ER -

ID: 71415170