Intrinsic polarization of Wolf-Rayet stars due to the rotational modulation of the stellar wind
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F22%3A00138828" target="_blank" >RIV/00216224:14310/22:00138828 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1017/S1743921322002241" target="_blank" >http://dx.doi.org/10.1017/S1743921322002241</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1017/S1743921322002241" target="_blank" >10.1017/S1743921322002241</a>
Alternative languages
Result language
angličtina
Original language name
Intrinsic polarization of Wolf-Rayet stars due to the rotational modulation of the stellar wind
Original language description
Wolf-Rayet stars are regarded as candidates for progenitors of core-collapse supernovae, and they are expected to be progenitors of long gamma-ray bursts. These types of stars are considered to be fast rotators. Their high rotation speed breaks the sphericity of the star and leads to an axisymmetric wind density structure. In such a case, the electron scattering takes place in a nonspherical environment, and as a result, we might expect an intrinsic polarization. We present a 2.5D radiation hydrodynamic stellar wind model of these stars. The model simulations account for the deformation of the stellar surface due to rotation, gravity darkening, and nonradial forces. We computed the polarization from the density variable of the hydrodynamic model, derived the upper limit of rotational velocities, and found no conflict with the previous studies of Wolf-Rayet stars.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Proceedings of the International Astronomical Union , Volume 18 , Symposium S361: Massive Stars Near and Far
ISBN
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ISSN
1743-9213
e-ISSN
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Number of pages
3
Pages from-to
490-492
Publisher name
Cambridge University Press
Place of publication
Cambridge University Press
Event location
Cambridge University Press
Event date
Jan 1, 2022
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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