X-ray emission from hydrodynamical wind simulations in non-LTE models
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F11%3A00050049" target="_blank" >RIV/00216224:14310/11:00050049 - isvavai.cz</a>
Alternative codes found
RIV/67985815:_____/11:00372640
Result on the web
<a href="http://adsabs.harvard.edu/abs/2011IAUS..272..614K" target="_blank" >http://adsabs.harvard.edu/abs/2011IAUS..272..614K</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1017/S1743921311011562" target="_blank" >10.1017/S1743921311011562</a>
Alternative languages
Result language
angličtina
Original language name
X-ray emission from hydrodynamical wind simulations in non-LTE models
Original language description
Massive hot stars are strong sources of X-ray emission originating in their winds. Although hydrodynamical wind simulations that are able to predict this X-ray emission are available, the inclusion of X-rays in stationary wind models is usually based oncrude approximations. To improve this, we use results from time-dependent hydrodynamical simulations of the line-driven wind instability to derive an analytical approximation of X-ray emission in the stellar wind. We use this approximation in our non-LTEwind models and find that an improved inclusion of X-rays leads to a better agreement between model ionization fractions and those derived from observations. Furthermore, the slope of the Lx-L relation is in better agreement with observations, albeit the X-ray luminosity is underestimated by a factor of three. We propose that a possible solution for this discrepancy is connected with the wind porosity.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
BN - Astronomy and celestial mechanics, astrophysics
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GA205%2F08%2F0003" target="_blank" >GA205/08/0003: Mass-loss rate predictions for hot stars</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Active OB stars: structure, evolution, mass loss, and critical limits
ISBN
978-0-521-19840-0
ISSN
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e-ISSN
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Number of pages
2
Pages from-to
614-615
Publisher name
Cambridge University Press
Place of publication
Cambridge
Event location
Paříž, Francie
Event date
Jan 1, 2010
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000294438200166