Accretion disc evolution in GRO J1655-40 and LMC X-3 with relativistic and non-relativistic disc models
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F23%3A00575397" target="_blank" >RIV/67985815:_____/23:00575397 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11320/23:10468660
Result on the web
<a href="https://doi.org/10.1093/mnras/stad2339" target="_blank" >https://doi.org/10.1093/mnras/stad2339</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1093/mnras/stad2339" target="_blank" >10.1093/mnras/stad2339</a>
Alternative languages
Result language
angličtina
Original language name
Accretion disc evolution in GRO J1655-40 and LMC X-3 with relativistic and non-relativistic disc models
Original language description
Black hole X-ray binaries are ideal environments to study the accretion phenomena in strong gravitational potentials. These systems undergo dramatic accretion state transitions and analysis of the X-ray spectra is used to probe the properties of the accretion disc and its evolution. In this work, we present a systematic investigation of & SIM, 1800 spectra obtained by Rossi X-Ray Timing Explorer Proportional Counter Array observations of GRO J1655-40 and LMC X-3 to explore the nature of the accretion disc via non-relativistic and relativistic disc models describing the thermal emission in black hole X-ray binaries. We demonstrate that the non-relativistic modelling throughout an outburst with the phenomenological multicolour disc model DISKBB yields significantly lower and often unphysical inner disc radii and correspondingly higher (& SIM, 50-60 per cent) disc temperatures compared to its relativistic counterparts KYNBB and KERRBB. We obtained the dimensionless spin parameters of a(*) = 0.774 & PLUSMN, 0.069 and a(*) = 0.752 & PLUSMN, 0.061 for GRO J1655-40 with KERRBB and KYNBB, respectively. We report a spin value of a(*) = 0.098 & PLUSMN, 0.063 for LMC X-3 using the updated black hole mass of 6.98 M-& ODOT. Both measurements are consistent with the previous studies. Using our results, we highlight the importance of self-consistent modelling of the thermal emission, especially when estimating the spin with the continuum-fitting method which assumes the disc terminates at the innermost stable circular orbit at all times.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
<a href="/en/project/GX21-06825X" target="_blank" >GX21-06825X: Accreting Black Holes in the new era of X-ray polarimetry missions</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Monthly Notices of the Royal Astronomical Society
ISSN
0035-8711
e-ISSN
1365-2966
Volume of the periodical
525
Issue of the periodical within the volume
1
Country of publishing house
US - UNITED STATES
Number of pages
23
Pages from-to
1288-1310
UT code for WoS article
001051114800040
EID of the result in the Scopus database
2-s2.0-85169907020