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Observational aspects of outbursting black hole sources: Evolution of spectro-temporal features and X-ray variability
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
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2018 (English)In: Journal of astrophysics and astronomy, ISSN 0250-6335, E-ISSN 0973-7758, Vol. 39, no 1, article id 5Article in journal (Refereed) Published
Abstract [en]

We report on our attempt to understand the outbursting profile of Galactic Black Hole sources, keeping in mind the evolution of temporal and spectral features during the outburst. We present results of evolution of quasi-periodic oscillations, spectral states and possible connection with jet ejections during the outburst phase. Further, we attempt to connect the observedX-ray variabilities (i.e., 'class'/'structured' variabilities, similar to GRS 1915+105) with spectral states of black hole sources. Towards these studies, we consider three black hole sources that have undergone single (XTE J1859+226), a few (IGR J17091-3624) and many (GX 339-4) outbursts since the start of RXTE era. Finally, we model the broadband energy spectra (3-150 keV) of different spectral states using RXTE and NuSTAR observations. Results are discussed in the context of two-component advective flow model, while constraining the mass of the three black hole sources.

Place, publisher, year, edition, pages
Indian Academy of Sciences , 2018. Vol. 39, no 1, article id 5
Keywords [en]
Accretion, X-ray binaries, black holes, ISM: jets and outflows, radiation mechanisms
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:kth:diva-224705DOI: 10.1007/s12036-018-9510-0ISI: 000426559100015OAI: oai:DiVA.org:kth-224705DiVA, id: diva2:1193113
Conference
3rd Conference on REcent Trends in the Study of Compact Objects - Theory and Observation (RETCO), JUN 05-07, 2017, Thiruvananthapuram, India
Note

QC 20180326

Available from: 2018-03-26 Created: 2018-03-26 Last updated: 2018-03-26Bibliographically approved

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  • apa
  • harvard1
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  • de-DE
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