AC1 - Spectral and Temporal properties of Black Holes and neutron stars and the theoretical models |
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Speaker |
Chatterjee, Debjit |
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Coauthors |
Chatterjee, Debjit; Shang, Jie-Rou; Debnath, Dipak; Jana, Arghajit; Chakrabarti, Sandip K.; Yap, Y.-X.; Chiu, C.-L.; Chang, Hsiang-Kuang |
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New Black Hole Candidate MAXI J1535-571 During its 2017 Outburst |
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Abstract |
We present spectral and timing analysis results of the newly-discovered Galactic X-ray transient source MAXI J1535-571, which is likely a black hole binary. The source was discovered on 2017 Sep. 02. During the soft/high state, the maximum X-ray flux in 0.3-10 keV band increased by 25 times than that in the quiescent state, which is about 4 Crab. Using combined Swift/XRT, BAT and MAXI/GSC observations, we study accretion flow processes around the black hole from spectral fits with the Two-Component Advective Flow (TCAF) model in XSPEC. Depending upon the variations of the TCAF model fitted accretion flow parameters and nature of quasi-periodic oscillations (QPOs), we classified the entire period of the outburst in different spectral states. We also estimated the probable mass of the source as 9.03 solar mass with a range from 8.17 to 10.54 solar mass. References: 1) Chakrabarti, S.K., & Titarchuk, L.G., 1995, ApJ, 455, 623 2) Debnath, D., Chakrabarti, S.K., & Mondal, S., 2014, MNRAS, 440, L121 3) J.-R. Shang, D. Debnath, D. Chatterjee, et al., 2018, MNRAS (submitted) |
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Talk view |
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