TY - GEN
T1 - Evolution of spectral and temporal properties of MAXI J1836-194 during 2011 outburst
AU - Jana, Arghajit
AU - Debnath, Dipak
AU - Chakrabarti, Sandip K.
AU - Mondal, Santanu
AU - Molla, Aslam Ali
AU - Chatterjee, Debjit
N1 - Funding Information:
AJ and DD acknowledge support from ISRO sponsored RESPOND project fund (ISRO/RES/2/388/2014-15). DD and DC acknowledge support from DST sponsored Fast-track Young Scientist project fund (SR/FTP/PS-188/2012). AAM and SM acknowledge supports of MoES sponsored junior research fellowship and postdoctoral fellowship respectively. We are also thankful to MG14 organizers, ICTP, and IUPAP for providing partial travel support and conference registration fee for the presenting author (DD).
Publisher Copyright:
Copyright © 2018 by the Editors.All rights reserved.
PY - 2018/1/1
Y1 - 2018/1/1
N2 - We study transient Galatic black hole candidate MAXI J1836-194 during its 2011 outburst using RXTE/PCA archival data. 2.5-25 keV spectra are fitted with Two Component Advective Flow (TCAF) model fits file as an additive table local model in XSPEC. From TCAF model spectral fits, physical parameters such as Keplerian disk rate, sub-Keplerian halo rate, shock location and compression ratio are extracted directly for better understanding of accretion processes around the BHC during this outburst. Low frequency quasi-periodic oscillation (QPO) are observed sporadically during the entire epoch of the outburst, with a general trend of increasing frequency during rising and decreasing frequency during declining phases of the outburst, as in other transient BHCs. The nature of the variation of the accretion rate ratio (ratio of halo and disk rates) and QPOs (if observed), allows us to properly classify entire epoch of the outburst into following two spectral state, such as hard (HS), hard-intermediate (HIMS). These states are observed in the sequence of HS (Ris.) → HIMS (Ris.) → HIMS (Dec.) → HS (Dec.). This outburst of MAXI J1836-194 could be termed as 'failed' outburst, since no observation of soft (SS) and soft-intermediate (SIMS) spectral state are found during the entire outburst.
AB - We study transient Galatic black hole candidate MAXI J1836-194 during its 2011 outburst using RXTE/PCA archival data. 2.5-25 keV spectra are fitted with Two Component Advective Flow (TCAF) model fits file as an additive table local model in XSPEC. From TCAF model spectral fits, physical parameters such as Keplerian disk rate, sub-Keplerian halo rate, shock location and compression ratio are extracted directly for better understanding of accretion processes around the BHC during this outburst. Low frequency quasi-periodic oscillation (QPO) are observed sporadically during the entire epoch of the outburst, with a general trend of increasing frequency during rising and decreasing frequency during declining phases of the outburst, as in other transient BHCs. The nature of the variation of the accretion rate ratio (ratio of halo and disk rates) and QPOs (if observed), allows us to properly classify entire epoch of the outburst into following two spectral state, such as hard (HS), hard-intermediate (HIMS). These states are observed in the sequence of HS (Ris.) → HIMS (Ris.) → HIMS (Dec.) → HS (Dec.). This outburst of MAXI J1836-194 could be termed as 'failed' outburst, since no observation of soft (SS) and soft-intermediate (SIMS) spectral state are found during the entire outburst.
KW - Accretion disk
KW - Black hole:Individual (MAXI J1836-194)
UR - http://www.scopus.com/inward/record.url?scp=85059088773&partnerID=8YFLogxK
U2 - 10.1142/9789813226609_0058
DO - 10.1142/9789813226609_0058
M3 - Conference contribution
AN - SCOPUS:85059088773
T3 - 14th Marcel Grossman Meeting On Recent Developments in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories, Proceedings
SP - 1038
EP - 1043
BT - 14th Marcel Grossman Meeting On Recent Developments in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories, Proceedings
A2 - Bianchi, Massimo
A2 - Jantzen, Robert T
A2 - Ruffini, Remo
A2 - Ruffini, Remo
PB - World Scientific Publishing Co. Pte Ltd
T2 - 14th Marcel Grossman Meeting On Recent Developments in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories
Y2 - 12 July 2015 through 18 July 2015
ER -