Spectro-temporal evolution during the onset-phase of the 2011 outburst of IGR J17091-3624 -- Implications on accretion disk dynamics
Abstract
We re-analysed the archival data of RXTE / INTEGRAL / Swift satellites at the onset phase of the 2011 outburst of the X-ray source IGR J17091-3624. The evolution of the spectral and temporal properties of the source in this phase clearly exhibits state transition as Hard (HS) → Hard-Intermediate (HIMS) → Soft-Intermediate (SIMS) → Soft (SS) state, before entering the variability phase (VP). We attempt to understand the evolution of X-ray features and the state transitions based on two different types of accreting material (i.e., the Keplerian and sub-Keplerian flow).
- Publication:
-
Astronomical Society of India Conference Series
- Pub Date:
- 2013
- DOI:
- 10.48550/arXiv.1309.2379
- arXiv:
- arXiv:1309.2379
- Bibcode:
- 2013ASInC...8...79I
- Keywords:
-
- stars: individual: IGR J17091-3624;
- methods: data analysis;
- black hole physics;
- radiation mechanisms: general;
- Astrophysics - High Energy Astrophysical Phenomena
- E-Print:
- Accepted for publication in the proceedings of ASI conference series of BASI