| Name: | Sree Pujitha Suribhatla |
| Affiliation: | Indian Institute of Astrophysics, Bengaluru |
| Conference ID : | ASI2024_389 |
| Title : | Spectral&timing properties of newly discovered black hole binary Swift J1727.8-1613 during its 2023 outburst using AstroSat data |
| Authors : | Sree Pujitha Suribhatla1, Santanu Mondal1 |
| Authors Affiliation: | 1 Indian Institute of Astrophysics, II Block Koramangala, Bangalore 560034, India |
| Mode of Presentation: | Poster |
| Abstract Category : | High Energy Phenomena, Fundamental Physics and Astronomy |
| Abstract : | The black hole X-ray binary Swift J1727.8-1613 went into an outburst in September 2023 and was observed by AstroSat. We present the X-ray timing and spectral analysis of the outburst and attempt to establish the energy-dependency of the quasi-periodic oscillation (QPO) frequency. The source shows a flux profile in the hard energy band and in a timescale $\lesssim$ 70 ks. Preliminary timing study shows that the type-C QPOs were prominent in lower energy bands and disappeared in the higher energy regimes. In addition to this, the joint spectrum of LAXPC and SXT data is fitted using models of power-law, Comptonization and standard models of disc accretion. Finally, since the source has been recently discovered, the spectral analysis wishes to estimate the black hole mass, mass accretion rate, and other parameters through model-fitting. |
