Properties of MAXI J1348-630 during Its Second Outburst in 2019
Abstract
The newly discovered galactic black hole candidate (BHC) MAXI J1348-630 showed two major outbursts in 2019, just after its discovery. Here, we provide a detailed spectral and temporal analysis of the less-studied second outburst using archive data from multiple satellites, namely Swift, MAXI, NICER, NuSTAR and AstroSat. The outburst continued for around two and a half months. Unlike the first outburst from this source, this second outburst was a 'failed' one. The source did not transition to soft or intermediate spectral states. During the entire outburst, the source was in the hard state with high dominance of non-thermal photons. The presence of strong shocks are inferred from spectral fitting using a TCAF model. In NuSTAR spectra, weak reflection is observed from spectral fitting. Low-frequency quasi-periodic oscillations are also detected in AstroSat data.
- Publication:
-
Galaxies
- Pub Date:
- September 2022
- DOI:
- 10.3390/galaxies10050095
- arXiv:
- arXiv:2209.02502
- Bibcode:
- 2022Galax..10...95B
- Keywords:
-
- X-rays;
- binaries;
- stars;
- individual;
- MAXI J1348-630;
- black holes;
- accretion;
- accretion discs;
- radiation;
- dynamics;
- shock waves;
- Astrophysics - High Energy Astrophysical Phenomena
- E-Print:
- 22 Pages, 9 Figures, 6 Tables (accepted for publication in Galaxies MDPI Journal)