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.
@article{arxiv.2209.02502,
title = {Properties of MAXI J1348-630 during Its Second Outburst in 2019},
author = {Riya Bhowmick and Dipak Debnath and Kaushik Chatterjee and Arghajit Jana and Sujoy Kumar Nath},
journal= {arXiv preprint arXiv:2209.02502},
year = {2022}
}
Comments
22 Pages, 9 Figures, 6 Tables (accepted for publication in Galaxies MDPI Journal)