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arXiv · 2209.02502

Properties of MAXI J1348-630 during Its Second Outburst in 2019

Riya Bhowmick·Dipak Debnath·Kaushik Chatterjee·Arghajit Jana·Sujoy Kumar Nath
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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.

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Riya Bhowmick, Dipak Debnath, Kaushik Chatterjee, Arghajit Jana, Sujoy Kumar Nath. 2022-09-06. Properties of MAXI J1348-630 during Its Second Outburst in 2019. https://arxiv.org/abs/2209.02502

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