15 citations · 66 across the 15 of their papers we have counts for
15 papers
Revisiting the 2021 Outburst of the BHC MAXI J1803-298 Using NICER, NuSTAR, and Insight-HXMT Data
Kaushik Chatterjee, Sujoy K. Nath
We present a broadband spectral and timing study of the black hole candidate MAXI J1803-298 during its 2021 outburst using simultaneous observations from NICER, NuSTAR, and Insight…
Bridging X-ray Polarization with Timing & Spectroscopic Parameters of a galactic black hole: Swift J1727.8-1613
Arka Chatterjee, Sujoy K. Nath, Kaushik Chatterjee +5
We report the discovery of a correlated energy-dependent time lag and degree of polarization for Swift J1727.8-1613 during its 2023 outburst. The energy-dependent time lag is measu…
Evolution of Time-Lags of Swift J1727.8-1613 during the Rising Phase of Its Discovery Outburst
Sujoy Kumar Nath, Dipak Debnath, Hsiang-Kuang Chang
We investigate the accretion dynamics of the black hole X-ray binary Swift J1727.8-1613 during its discovery outburst that lasted for months. Insight-HXMT moni…
Distinct Fe-K Line Complexes in MAXI J1744-294 Revealed by XRISM High-Resolution Spectroscopy
Kaushik Chatterjee, Santanu Mondal, Biswaraj Palit +7
The newly discovered Galactic transient MAXI J1744-294 went into its first X-ray outburst in 2025. We study the spectral properties of this source in the 2-10 keV energy band durin…
Accretion Flow Properties of Swift J1727.8-1613 and Estimation of the BH Mass
Dipak Debnath, Hsiang-Kuang Chang, Sujoy Kumar Nath +1
The rising phase of the 2023-24 outburst of the recently discovered bright transient black hole candidate Swift J1727.8-1613 was monitored by {\it Insight}-HXMT. We study the evolu…
Detection of QPO Soft Lag during Outburst of Swift J1727.8-1613: Estimation of Instrinsic Parameters from Spectral Study
Dipak Debnath, Sujoy Kumar Nath, Debjit Chatterjee +2
The recently discovered bright transient black hole candidate Swift J1727.8-1613 is studied in a broad energy range ( keV) using combined NICER and NuSTAR data on 29 August…
MAXI J0637-430: A Possible Candidate for Bulk Motion Comptonization?
Kaushik Chatterjee, Dipak Debnath, Sujoy Kumar Nath +1
The transient Galactic black hole candidate MAXI J0637-430 went through an outburst in 2019--20 for the very first time. This outburst was active for almost 6 months from November…
Accretion Flow Properties of EXO 1846-031 During its Multi-Peaked Outburst After Long Quiescence
Sujoy Kumar Nath, Dipak Debnath, Kaushik Chatterjee +3
We study the recent outburst of the black hole candidate EXO 1846-031 which went into an outburst in 2019 after almost 34 years in quiescence. We use archival data from Swift/XRT,…
Properties of MAXI J1348-630 during Its Second Outburst in 2019
Riya Bhowmick, Dipak Debnath, Kaushik Chatterjee +2
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 tempo…
Properties of 2017-18 'failed' Outburst of GX 339-4
Dipak Debnath, Kaushik Chatterjee, Sujoy Kumar Nath +2
The Galactic transient black hole candidate GX 339-4 is a very interesting object to study as it showed both complete and failed types of outbursts. We studied both spectral and te…
Accretion Flow Properties of MAXI J1910-057/Swift J1910.2-0546 During Its 2012-13 Outburst
Sujoy Kumar Nath, Dipak Debnath, Kaushik Chatterjee +3
Galactic black hole candidate MAXI J1910-057/Swift J1910.2-0546 was simultaneously discovered by MAXI/GSC and Swift/BAT satellites during its first outburst in 2012. We study the d…
Anomalous nature of outbursts of the black hole candidate 4U 1630-472
Kaushik Chatterjee, Dipak Debnath, Riya Bhowmick +2
The Galactic black hole candidate (BHC) 4U~1630-472 has gone through several outbursts (13 to be particular) in the last two and a half decades starting from the RXTE era till date…
Properties of Faint X-ray Activity of XTE J1908+094 in 2019
Debjit Chatterjee, Arghajit Jana, Kaushik Chatterjee +5
We study the properties of the faint X-ray activity of Galactic transient black hole candidate XTE~J1908+094 during its 2019 outburst. Here, we report the results of detailed spect…
Accretion Flow Properties of GRS 1716-249 during its 2016-17 'failed' Outburst
Kaushik Chatterjee, Dipak Debnath, Debjit Chatterjee +4
In , the Galactic transient black hole candidate GRS 1716-249 exhibited an outburst event after a long period of quiescence of almost 23 years. The source remained in the…
AstroSat Observation of Non-Resonant Type-C QPOs in MAXI J1535-571
D. Chatterjee, D. Debnath, A. Jana +8
Galactic transient black hole candidate (BHC) MAXI J1535-571 was discovered on 2017 September 02 simultaneously by {\it MAXI}/GSC and {\it Swift}/BAT instruments. It has also been…