Zobrazeno 1 - 10
of 71
pro vyhledávání: '"Dipak Debnath"'
Publikováno v:
The Astrophysical Journal, Vol 975, Iss 2, p 194 (2024)
The recently discovered bright transient black hole candidate Swift J1727.8-1613 is studied in a broad energy range (0.5–79 keV) using combined NICER and NuSTAR data taken on 2023 August 29. A prominent type C quasiperiodic oscillation (QPO) at 0.8
Externí odkaz:
https://doaj.org/article/13c079ec448c4c9fa1ade6617bb688f2
Autor:
Sujoy Kumar Nath, Dipak Debnath, Kaushik Chatterjee, Riya Bhowmick, Hsiang-Kuang Chang, Sandip K. Chakrabarti
Publikováno v:
The Astrophysical Journal, Vol 960, Iss 1, p 5 (2023)
We study the recent outburst of the black hole candidate EXO 1846-031, which went into an outburst in 2019 after almost 34 yr in quiescence. We use archival data from the Swift/XRT, MAXI/GSC, NICER/XTI, and NuSTAR/FPM satellites/instruments to study
Externí odkaz:
https://doaj.org/article/04c00541ede84cb0a43ae88c491fc17c
Publikováno v:
The Astrophysical Journal, Vol 956, Iss 1, p 55 (2023)
The transient Galactic black hole candidate MAXI J0637–430 went through an outburst in 2019–2020 for the very first time. This outburst was active for almost 6 months from 2019 November to 2020 May. We study the spectral properties of this source
Externí odkaz:
https://doaj.org/article/f25d4c56a9984d9691aab561785dc787
Publikováno v:
Galaxies, Vol 10, Iss 5, p 95 (2022)
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 fr
Externí odkaz:
https://doaj.org/article/f594df3848ff44a3bde62fe56b1dee17
Autor:
Arghajit Jana, Jie-Rou Shang, Dipak Debnath, Sandip K. Chakrabarti, Debjit Chatterjee, Hsiang-Kuang Chang
Publikováno v:
Galaxies, Vol 9, Iss 2, p 39 (2021)
The 2015 Outburst of V404 Cygni is an unusual one with several X-ray and radio flares and rapid variation in the spectral and timing properties. The outburst occurred after 26 years of inactivity of the black hole. We study the accretion flow propert
Externí odkaz:
https://doaj.org/article/1564b24fe834492fb55a13eaf2f71aa7
Autor:
Debjit Chatterjee, Arghajit Jana, Kaushik Chatterjee, Riya Bhowmick, Sujoy Kumar Nath, Sandip K. Chakrabarti, A. Mangalam, Dipak Debnath
Publikováno v:
Galaxies, Vol 9, Iss 2, p 25 (2021)
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 spectral and temporal analysis during this outburst using observations from
Externí odkaz:
https://doaj.org/article/04df7c4848044dc985c763540b6ad3e5
Autor:
Sujoy Kumar Nath, Dipak Debnath, Kaushik Chatterjee, Arghajit Jana, Debjit Chatterjee, Riya Bhowmick
Publikováno v:
Advances in Space Research. 71:1045-1058
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 detailed spectral and temporal properties of the source in a broad ener
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1336f837b22878ceaeb16b026dd4e58a
https://doi.org/10.1016/j.asr.2022.08.013
https://doi.org/10.1016/j.asr.2022.08.013
Autor:
Dipak Debnath, Sandip K. Chakrabarti, Santanu Mondal, Arghajit Jana, Debjit Chatterjee, Aslam Ali Molla, Kaushik Chatterjee, Riya Bhowmick
Publikováno v:
The Fifteenth Marcel Grossmann Meeting.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5086aafae578c6029725ec5609afbf0c
https://doi.org/10.1142/9789811258251_0015
https://doi.org/10.1142/9789811258251_0015
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 493:2452-2462
We carry out a detailed study of the spectral and the timing properties of the stellar-mass black hole candidate XTE J1752-223 during its 2009-10 outburst using RXTE PCA data in the $2.5-25$ keV energy range. Low frequency quasi-periodic oscillations
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3b10ff8d5d294feafe1cb8cfb3ef45b6
https://doi.org/10.1093/mnras/staa391
https://doi.org/10.1093/mnras/staa391
Spectral and timing properties of accretion flows on a black hole depend on their density and temperature distributions, which in turn come from the underlying dynamics. Thus, an accurate description of the flow which includes hydrodynamics and radia
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b2035880746266db83ac4d39532b92cc
http://arxiv.org/abs/2201.04383
http://arxiv.org/abs/2201.04383
