Zobrazeno 1 - 10
of 955
pro vyhledávání: '"Chatterjee, Kaushik."'
Autor:
Debnath, Dipak, Nath, Sujoy Kumar, Chatterjee, Debjit, Chatterjee, Kaushik, Chang, Hsiang-Kuang
Publikováno v:
2024, The Astrophysical Journal, 975, 194
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 on 29 August 2023. A promonient type-C Quasi-Periodic Oscillation (QPO) at $0.89 \
Externí odkaz:
http://arxiv.org/abs/2409.14286
For the first time, in March 2024, the transient Galactic black hole candidate Swift J151857.0-572147 experienced an outburst. Using publicly available archived {\it Insight}-HXMT data, we analyze the timing and spectral features of this source. Thro
Externí odkaz:
http://arxiv.org/abs/2406.17629
Autor:
Chen, Xinlei, Kumar, Brajesh, Er, Xinzhong, Guo, Helong, Yang, Yuan-Pei, Lin, Weikang, Fang, Yuan, Du, Guowang, Liu, Chenxu, Zhao, Jiewei, Zhang, Tianyu, Bao, Yuxi, Zou, Xingzhu, Pan, Yu, Wang, Yu, Zhu, Xufeng, Chatterjee, Kaushik, Liu, Xiangkun, Liu, Dezi, Lagioia, Edoardo P., Rangwal, Geeta, Zhong, Shiyan, Zhang, Jinghua, Lian, Jianhui, Cai, Yongzhi, Zhang, Yangwei, Liu, Xiaowei
Publikováno v:
ApJL, 2024, 971:L2
We present early-phase good-cadence (hour-to-day) simultaneous multiband ($ugi$ and $vrz$ bands) imaging of the nearby supernova SN~2024ggi, which exploded in the nearby galaxy, NGC 3621. A quick follow-up was conducted within less than a day after t
Externí odkaz:
http://arxiv.org/abs/2405.07964
The transient Galactic black hole candidate Swift\,J1727.8-1613 went through an outburst for the very first time in August 2023 and lasted for almost 6 months. We study the timing and spectral properties of this source using publicly available archiv
Externí odkaz:
http://arxiv.org/abs/2405.01498
Autor:
Mondal, Santanu, Suribhatla, S. Pujitha, Chatterjee, Kaushik, Singh, Chandra B., Chatterjee, Rwitika
We study the spectro-polarimetric properties of a newly discovered black hole X-ray binary Swift\,J151857.0-572147 jointly using {\it IXPE} and {\it NuSTAR} observations during March 2024. The analysis of {\it IXPE} data reports the first detection o
Externí odkaz:
http://arxiv.org/abs/2404.09643
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 2019 to May 2020. We study the spectral properties of this source duri
Externí odkaz:
http://arxiv.org/abs/2309.04343
Autor:
Nath, Sujoy Kumar, Debnath, Dipak, Chatterjee, Kaushik, Bhowmick, Riya, Chang, Hsiang-Kuang, Chakrabarti, Sandip K.
Publikováno v:
2024, ApJ, 960, 5
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, MAXI/GSC, NICER/XTI and NuSTAR/FPM satellites/instruments to study the
Externí odkaz:
http://arxiv.org/abs/2307.04522
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:
http://arxiv.org/abs/2209.02502
Publikováno v:
In International Immunopharmacology 25 December 2024 143 Part 3
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 temporal properties of the 2017-18 outburst of the source using archival
Externí odkaz:
http://arxiv.org/abs/2111.13403