Zobrazeno 1 - 10
of 210
pro vyhledávání: '"V. K. Agrawal"'
Autor:
Pragati Sahu, Swadesh Chand, Parijat Thakur, G. C. Dewangan, V. K. Agrawal, Prakash Tripathi, Subhashish Das
Publikováno v:
The Astrophysical Journal, Vol 975, Iss 2, p 165 (2024)
We perform a comprehensive timing and broadband spectral analysis using an AstroSat observation of the low-mass black hole X-ray binary H 1743–322 during its 2017 outburst. Additionally, we use two Swift/XRT observations, one of which is simultaneo
Externí odkaz:
https://doaj.org/article/bf4022537c76432dada6159b587dcfd8
Publikováno v:
Panacea Journal of Medical Sciences. 12:370-373
This study was conducted to studyprescribing pattern of drugs amongst mild to moderate COVID-19 patients in COVID dedicated medical college hospital in northern India. : A retrospective, descriptive study was conducted in a COVID dedicated medical co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5dca760683afeccfc44fe47fba5a6351
https://doi.org/10.18231/j.pjms.2022.070
https://doi.org/10.18231/j.pjms.2022.070
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 507:2602-2613
We present a detailed spectral and timing analysis of Cygnus X-1 with multi-epoch observations, during $2016$ to $2019$, by SXT and LAXPC on-board AstroSat. We model the spectra in broad energy range of $0.5\!-\!70.0\,\rm{keV}$ to study the evolution
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4cd5065b339d872cc0467e78e34d11d6
https://doi.org/10.1093/mnras/stab2258
https://doi.org/10.1093/mnras/stab2258
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 506:6203-6211
For the first time, simultaneous broad-band spectral and timing study of the atoll source 4U 1705-44 was performed using AstroSat Soft X-ray Telescope (SXT) and Large Area X-ray Proportional Counter (LAXPC) data (0.8–70 keV). Based on the HID, the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c509d1a30f86a57389b0e34c41bc9a2c
https://doi.org/10.1093/mnras/stab1892
https://doi.org/10.1093/mnras/stab1892
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 505:3785-3794
We present an in-depth analysis and results of eleven XMM-Newton datasets, spanning 2000 to 2016, of the anomalous X-ray Pulsar CXOU J010043.1$-$721134 which has been classified as a magnetar. We find a spin-period of 8.0275(1) s as of December 2016
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::98bf68eb0a86dfbb1249c81fcc9d4757
https://doi.org/10.1093/mnras/stab1499
https://doi.org/10.1093/mnras/stab1499
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 501:6123-6138
IGR J17091--3624 is a transient galactic black hole which has a distinct quasi-periodic variability known as `heartbeat', similar to the one observed in GRS 1915+105. In this paper, we report the results of $\sim 125$ ks \textit{AstroSat} observation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fe7649580da651ce40c1dc8bd919d341
https://doi.org/10.1093/mnras/staa3756
https://doi.org/10.1093/mnras/staa3756
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 499:2214-2228
We performed spectro-temporal analysis in the 0.8--50 keV energy band of the neutron star Z source GX 17+2 using AstroSat Soft X-ray Telescope (SXT) and Large Area X-ray Proportional Counter (LAXPC) data. The source was found to vary in the normal br
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2d9861ca444d0072e9165e721ab68fc6
https://doi.org/10.1093/mnras/staa2939
https://doi.org/10.1093/mnras/staa2939
AstroSat view of the newly discovered X-ray transient MAXI~J1803--298 in the Hard-intermediate state
We perform comprehensive temporal and spectral analysis of the newly discovered X-ray transient MAXI~J1803--298 using an AstroSat target of opportunity observation on May 11, 2021 during its outburst. The source was found to be in the hard intermedia
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eda4c57c2a7061c3afadc32b610e1f53
http://arxiv.org/abs/2112.03556
http://arxiv.org/abs/2112.03556
Publikováno v:
Journal of Astrophysics and Astronomy. 42
We performed the timing and spectral studies of a Z source GX 17+2 observed from Astrosat LAXPC instrument. Cross-Correlation function (CCF) was performed using soft (3-5 keV) and hard (16-40 keV) X -ray bands across the hardness intensity diagram an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::73b38ac9e3f6fc040f10558d20667bd7
https://doi.org/10.1007/s12036-021-09760-0
https://doi.org/10.1007/s12036-021-09760-0
In this letter, we develop a model formalism to study the structure of a relativistic, viscous, optically thin, advective accretion flow around a rotating black hole in presence of radiative coolings. We use this model to examine the physical paramet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c071e411edd4ac6a576d3ff14a00b514
http://arxiv.org/abs/2108.02973
http://arxiv.org/abs/2108.02973