197 citations · 812 across the 20 of their papers we have counts for
20 papers
The study of thermonuclear X-ray bursts in accreting millisecond pulsar MAXI J1816-195 with NuSTAR and NICER
Manoj Mandal, Sabyasachi Pal, Jaiverdhan Chauhan +2
The millisecond pulsar MAXI J1816-195 was recently discovered in an outburst by MAXI in 2022 May. We study different properties of the pulsar using data from NuSTAR and NICER obser…
Broadband spectral analysis of Mrk 926 using multi-epoch X-ray observations
S. Chalise, A. M. Lohfink, J. Chauhan +3
The X-ray spectra of some active galactic nuclei (AGN) show a soft X-ray excess, emission in excess to the extrapolated primary X-ray continuum below 2 keV. Recent studies have sho…
A broadband radio view of transient jet ejecta in the black hole candidate X-ray binary MAXI J1535-571
J. Chauhan, J. C. A. Miller-Jones, G. E. Anderson +19
We present a broadband radio study of the transient jets ejected from the black hole candidate X-ray binary MAXI J1535-571, which underwent a prolonged outburst beginning on 2 Sept…
Strong low-frequency radio flaring from Cygnus X-3 observed with LOFAR
J. W. Broderick, T. D. Russell, R. P. Fender +12
We present Low-Frequency Array (LOFAR) 143.5-MHz radio observations of flaring activity during 2019 May from the X-ray binary Cygnus X-3. Similar to radio observations of previous…
The black hole transient MAXI J1348-630: evolution of the compact and transient jets during its 2019/2020 outburst
F. Carotenuto, S. Corbel, E. Tremou +14
We present the radio and X-ray monitoring campaign of the 2019/2020 outburst of MAXI J1348-630, a new black hole X-ray binary (XRB) discovered in 2019 January. We observed MAXI J13…
Science with the Murchison Widefield Array: Phase I Results and Phase II Opportunities
A. P. Beardsley, M. Johnston-Hollitt, C. M. Trott +56
The Murchison Widefield Array (MWA) is an open access telescope dedicated to studying the low frequency (80300 MHz) southern sky. Since beginning operations in mid 2013, the MWA…
Broad-band spectral study of X-ray transient MAXI J1820+070 using Swift/XRT and NuSTAR
Priya Bharali, Jaiverdhan Chauhan, Kalyanee Boruah
We report on a \textit{NuSTAR} and \textit{Swift}/XRT observation of the newly discovered X-ray transient MAXI J1820+070. \textit{Swift}/XRT and \textit{NuSTAR} have concurrently o…
Re-awakening of GRS 1716--249 after 23 years, observed by {\it Swift}/XRT and {\it NuSTAR}
Priya Bharali, Sunil Chandra, Jaiverdhan Chauhan +4
In this work, we present a spectral and temporal analysis of {\it Swift}/XRT and {\it NuSTAR} observations of GRS 1716--249 during its recent 2016--2017 outburst. This low mass X-r…
An HI absorption distance to the black hole candidate X-ray binary MAXI J1535-571
Jaiverdhan Chauhan, James C. A. Miller-Jones, Gemma E. Anderson +10
With the Australian Square Kilometre Array Pathfinder (ASKAP) we monitored the black hole candidate X-ray binary MAXI J1535--571 over seven epochs from 21 September to 2 October 20…
LAXPC / AstroSat Study of ~ 1 and ~ 2 mHz Quasi-periodic Oscillations in the Be/X-ray Binary 4U 0115+63 During its 2015 Outburst
Jayashree Roy, P. C. Agrawal, N. K. Iyer +13
The Be X-ray Binary 4U 0115+63 was observed by Large Area X-ray Proportional Counter (LAXPC) instrument on AstroSat on 2015 October 24 during the peak of a giant Type II outburst.…
Thermonuclear X-ray bursts in rapid succession in 4U 1636-536 with AstroSat-LAXPC
Aru Beri, Biswajit Paul, J S Yadav +12
We present results from an observation of the Low Mass X-ray Binary 4U 1636-536 obtained with the LAXPC instrument aboard AstroSat. The observations of 4U 1636-536 made during the…
Effects of thermonuclear X-ray bursts on non-burst emissions in the soft state of 4U 1728--34
Sudip Bhattacharyya, J. S. Yadav, Navin Sridhar +8
It has recently been shown that the persistent emission of a neutron star low-mass X-ray binary (LMXB) evolves during a thermonuclear (type-I) X-ray burst. The reason of this evolu…
Extensive broadband X-ray monitoring during the formation of a giant radio jet base in Cyg X-3 with AstroSat
Mayukh Pahari, J S Yadav, Jai Verdhan Chauhan +9
We present X-ray spectral and timing behavior of Cyg X-3 as observed by AstroSat during the onset of a giant radio flare on 01-02 April 2017. Within a time-scale of few hours, the…
X-ray timing analysis of Cyg X-3 using AstroSat/LAXPC: Detection of milli-hertz quasi-periodic oscillations during the flaring hard X-ray state
Mayukh Pahari, H. M. Antia, J. S. Yadav +10
We present here results from the X-ray timing and spectral analysis of the X-ray binary Cyg X-3 using observations from Large Area X-ray Proportional Counter (LAXPC) on-board Astro…
Large Area X-ray Proportional Counter (LAXPC) Instrument on AstroSat and Some Preliminary Results from its performance in the orbit
P. C. Agrawal, J. S. Yadav, H. M. Antia +25
Large Area X-ray Propositional Counter (LAXPC) instrument on AstroSat is aimed at providing high time resolution X-ray observations in 3 to 80 keV energy band with moderate energy…
Large Area X-ray Proportional Counter (LAXPC) Instrument on AstroSat
J. S. Yadav, P. C. Agrawal, H. M. Antia +3
Large Area X-ray Proportional Counter (LAXPC) is one of the major AstroSat payloads. LAXPC instrument will provide high time resolution X-ray observations in 3 to 80 keV energy ban…
AstroSat/LAXPC detection of milli-second phenomena in 4U 1728-34
Jai Verdhan Chauhan, J S Yadav, Ranjeev Misra +10
The low mass X-ray binary 4U 1728-24 was observed with AstroSat/LAXPC on 8th March 2016. Data from a randomly chosen one orbit of over 3 ks was analyzed for detection of rapid inte…
Calibration of the Large Area X-ray Proportional Counter (LAXPC) instrument on-board AstroSat
H. M. Antia, J. S. Yadav, P. C. Agrawal +21
We present the calibration and background model for the Large Area X-ray Proportional Counter (LAXPC) detectors on-board AstroSat. LAXPC instrument has three nominally identical de…
AstroSat/LAXPC observation of Cygnus X-1 in the hard state
Ranjeev Misra, J S Yadav, Jai Verdhan Chauhan +10
We report the first analysis of data from AstroSat/LAXPC observations of Cygnus X-1 in January 2016. LAXPC spectra reveals that the source was in the canonical hard state, represen…
AstroSat/LAXPC reveals the high energy variability of GRS 1915+105 in the chi class
J S Yadav, Ranjeev Misra, Jai Verdhan Chauhan +10
We present the first quick look analysis of data from nine {\it AstroSat}'s LAXPC observations of GRS 1915+105 during March 2016 when the source had the characteristics of being in…