47 citations · 295 across the 28 of their papers we have counts for
28 papers
The Advanced X-ray Imaging Satellite (AXIS) Community Science Book
Michael Koss, Nafisa Aftab, Steven W. Allen +395
The AXIS Community Science Book represents the collective effort of 592 scientists worldwide to define the transformative science enabled by the Advanced X-ray Imaging Satellite (A…
Intriguing nature of AM Her type candidate CXOU J204734.8+300105
Rahul Sharma, Chetana Jain, Biswajit Paul +2
The detection and characterization of periodic X-ray signals are crucial for identifying new compact objects and studying the mechanisms powering their emission. We report on the t…
Sidebands to mHz QPOs in 4U 162667 in the second spin-down state
Rahul Sharma, Chetana Jain, Biswajit Paul +1
We report results from an Target-of-Opportunity (ToO) observation of 4U 162667, performed on 2023 May 18, soon after the discovery of torque reversal to spin-down in…
The 2021 outburst of 2S 1417-624 revisited with AstroSat
Chetana Jain
This work presents the first ever broadband (0.7-25.0 keV) timing and spectral analysis of Be-HMXB 2S 1417-624 during its 2021 outburst. Using AstroSat observations, coherent pulsa…
A comprehensive study of orbital evolution of LMC X-4: Existence of a second derivative of the orbital period
Chetana Jain, Rahul Sharma, Biswajit Paul
We report here results from pulse arrival time delay analysis of the eclipsing high mass X-ray binary pulsar LMC X-4 using observations made with the Rossi X-ray Timing Explorer, X…
AstroSat observation of the magnetar SGR J18300645 during its first detected X-ray outburst
Rahul Sharma, Chetana Jain, Biswajit Paul +1
We present here timing and spectral analyses of SGR J18300645 based on an AstroSat observation carried out on 2020 October 16, about a week after the onset of its first detected…
4U 1626-67 Returns to Spin-Down: Timing features toe the line
Rahul Sharma, Chetana Jain, Biswajit Paul
We present a comprehensive analysis of X-ray pulsar 4U 1626-67 during its current spin-down (2SD) state, following a recent torque reversal. Since its discovery, this ultra-compact…
Torque reversal and cyclotron absorption feature in HMXB 4U 1538-522
Prince Sharma, Chetana Jain, Anjan Dutta
We present a comprehensive timing and spectral analysis of the HMXB 4U 1538-522 by using the Nuclear Spectroscopic Telescope Array (NuSTAR) observatory data. Using three archived o…
Broadband mHz QPOs and spectral study of LMC X4 with AstroSat
Rahul Sharma, Chetana Jain, Ketan Rikame +1
We report the results of broadband timing and spectral analysis of data from an AstroSat observation of the High Mass X-ray binary LMC X4. The Large Area X-ray Proportional Coun…
Eclipse Timings of the LMXB XTE J1710-281 : Discovery of a third orbital period glitch
Chetana Jain, Rahul Sharma, Biswajit Paul
We present an updated measurement of orbital period evolution of LMXB XTE J1710-281 by using eclipse timing technique. Using data obtained with XMM-Newton, Suzaku, RXTE, Chandra an…
Broad-band spectral analysis of LMXB 2S 0921-63 with Suzaku
Prince Sharma, Chetana Jain, Anjan Dutta
We present the broad-band spectral analysis of the low-mass X-ray binary 2S 0921-63 by using the Suzaku archival data covering the orbital phase between 0.31 and 1.16 during four c…
Change in spin-down rate and detection of emission line in HMXB 4U 2206+54 with AstroSat observation
Chetana Jain, Ajay Yadav, Rahul Sharma
This work presents timing and spectral analysis of 4U 2206+54 using data obtained from LAXPC instrument onboard India's AstroSat mission. This source was observed with AstroSat in…
Discovery of cyclotron and narrow Fe K lines in HMXB GRO J1750-27
Prince Sharma, Chetana Jain, Anjan Dutta
We report on timing and spectral analysis of transient Be X-ray pulsar GRO J1750-27 by using the Nuclear Spectroscopic Telescope Array (NuSTAR) observation from September 2021. Thi…
Timing and Spectral Analysis of HMXB OAO 1657-415 with NuSTAR
Prince Sharma, Rahul Sharma, Chetana Jain +1
This work presents a comprehensive timing and spectral analysis of high-mass X-ray binary pulsar, OAO 1657-415 by using the observation made with Nuclear Spectroscopic Telescope Ar…
Broad-band spectral study of LMXB black hole candidate 4U 1957+11 with NuSTAR
Prince Sharma, Rahul Sharma, Chetana Jain +2
We present here the results of broadband spectral analysis of low-mass X-ray binary and a black hole candidate 4U 1957+11. The source was observed nine times with the Nuclear Spect…
Broad-band spectral analysis of LMXB XTE J1710-281 with Suzaku
Prince Sharma, Rahul Sharma, Chetana Jain +1
This work presents the broad-band time-averaged spectral analysis of neutron star low-mass X-ray binary, XTE J1710-281 by using the Suzaku archival data. The source was in a hard o…
Study of the reflection spectra of SAX J1748.9-2021
Rahul Sharma, Chetana Jain, Anjan Dutta
We report the spectral analysis of accretion powered millisecond X-ray pulsar SAX J1748.9-2021 from the NuSTAR observation made during its 2015 outburst. The spectra displayed a br…
Spectral properties of MXB 1658-298 in the low/hard and high/soft state
Rahul Sharma, Abdul Jaleel, Chetana Jain +3
We report results from a broadband spectral analysis of the low mass X-ray binary MXB 1658-298 with the Swift/XRT and NuSTAR observations made during its 2015-2017 outburst. The so…
Indication of a massive circumbinary planet orbiting the Low Mass X-ray Binary MXB 1658-298
Chetana Jain, Biswajit Paul, Rahul Sharma +2
We present an X-ray timing analysis of the transient X-ray binary MXB 1658-298, using data obtained from the RXTE and XMM-Newton observatories. We have made 27 new mid eclipse time…
Torque reversals and pulse profile of the pulsar 4U 1626-67
Aru Beri, Chetana Jain, Biswajit Paul +1
We review the pulse profile evolution of the unique accretion powered X-ray pulsar 4U 1626-67 over the last 40 years since its discovery. This pulsar showed two distinct eras of st…
Pulse profile stability of the Crab pulsar
Chetana Jain, Biswajit Paul
We present an X-ray timing analysis of the Crab pulsar, PSR B0531+21, using the archival RXTE data. We have investigated the stability of the Crab pulse profile, in soft (2-20 keV)…
Search for pulsations in the LMXB EXO 0748-676
Chetana Jain, Biswajit Paul
We present here results from our search for X-ray pulsations of the neutron star in the low mass X-ray binary EXO 0748-676 at a frequency near a burst-oscillation frequency of 44.7…
Eclipse Timings of the LMXB XTE J1710-281: Orbital Period Glitches
Chetana Jain, Biswajit Paul
We present an X-ray eclipse timing analysis of the transient low mass X-ray binary XTE J1710-281. We report observations of 57 complete X-ray eclipses, made with the proportional c…
New measurement of orbital and spin period evolution of the Accretion Disk Corona source 4U 1822-37
Chetana Jain, Biswajit Paul, Anjan Dutta
4U 1822-37 is a Low Mass X-ray Binary (LMXB) system with an Accretion Disk Corona. We have obtained 16 new mid-eclipse time measurements of this source during the last 13 years usi…