5 citations · 11 across the 14 of their papers we have counts for
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Rapid Orbital Decay in the Ultracompact Double-degenerate Binary eRASSU J060839.5704014
Rahul Sharma, Chandreyee Maitra, Frank Haberl +9
We present timing and spectral analysis of the recently identified ultracompact double-degenerate (DD) white dwarf binary eRASSU J060839.5704014 using observations from NICER an…
Accretion geometry and spectral evolution in 1A 1118-61: a comparison of the 2009 and 2026 outbursts
Kinjal Roy, Aru Beri, Rahul Sharma +1
We present a detailed spectro-temporal study of the Be X-ray binary pulsar during its brightest recorded outburst in 2026, using \textit{Swift} and \textit{NuSTAR} o…
Probing accretion dynamics and spin evolution in the X-ray pulsar RX J0520.5-6932 during its 2024 Outburst
Rahul Sharma, Aru Beri, Biswajit Paul +3
After nearly a decade of quiescence, the transient Be/X-ray binary pulsar RX J0520.5-6932 underwent an outburst in 2024. We performed X-ray monitoring of the source with NICER and…
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…
Thermonuclear X-ray bursts across the eclipse transitions in the LMXBs EXO 0748-676 and XTE J1710-281
Ketan Rikame, Biswajit Paul, Rahul Sharma +1
The primary radiation from thermonuclear X-ray bursts observed in the neutron star low-mass X-ray binary (LMXB) systems can interact with various parts of the binary system. This i…
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…
Probing the energy and luminosity-dependent spectro-timing properties of RX J0440.9+4431 with AstroSat
Rahul Sharma, Manoj Mandal, Sabyasachi Pal +3
The Be/X-ray binary pulsar RX J0440.9+4431 went through a giant outburst in December 2022 with a peak flux of 2.3 Crab in 15--50 keV. We studied the broad-band timing and spe…
Energy dependence of Quasi-periodic oscillations in accreting X-ray pulsars
Hemanth Manikantan, Biswajit Paul, Rahul Sharma +2
We present the results from an investigation of the energy dependence of Quasi-Periodic Oscillations (QPOs) exhibited by accreting X-ray pulsars using data from archival \textit{XM…
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…
Flares during Eclipses of High Mass X-ray Binary Systems Vela X-1, 4U 1700-37, and LMC X-4
Ketan Rikame, Biswajit Paul, Rahul Sharma +2
In eclipsing X-ray binary systems, the direct X-ray emission is blocked by the companion star during the eclipse. We observe only reprocessed emission that contains clues about the…
Detection of a cyclotron line in the Be X-ray pulsar IGR J060742205
Kinjal Roy, Rahul Sharma, Hemanth Manikantan +1
IGR J0607.4+2205 is a transient Be X-ray binary discovered two decades ago. IGR J0607.4+2205 underwent an outburst in 2023 during which it was observed twice with \textit{NuSTAR}.…
into the phase-dependent cyclotron line feature in XTE J1946+274: An and -HXMT view
Ashwin Devaraj, Rahul Sharma, Shwetha Nagesh +1
XTE J1946+274 is a Be/X-ray binary with a 15.8s spin period and 172 d orbital period. Using data of the 1998 outburst, a cyclotron line around 37 keV was report…
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…