110 citations · 404 across the 20 of their papers we have counts for
20 papers
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…
Probing spectral and timing properties of the X-ray pulsar RX J0440.9+4431 in the giant outburst of 2022-2023
Manoj Mandal, Rahul Sharma, Sabyasachi Pal +10
The X-ray pulsar RX J0440.9+4431 went through a giant outburst in 2022 and reached a record-high flux of 2.3 Crab, as observed by Swift/BAT. We study the evolution of different spe…
AstroSat and NuSTAR observations of XTE J1739-285 during the 2019-2020 outburst
Aru Beri, Rahul Sharma, Pinaki Roy +5
We report results from a study of XTE J1739-285, a transient neutron star low mass X-ray binary observed with AstroSat and NuSTAR during its 2019-2020 outburst. We detected accreti…
The AstroSat observation of accreting millisecond X-ray pulsar SAX J1808.4-3658 during its 2019 outburst
Rahul Sharma, Andrea Sanna, Aru Beri
We report on the analysis of the AstroSat dataset of the accreting millisecond X-ray pulsar SAX J1808.4-3658, obtained during its 2019 outburst. We found coherent pulsations at $\s…
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…
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…
Small-scale solar jet formation and their associated waves and instabilities
Samuel Skirvin, Gary Verth, José Juan González-Avilés +7
Studies on small-scale jets' formation, propagation, evolution, and role, such as type I and II spicules, mottles, and fibrils in the lower solar atmosphere's energetic balance, ha…
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…
Neutral atom scattering based mapping of atomically thin layers
Geetika Bhardwaj, Krishna Rani Sahoo, Rahul Sharma +2
Imaging surfaces using low energy neutral atom scattering is a relatively recent development in the field of microscopy. In this work we demonstrate that this technique is sensitiv…
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…
On the partial eruption of a bifurcated solar filament structure
Aabha Monga, Rahul Sharma, Jiajia Liu +4
The partial eruption of a filament channel with bifurcated substructures is investigated using datasets obtained from both ground-based and space-borne facilities. Small-scale flux…
Critical Science Plan for the Daniel K. Inouye Solar Telescope (DKIST)
Mark P. Rast, Nazaret Bello González, Luis Bellot Rubio +84
The Daniel K. Inouye Solar Telescope (DKIST) will revolutionize our ability to measure, understand and model the basic physical processes that control the structure and dynamics of…
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…
A broadband look of the Accreting Millisecond X-ray Pulsar SAX J1748.9-2021 using AstroSat and XMM-Newton
Rahul Sharma, Aru Beri, Andrea Sanna +1
SAX J1748.9-2021 is a transient accretion powered millisecond X-ray pulsar located in the Globular cluster NGC 6440. We report on the spectral and timing analysis of SAX J1748.9-20…
Deep-Learning continuous gravitational waves
Christoph Dreissigacker, Rahul Sharma, Chris Messenger +2
We present a first proof-of-principle study for using deep neural networks (DNNs) as a novel search method for continuous gravitational waves (CWs) from unknown spinning neutron st…
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…
Analysis of 3D plasma motions in a chromospheric jet formed due to magnetic reconnection
J. J. González-Avilés, F. S. Guzmán, V. Fedun +4
Within the framework of resistive MHD, implementing the C7 equilibrium atmosphere model and a 3D potential magnetic field realistic configuration, we simulate the formation of a pl…
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…