7 papers
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…
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…
Reprocessing of X-rays emission in Ultra-Luminous X-ray sources
Manish Kumar, Rahul Sharma, Biswajit Paul
With the discovery of pulsations in some of the ultra-luminous X-ray sources (ULXs), it is quite clear that most of the ULXs harbor either a neutron star or a stellar mass black ho…
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…
Unveiling the intensity-dependent wake structure of Vela X-1 using MAXI/GSC
Abhisek Tamang, Kinjal Roy, Hemanth Manikantan +2
Context. Vela X-1 is among the earliest discovered high-mass X-ray binary (HMXB) pulsars. In such systems, the companion's stellar wind is strongly affected by ionisation from X-ra…
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…