AstroSat/LAXPC reveals the high-energy variability of GRS 1915+ 105 in the χ class

JS Yadav, R Misra, JV Chauhan… - The Astrophysical …, 2016 - iopscience.iop.org
We present the first quick look analysis of data from nine AstroSat's Large Area X-ray
Proportional Counter (LAXPC) observations of GRS 1915+ 105 during 2016 March when …

Investigating the energy-dependent temporal nature of black hole binary system H 1743-322

N Husain, A Garg, R Misra, S Sen - Monthly Notices of the Royal …, 2023 - academic.oup.com
Black hole X-ray binaries routinely exhibit quasi-periodic oscillations (QPOs) in their power
density spectrum. Studies of QPOs have demonstrated immense ability to understand these …

On the energy dependence of the QPO phenomenon in the black hole system MAXI J1535-571

A Garg, R Misra, S Sen - Monthly Notices of the Royal …, 2022 - academic.oup.com
Previous analysis of AstroSat observations of the black hole system MAXI J1535-571 have
revealed the presence of a strong Quasi-Periodic Oscillation (QPO) whose frequency is …

An Insight-HXMT View of the mHz Quasi-regular Modulation Phenomenon in the Black Hole X-Ray Binary 4U 1630–47

Z Yang, L Zhang, Y Huang, Q Bu, Z Zhang… - The Astrophysical …, 2022 - iopscience.iop.org
Here we report the spectral-timing results of the black hole X-ray binary 4U 1630–47 during
its 2021 outburst using observations from the Hard X-ray Modulation Telescope (Insight …

Identifying the radiative components responsible for quasi-periodic oscillations of black hole systems

A Garg, R Misra, S Sen - Monthly Notices of the Royal …, 2020 - academic.oup.com
While the dynamical origin of the variability observed in Galactic black hole systems, such as
quasi-periodic oscillations (QPOs), is still a matter of debate, insight into the radiative …

Unraveling the Hybrid Origins of the X-Ray Nonthermal Emission from IGR J17091–3624

Z Lin, Y Wang, S del Palacio, M Méndez… - The Astrophysical …, 2024 - iopscience.iop.org
We present a comprehensive study based on multiwavelength observations from the
NuSTAR, NICER, Swift, Fermi, NEOWISE, and ATCA telescopes during the 2022 outburst of …

Study of timing evolution from nonvariable to structured large-amplitude variability transition in GRS 1915+ 105 using AstroSat

D Rawat, M Pahari, JS Yadav, P Jain… - The Astrophysical …, 2018 - iopscience.iop.org
In this work, we present a∼ 90 ks continuous monitoring of the Galactic microquasar GRS
1915+ 105 with AstroSat when the source undergoes a major transition from a nonvariable …

The mHz quasi-regular modulations of 4U 1630− 47 during its 1998 outburst

QC Zhao, HX Yin, L Tao, ZX Yang, JL Qu… - Monthly Notices of …, 2023 - academic.oup.com
We present the results of a detailed timing and spectral analysis of the quasi-regular
modulation (QRM) phenomenon in the black hole X-ray binary 4U 1630− 47 during its 1998 …

Energy scaling of the “heartbeat” pulse width of GRS 1915+ 105, IGR J17091− 3624, and MXB 1730− 335 from Rossi-XTE observations

A Maselli, F Capitanio, M Feroci, F Massa… - Astronomy & …, 2018 - aanda.org
We investigate some key aspects of the “heartbeat” variability consisting of series of bursts
with a slow rise and a fast decay, thus far detected only in GRS 1915+ 105, IGR J17091 …

A timing view of the heartbeat state of GRS 1915+ 105

SP Yan, L Ji, M Méndez, SM Liu, N Wang… - Monthly Notices of …, 2017 - academic.oup.com
We present a timing analysis of two Rossi X-ray Timing Explorer observations of the
microquasar GRS 1915+ 105 during the heartbeat state. The phase–frequency–power maps …