46 citations · 291 across the 15 of their papers we have counts for
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Broadband X-ray properties of black holes GRS 1758-258 and 1E 1740.7-2942: AstroSat and NuSTAR results
Bhuvana G. R., Aneesha U., Radhika D. +4
We present the results on broadband X-ray properties of persistent black hole binaries GRS 1758258 and 1E 1740.72942 using AstroSat, NuSTAR and Swift-XRT observations carried…
Unraveling the foretime of GRS 1915+105 using AstroSat observations: Wide-band spectral and temporal characteristics
Athulya M. P., Radhika D., V. K. Agrawal +4
We present a comprehensive study of GRS 1915+105 in wide energy band ( keV) using AstroSat observations during the period of . The MAXI X-ray lightcurve of the s…
Revealing the nature of the transient source MAXI J0637-430 through spectro-temporal analysis
Blessy E. Baby, Bhuvana G. R., Radhika D. +3
We study the spectral and temporal properties of MAXI J0637-430 during its 2019-2020 outburst using \textit{NICER}, \textit{AstroSat} and \textit{Swift-XRT} data. The source was in…
Multi-mission view of extragalactic black hole X-ray binaries LMC X-1 and LMC X-3: evolution of broadband spectral features
Bhuvana G. R., Radhika D., Anuj Nandi
Extragalactic black hole X-ray binaries LMC X-1 and LMC X-3 are the persistent sources, usually found in soft spectral state. We present the results from spectral and timing study…
Broadband 'spectro-temporal' features of extragalactic black hole binaries LMC X-1 and LMC X-3: An AstroSat perspective
Bhuvana G. R., Radhika D., V. K. Agrawal +2
We present the first results of extragalactic black hole X-ray binaries LMC X-1 and LMC X-3 using all the archival and legacy observations by AstroSat during the period of $2016-20…
Constraining the mass of the black hole GX 339-4 using spectro-temporal analysis of multiple outbursts
Sreehari H., Nirmal Iyer, Radhika D. +2
We carried out spectro-temporal analysis of the archived data from multiple outbursts spanning over the last two decades from the black hole X-ray binary GX 339-4. In this paper, t…
Broad-band spectral evolution and temporal variability of IGR J17091-3624 during its 2016 outburst : SWIFT and NuSTAR results
Radhika D., H. Sreehari, A. Nandi +2
We report on the 2016 outburst of the transient Galactic Black Hole candidate IGR J17091-3624 based on the observation campaign carried out with SWIFT and NuSTAR. The outburst prof…
Accretion Flow Dynamics During 1999 Outburst of XTE J1859+226 - Modeling of Broadband Spectra and Constraining the Source Mass
A. Nandi, S. Mandal, H. Sreehari +6
We examine the dynamical behavior of accretion flow around XTE J1859+226 during the 1999 outburst by analyzing the entire outburst data ( 166 days) from RXTE Satellite. Towar…
Observational aspects of Outbursting Black Hole Sources - Evolution of Spectro-Temporal features and X-ray Variability
H. Sreehari, Anuj Nandi, D. Radhika +2
We report on our attempt to understand the outbursting profile of Galactic Black Hole (GBH) sources, keeping in mind the evolution of temporal and spectral features during the outb…
'Spectro-temporal' variabilities and possible physical mechanism for Jet ejections
Radhika D., A. Nandi, V. K. Agrawal +1
In this paper, we attempt to find out the `spectro-temporal' characteristics during the jet ejection, of several outbursting Galactic black hole sources based on RXTE-PCA/HEXTE dat…
SWIFT view of the 2015 outburst of GS 2023+338 (V404 Cyg): complex evolution of spectral and temporal characteristics
Radhika D., A. Nandi, V. K. Agrawal +1
We study the spectral and temporal characteristics of the source GS 2023338 (V404 Cyg) during the initial phase of its June 2015 outburst, over the energy range of 0.5 - 150 keV…
RXTE observations and state transition in MAXI J1836-194
D Radhika, M C Ramadevi, S Seetha
We present the results of analysis of the X-ray transient source MAXI J1836-194 during its outburst in August 2011. MAXI GSC detected the source on 30th August 2011, when it starte…
Is the `disappearance' of low-frequency QPOs in the power spectra a general phenomenon for Disk-Jet symbiosis?
A. Nandi, Radhika. D, S. Seetha
One of the best possible ways to look for disk-Jet symbiosis in galactic Black Holes is to study the correlation between X-ray and radio emissions. Beyond this study, is there any…
`Spectro-temporal' characteristics and disk-jet connection of the outbursting black hole source XTE J1859+226
D. Radhika, A Nandi
We re-investigated the `spectro-temporal' behaviour of the source XTE J1859+226 in X-rays during its outburst phase in 1999, by analysing the RXTE PCA/HEXTE data in 2 - 150 keV spe…
Disk-Jet connection in outbursting Black Hole sources
D. Radhika, A. Nandi, S. Seetha
We explored the `spectro - temporal' behaviour of outbursting Black Hole sources in X-rays, at the time of jet ejections which are observed as radio flares. The energy dependent ev…