6 citations · 19 across the 21 of their papers we have counts for
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Characterizing Superflares in HR 1099 using Temporal and Spectral Analysis of XMM-Newton Observations
Shweta Didel, Jeewan C Pandey, A. K. Srivastava
In the present paper, we analyze three energetic X-ray flares from the active RS CVn binary HR 1099 using data obtained from XMM-Newton. The flare duration ranges from 2.8 to 4.1 h…
Simultaneous X-ray and optical polarization observations of the blazar Mrk 421
Athira M. Bharathan, C. S. Stalin, S. Sahayanathan +7
We present near-simultaneous X-ray and optical polarization measurements in the high synchrotron peaked (HSP) blazar Mrk 421. The X-ray polarimetric observations were carried out u…
Indications of magnetic accretion in Swift J0826.2-7033
Nikita Rawat, Domitilla De Martino, Koji Mukai +3
We present our findings from the first long X-ray observation of the hard X-ray source Swift J0826.2-7033 with XMM-Newton, which has shown characteristics of magnetic accretion. Th…
Study of a red clump giant, KIC~11087027, with high rotation and strong infrared excess -- Evidence of tidal interaction for high lithium abundance
Raghubar Singh, Anohita Mallick, Bacham E. Reddy +2
This paper presents results from Kepler photometric light curves and high-resolution spectroscopic study of a super Li-rich giant KIC11087027. Using the light curve analysis, we me…
Multiwavelength view of massive binaries
Bharti Arora, Michael De Becker, Jeewan C. Pandey
The high luminosity of massive, early-type stars drives strong stellar winds through line scattering of the stars continuum radiation. Their momenta contribute substantially to the…
Coronal modulation in the ultra-fast rotator LO Peg
Gurpreet Singh, Jeewan Chandra Pandey, Umesh Yadava
We present coronal imaging of the ultra-fast rotator, LO Peg, using the X-ray observations from XMM-Newton. The X-ray light curves show one strong flare at the end of observation,…
A comprehensive X-ray analysis of the massive O-type binary HD93250 over two decades
Bharti Arora, M. De Becker, Jeewan C. Pandey
Massive star winds are known to be responsible for X-ray emission arising from wind plasma heated by the strong shocks up to the temperature of 10--10 K in case of collidin…
AB Dor: Coronal imaging and activity cycles
Gurpreet Singh, Jeewan C. Pandey
Using long-term X-ray observations, we present the short-term and long-term X-ray variability analysis of the ultra-fast rotating active star AB Dor. Flaring events are common in X…
A chemodynamical analysis of bright metal-poor stars from the HESP-GOMPA survey -- Indications of a non-prevailing site for light r-process elements
Avrajit Bandyopadhyay, Timothy C Beers, Rana Ezzeddine +5
We present a comprehensive analysis of the detailed chemical abundances for a sample of 11 metal-poor, very metal-poor and extremely metal-poor stars ([Fe/H] = -1.65 to [Fe/H] = -3…