6 citations · 19 across the 21 of their papers we have counts for
22 papers
Demonstrating the Time-Domain Capabilities of the 4-m International Liquid Mirror Telescope: An Early Census of Transient and Variable Detections
Kumar Pranshu, Kuntal Misra, Bhavya Ailawadhi +11
The PyLMT transient detection pipeline has been operational since November 2023, detecting transient and variable objects in the ILMT images in almost real time. Using the image su…
Probing Flare-Associated Eruptions on AB Doradus via X-ray Absorption Variations
Shweta Didel, Jeewan C Pandey, Abhishekh K Srivastava
In this work, we investigate eruptive phenomena associated with X-ray flares on AB Doradus using observations from XMM-Newton. Our aim is to detect such events with the help of con…
V515 And: An Intermediate Polar in the Period Gap Exhibiting Outbursts
Srinivas M Rao, Jeewan C Pandey, Nikita Rawat +4
Using long-term observations from the Transiting Exoplanet Survey Satellite (TESS) along with spectroscopic observations from the 3.6 m Devasthal Optical Telescope (DOT), we presen…
Observations of Binary Stars with the 1.3-m Devasthal Fast Optical Telescope Using Speckle Interferometry: An Attempt
Km Nitu Rai, Arjun Dawn, Neelam Panwar +3
We present a feasibility study of implementing optical interferometry and speckle techniques with the 1.3-m Devasthal Fast Optical Telescope (DFOT) at Aryabhatta Research Institute…
Long-term Optical Photometry of V709 Cas Using TESS : Refined Periods and Accretion Geometry
Srinivas M Rao, Jeewan C Pandey, Nikita Rawat +2
Utilizing high-cadence and long-term optical photometry from the Transiting Exoplanet Survey Satellite (TESS ), we conducted a time-resolved timing analysis of the Intermediate Pol…
Precise Timing Analysis of Four Magnetic Cataclysmic Variables with TESS
Srinivas M Rao, Jeewan C Pandey, Nikita Rawat +2
We analysed high time-resolution optical photometric data from the Transiting Exoplanet Survey Satellite (TESS) to study the timing behaviour of four intermediate polar-like object…
Long-term investigation of an open cluster Berkeley 65
Tarak Chand, Saurabh Sharma, Koshvendra Singh +7
We present a decade-long investigation of a poorly studied cluster, Berkeley 65 (Be 65), using deep optical data from the telescopes of ARIES, Nainital Observatory. We estimate its…
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…
AstroSat investigation of X-ray flares on two active K-M systems: CC Eri and AB Dor
Subhajeet Karmakar, Jeewan C. Pandey, Nikita Rawat +2
We present an X-ray and UV investigation of five X-ray flares detected on two active systems, CC Eri and AB Dor, using the AstroSat observatory. The peak X-ray luminosities of the…
Near-UV and optical spectroscopic investigation of late-type stars from MIRA/Oliver Observing Station
Subhajeet Karmakar, Avrajit Bandyopadhyay, Wm. Bruce Weaver +4
Late-type stars are the most abundant in the galactic stellar population. These stars, with a similar internal structure to the Sun, are expected to have solar-like atmospheres. In…
X-ray observations of the Intermediate Polar TX Col
Jeewan Chandra Pandey, Nikita Rawat, Srinivas M. Rao +2
We present the timing analysis of the intermediate polar TX Col in the X-ray band using the observations made by Chandra, Swift, and Suzaku during the years 2000, 2007, and 2009, r…
Timing Analysis of the Intermediate Polar V709 Cas
Srinivas M Rao, Jeewan Chandra Pandey, Nikita Rawat +1
We have carried detailed time-resolved timing analysis of an intermediate polar V709 Cas using the long-baseline, short-cadence optical photometric data from the Transiting Exoplan…
FR Cnc Revisited: Photometry, Polarimetry and Spectroscopy
A. Golovin, M. C. Galvez-Ortiz, M. Hernan-Obispo +12
Here we present the study of FR Cnc, a young, active and spotted star. We performed analysis of ASAS-3 (The All Sky Automated Survey) data for the years 2002-2008 and amended the v…
Stellar contents and Star formation in the young cluster Stock 18
Himali Bhatt, Ram Sagar, J. C. Pandey
We have carried out deep (V21 mag) \ubvri photometric study of the star cluster Stock 18. These along with archival Infrared data have been used to derive the basic cluster p…