19 citations · 56 across the 10 of their papers we have counts for
13 papers · 1 filter
Quiescent and flaring states of three active stars: V834 Tau, LQ Hya, and BY Dra
Gurpreet Singh, Jeewan C. Pandey, Subhajeet Karmakar
We present a detailed X-ray study of the quiescent and flaring coronae of three active main-sequence K-type stars, V834 Tau, LQ Hya, and BY Dra, using \textit{XMM-Newton} observati…
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…
Investigation of very low mass binaries using VLT/NaCo
Subhajeet Karmakar, Arvind Singh Rajpurohit, Derek Homeier
Context: Most stars in the galactic stellar population are low-mass stars. Very low-mass (VLM) stars are a subset of the low-mass stars typically defined in terms of the stellar ma…
Swift and XMM-Newton observations of an RS CVn type eclipsing binary SZ Psc: Superflare and coronal properties
Subhajeet Karmakar, Sachindra Naik, Jeewan C. Pandey +1
We present an in-depth study of a large and long duration (1.3 days) X-ray flare observed on an RS CVn type eclipsing binary system SZ Psc using observations from Swift observat…
AstroSat observations of long-duration X-ray superflares on active M-dwarf binary EQ Peg
Subhajeet Karmakar, Sachindra Naik, Jeewan C. Pandey +1
We present a comprehensive study of three large long-duration flares detected on an active M-dwarf binary EQ Peg using the Soft X-Ray Telescope of the AstroSat observatory. The pea…