19 citations · 35 across the 4 of their papers we have counts for
7 papers
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…
Coronae of an active fast rotator FR Cnc
Jeewan C. Pandey, Gurpreet Singh, Subhajeet Karmakar +4
We present the first detailed X-ray study and simultaneous optical observations of the active fast rotating star FR Cnc. The X-ray spectra are found to be explained by two-temperat…
Detection and characterisation of two VLM binaries: LP 1033-31 and LP 877-72
Subhajeet Karmakar, A. S. Rajpurohit, F. Allard +1
Using the high-resolution near-infrared adaptive optics imaging from the NaCo instrument at the Very Large Telescope, we report the discovery of a new binary companion to the M-dwa…
Magnetic activities on active solar-type stars
Subhajeet Karmakar, Jeewan C. Pandey, Sachindra Naik +2
We present results obtained from the studies of magnetic activities on four solar-type stars (F-type star KIC 6791060, K-type star LO Peg, and two M-type planet-hosting stars K2-33…
An F-type ultra-fast rotator KIC 6791060: Starspot modulation and Flares
Subhajeet Karmakar, Jeewan C. Pandey
Making use of the data obtained from Kepler satellite, we have analysed an F-type ultra-fast rotator KIC 6791060. We derive a rotational period of 0.343650.00004 d. Multiple p…
First Evidence of the Frequency Filtering of Magnetoacoustic Waves in the Flaring Star EK Dra
A. K. Srivastava, J. C. Pandey, Subhajeet Karmakar +7
Using the data obtained from XMM-Newton, we show the gradual evolution of two periodicities of ~4500 s and ~2200 s in the decay phase of the flare observed in a solar analog EK Dra…