Brightest, hottest and shortest-duration X-ray Superflare ever observed on CC Eri using Swift
The flare F1 triggered Swift’s Burst Alert Telescope (BAT) on 2008 October 16 UT 11:22:52 (=T01) during a preplanned spacecraft slew....
Evolution of Temperature, emission measure, and abundances during flaring events on M-dwarf binary
Evolution of spectral parameters of EQ Peg have been shown. These parameters have been estimated from time-resolved spectroscopy. From...
Longest Duration X-ray Superflares ever observed on EQ Peg with AstroSat satellite
The longest duration X-ray Superflares ever observed on EQ Peg with AstroSat satellite is shown here. In the top panel, the...
Binding energy & binary separation vs. stellar mass of VLM binaries
(a) System Binding Energy versus Total Mass (primary + secondary) and (b) Binary Separation versus Total Mass is shown. The newly...
Variation of stellar spottedness with surface-temperature on active solar-type stars
The spottedness (S) vs. stellar effective temperature (T_eff) plot for F–M type stars taken from the catalog of McQuillan et al. (2014)....
​Discovery of companion to Very Low Mass binary using Very Large Telescope
Using the Very Large Telescope (VLT) of European Southern Observatory (ESO, Chile) specifically the Nasmyth Adaptive Optics System (NAOS)...
Broad-band linear polarization in late-type active FGK dwarfs
Polarimetric observations of stars in the sample were obtained during the years 2010–2014 using ARIES Imaging Polarimeter (AIMPOL;...
Starspots: Observation of photosphere, chromosphere, vs. corona
From top to bottom the X-ray, UV, and optical folded light curves are shown. Each folded light curve is binned at bin-size 0.1. The...
Starspot evolution and flip-flop cycle from long-term photometry on a K-dwarf
Parameters of K-dwarf LO Peg derived from modelling have been shown. From top to bottom – (a) V-band light curve of LO Peg (open...
Starspot Evolution on stellar surface on a F-type star constructed from Kepler observations
The F-type star KIC 6791060 was observed for four years from 13 December 2009 to 13 December 2013 by the Kepler satellite. The Kepler...