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Short-duration stellar flares from GALEX & Kepler
We report on a population of short-duration near-ultraviolet (NUV) flares in stars observed by the Kepler and Galaxy Evolution Explorer (GALEX) missions. We analyzed the NUV... -
EvryFlare. I. Cool stars's flares in southern sky
We search for superflares from 4068 cool stars in 2+yr of Evryscope photometry, focusing on those with high-cadence data from both Evryscope and the Transiting Exoplanet Survey... -
Global energetics of solar flares. VIII.
One of the key problems in solar flare physics is the determination of the low-energy cut-off: the value that determines the energy of nonthermal electrons and hence flare... -
BVRI photom. of DV Psc and known short-period EBs
Using 27 sets of new multiband photometry light curves acquired from our long-term photometric campaign carried out in the last 5yr and high-resolution spectroscopic data from... -
Optical follow-up of ASAS-SN M dwarf flares
The All-sky Automated Survey for Supernovae (ASAS-SN) is the only project in existence to scan the entire sky in optical light approximately every day, reaching a depth of... -
Sun active regions from 1976-2017
The purpose of this paper is to show that large active regions (ARs) with different magnetic configurations have different contributions to short-term and long-term variations... -
K2 ultracool dwarfs survey. III. M6-L0 flares
We report the white light flare rates for 10 ultracool dwarfs using Kepler K2 short-cadence data. Among our sample stars, two have spectral type M6, three are M7, three are M8,... -
Luminosity functions of tidal disruption flares
The tidal disruption of a star by a massive black hole is expected to yield a luminous flare of thermal emission. About two dozen of these stellar tidal disruption flares (TDFs)... -
Statistical studies of solar white-light flares
Recently, many superflares on solar-type stars have been discovered as white- light flares (WLFs). The statistical study found a correlation between their energies (E) and... -
Flaring activity of M dwarfs in the Kepler field
Flare events are mainly due to magnetic reconnection and thus are indicative of stellar activity. The Kepler Space Observatory records numerous stellar activities with... -
The solar flare complex network
We investigate the characteristics of the solar flare complex network. The limited predictability, nonlinearity, and self-organized criticality of the flares allow us to study... -
Complex network for solar active regions
In this paper we developed a complex network of solar active regions (ARs) to study various local and global properties of the network. The values of the Hurst exponent... -
Flare events in M dwarf of M37
Based on one-month long MMT time-series observations of the open cluster M37, we monitored light variations of nearly 2500 red dwarfs and successfully identified 420 flare... -
Global energetics of solar flares. II.
We present the second part of a project on the global energetics of solar flares and coronal mass ejections that includes about 400 M- and X-class flares observed with the... -
Gamma-ray burst flares: X-ray flaring
We present a catalog of 498 flaring periods found in gamma-ray burst (GRB) light curves taken from the online Swift X-Ray Telescope GRB Catalogue (Evans et al.... -
BR photometry of 2012 precursor flare in OJ287
We have studied three most recent precursor flares in the light curve of the blazar OJ 287 while invoking the presence of a precessing binary black hole in the system to explain... -
Solar electron events from 1995 to 2005 with WIND/3DP
We survey the statistical properties of 1191 solar electron events observed by the WIND 3DP instrument from <1keV to >~300keV for a solar cycle (1995 through 2005). After... -
Solar flares observed with GOES and AIA
We explore the spatio-temporal evolution of solar flares by fitting a radial expansion model r(t) that consists of an exponentially growing acceleration phase, followed by a... -
HST monitoring of flaring stars in the Galactic bulge
We utilize the Sagittarius Window Eclipsing Extrasolar Planet Search Hubble Space Telescope/Advanced Camera for Surveys data set for a Deep Rapid Archival Flare Transient Search... -
Radio & optical observation of UX Arietis
We have observed UX Arietis at C band (6cm) for 3 weeks with four VLA antennas. The temporal coverage during the program was approximately three scans per day. A few days into...