Results 31 to 40 of about 34,380 (305)
Multiwavelength Observations of 6 BL Lac Objects in 2008-2012
EPJ Web of Conferences, 2013 We present results of 4 years of VLBA monitoring along with γ-ray and optical R-band photometric observations of 6 BL Lac objects (3C 66A, S5 0716+71, PKS 0735+17, S4 0954+68, W Com, and OT 081).
Morozova D.A. +7 more
doaj +1 more source
A Possible Mechanism for the “Late Phase” in Stellar White-light Flares
The Astrophysical Journal, 2023 M dwarf flares observed by the Transiting Exoplanet Survey Satellite (TESS) sometimes exhibit a peak-bump light-curve morphology, characterized by a secondary, gradual peak well after the main, impulsive peak.
Kai E. Yang +3 more
doaj +1 more source
, 2017 Transitional millisecond pulsars are systems that alternate between an accreting low-mass X-ray binary (LMXB) state, and a non-accreting radio pulsar state.
Hakala, Pasi, Kajava, Jari J. E.
core +1 more source
Flares from the Tidal Disruption of Stars by Massive Black Holes [PDF]
, 1997 Tidal disruption flares are differentiated into two classes -- those which are sub-Eddington and those which radiate near the Eddington limit. Flares from black holes above ~2 x 10^7 M_\odot will generally not radiate above the Eddington limit.
Ulmer, Andrew
core +3 more sources
Magnetic Field Amplification and Flat Spectrum Radio Quasars
, 2014 We perform time-dependent, spatially-resolved simulations of blazar emission to evaluate several flaring scenarios related to magnetic-field amplification and enhanced particle acceleration.
Bailyn, Charles D. +12 more
core +1 more source
Swift and Fermi observations of X-ray flares: the case of Late Internal Shock [PDF]
, 2014 Simultaneous Swift and Fermi observations of gamma-ray bursts (GRBs) offer a unique broadband view of their afterglow emission, spanning more than ten decades in energy.
Burgess, J. M. +7 more
core +4 more sources
Optical Flare Search on the RS CVn-type flare stars AR Lacertae
, 2022 We present the results of fast spectrophotometry of flares on the RS CVn-type star AR Lac with a time resolution of 34 s and a spectroscopic resolution R $\sim $ 1300. The observations were performed on July 21-22, 2021 with the 2.0 m Karl Zeiss telescope at the Terskol Observatory.
Markus, Ya. S., Zhilyaev, B. E.
openaire +2 more sources
Optical and near-infrared photometric monitoring of the transient X-ray binary A0538-66 with REM [PDF]
, 2016 The transient Be/X-ray binary A0538-66 shows peculiar X-ray and optical variability. Despite numerous studies, the intrinsic properties underlying its anomalous behaviour remain poorly understood.
Covino, S. +5 more
core +2 more sources
Correlated optical, X-ray, and $-ray flaring activity seen with INTEGRAL during the 2015 outburst of V404 Cygni [PDF]
, 2015 Reproduced with permission from Astronomy & Astrophysics. © 2015 ESO.After 25 years of quiescence, the microquasar V404 Cyg entered a new period of activity in June 2015.
A. Domingo +61 more
core +15 more sources
Optical Polarimetry and Radio Observations of PKS1510-089 between 2009 and 2013
Galaxies, 2018 The blazar PKS 1510-089 has shown intense activity at γ -rays in the recent years. In this work, we discussed the results of our 7 mm radio continuum and optical polarimetric monitoring between 2009 and 2013. In 2009, we detected a large rotation of
Pedro P. B. Beaklini +2 more
doaj +1 more source