Results 21 to 30 of about 34,380 (305)
A multi-wavelength view of magnetic flaring from PMS stars [PDF]
, 2018 Flares from the Sun and other stars are most prominently observed in the soft X-ray band. Most of the radiated energy, however, is released at optical/UV wavelengths.
Cody, A. M. +7 more
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Optical Photometry of Flares and Flare Statistics [PDF]
International Astronomical Union Colloquium, 1983 This review discusses optical observations of flares and the results gleaned from these. Excellent reviews of flare activity have been published in the past and one might mention in particular Kunkel (1975), Gershberg (1978) and Gurzadyan (1980). In general these have been more broadly based than the present review incorporating other aspects of flare ...
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An Optical and Infrared Time-Domain Study of the Supergiant Fast X-ray Transient Candidate IC 10 X-2 [PDF]
, 2017 We present an optical and infrared (IR) study of IC 10 X-2, a high-mass X-ray binary in the galaxy IC 10. Previous optical and X-ray studies suggest X-2 is a Supergiant Fast X-ray Transient: a large-amplitude (factor of $\sim$ 100), short-duration (hours
Boyer, Martha L. +7 more
core +2 more sources
Optical and Ultraviolet Stellar Flare Spectroscopy [PDF]
International Astronomical Union Colloquium, 1983 As for solar flares, one of the most physically revealing types of data for M-dwarf flares are high-resolution, time-resolved spectra. Due to the intrinsically faint nature of the M-dwarf stars, spectroscopic data has tended to be of low spectral (˜ 5 Ǻ) and temporal (˜ 5 min) resolution. However, with the development of image intensified spectrographs
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THE OPTICAL DEPTH OF WHITE-LIGHT FLARE CONTINUUM [PDF]
The Astrophysical Journal, 2010 The white-light continuum emission of a solar flare remains a puzzle as regards its height of formation and its emission mechanism(s). This continuum, and its extension into the near UV, contain the bulk of the energy radiated by a flare, and so its explanation is a high priority.
Potts, Hugh +3 more
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The Astrophysical Journal, 2023 We present light curves and flares from a 7 day, multiwavelength observational campaign of AU Mic, a young and active dM1e star with exoplanets and a debris disk. We report on 73 unique flares between the X-ray to optical data.
Isaiah I. Tristan +15 more
doaj +1 more source
RoboPol: Connection between optical polarization plane rotations and gamma-ray flares in blazars [PDF]
, 2017 We use results of our 3 year polarimetric monitoring program to investigate the previously suggested connection between rotations of the polarization plane in the optical emission of blazars and their gamma-ray flares in the GeV band. The homogeneous set
Angelakis, E. +23 more
core +3 more sources
Optical and Radio monitoring of S5 1803+74 [PDF]
, 2002 The optical (BVRI) and radio (8.4 GHz) light curves of S5 1803+784 on a time span of nearly 6 years are presented and discussed. The optical light curve showed an overall variation greater than 3 mag, and the largest changes occured in three strong ...
Bertaud C. +18 more
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The Astrophysical Journal Letters, 2023 The nuclear transient AT2019cuk/Tick Tock/SDSS J1430+2303 has been suggested to harbor a supermassive black hole (SMBH) binary near coalescence. We report results from high-cadence NICER X-ray monitoring with multiple visits per day from 2022 January to ...
Megan Masterson +19 more
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Optical properties of impulsive flares
The Astrophysical Journal Supplement Series, 1990 The optical and morphological properties of impulsive flares are examined, showing that all impulsive flares occur close to sunspots and on magnetic inversion lines with steep gradients. Impulsive flares are defined and flare brightness variations and the magnetic structure of flares are discussed.
Harold Zirin, Frances Tang
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