Results 1 to 10 of about 39,486 (294)
X-ray flares in Orion young stars. I. Flare characteristics [PDF]
The Astrophysical Journal, 2008 Pre-main sequence (PMS) stars are known to produce powerful X-ray flares which resemble magnetic reconnection solar flares scaled by factors up to 10^4.
Drake J. J. +13 more
core +2 more sources
Magnetic Activity of Different Types of Variable Stars Observed by TESS Mission
Universe, 2023 The investigation of the magnetic activity of different types of variable stars holds significant implications for our understanding of the physical processes and evolution of stars.
Ming Zhong +3 more
doaj +1 more source
Spectral Observations of Flare Stars [PDF]
Symposium - International Astronomical Union, 1990 Spectral observations of 6 flare stars in the Pleiades cluster are carried out which occupy different positions on the Hertzsprung-Russell diagram relative to the main sequence: above and below it. The spectral indices which are sensible to luminosity or temperature of the star photosphere are determined.
L.V. Mirzoyan +2 more
openaire +1 more source
Symposium - International Astronomical Union, 1994 The important role of flare stars (UV Ceti type variables) in astrophysics is due to the fact that the flare activity is not only typical for red stars with small masses but is a necessary stage during their evolution.
M. Tsvetkov, M. Chukova, K. Tsvetkova
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New EUV Selected Flare Stars [PDF]
International Astronomical Union Colloquium, 1995 The ROSAT Wide Field Camera all-sky EUV survey of 1990-91 identified over 200 active late-type stars (Pounds et al. 1993). Most of these were not known to be active prior to the survey and follow-up optical spectroscopy has been successful in selecting the most active dMe stars.
Bill Ball, Gordon Bromage
openaire +1 more source
The Kepler Catalog of Stellar Flares [PDF]
, 2016 A homogeneous search for stellar flares has been performed using every available Kepler light curve. An iterative light curve de-trending approach was used to filter out both astrophysical and systematic variability to detect flares.
Davenport, James R. A.
core +3 more sources
Flare Stars Database: Present Status [PDF]
International Astronomical Union Colloquium, 1995 AbstractAn updated data collection for UV Cet type stars and their registered flare events in stellar aggregates and in the solar neighbourhood during more than 9580 hours observing time is described. The Flare Stars Database (FSDB) presently includes 3127 entries for 1622 stars.
K. P. Tsvetkova +2 more
openaire +1 more source
Oscillations in stellar superflares [PDF]
, 2015 Two different mechanisms may act to induce quasi-periodic pulsations (QPP) in whole-disk observations of stellar flares. One mechanism may be magneto-hydromagnetic (MHD) forces and other processes acting on flare loops as seen in the Sun.
Balona, L. A. +5 more
core +2 more sources
Tidal Disruption Events from Eccentric Orbits and Lessons Learned from the Noteworthy ASASSN-14ko
The Astrophysical Journal, 2023 Stars grazing supermassive black holes (SMBHs) on bound orbits may survive tidal disruption, causing periodic flares. Inspired by the recent discovery of the periodic nuclear transient ASASSN-14ko, a promising candidate for a repeating tidal disruption ...
Chang Liu +7 more
doaj +1 more source
An “A star” on an M star during a flare within a flare [PDF]
Proceedings of the International Astronomical Union, 2010 AbstractM dwarfs produce explosive flare emission in the near-UV and optical continuum, and the mechanism responsible for this phenomenon is not well-understood. We present a near-UV/optical flare spectrum from the rise phase of a secondary flare, which occurred during the decay of a much larger flare.
Kowalski, Adam F. +4 more
openaire +2 more sources