QUASI-PERIODIC PULSATIONS IN FLARES OF UV CETI-TYPE STARS
Section: STARS AND THE INTERSTELLAR MEDIUM
Authors:
1.
Togliatti State University
Special Astrophysical Observatory of the Russian Academy of Sciences
Special Astrophysical Observatory of the Russian Academy of Sciences
2.
University of Warwick
Ventspils University of Applied Sciences
Ventspils University of Applied Sciences
3.
Special Astrophysical Observatory of the Russian Academy of Sciences
Kazan Federal University
Kazan Federal University
4.
Institute of Physics of the Czech Academy of Sciences
5.
Special Astrophysical Observatory of the Russian Academy of Sciences
6.
Astronomical Institute of Czech Academy of Sciences
Type:
Сonference article
Published:
27.12.2024
Subject area:
52
53
520
521
523
524
52-1
52-6
41.00
29.35
29.31
29.33
29.27
29.05
03.06.01
03.05.01
03.04.03
2
223
614
6135
SCI004000
SCI005000
53
520
521
523
524
52-1
52-6
41.00
29.35
29.31
29.33
29.27
29.05
03.06.01
03.05.01
03.04.03
2
223
614
6135
SCI004000
SCI005000
Language:
English
Keywords:
stars: flares, oscillations, low-mass
Abstract (English):
Quasi-periodic pulsations (QPPs) were observed in the light curves of solar and stellar flares. The number of stellar QPP events is quite small (213 in 2021), which is why they are interesting. QPPs can be used to investigate the properties of flare regions and they are still a problem for flare models. QPPs were identified in stellar flares across a wide range of wavelengths, from radio to X-rays. In the optical band they are searched mainly in the Kepler and TESS data. The periods of QPPs detected from these sources are longer (tens of minutes) than from the high cadence data. Observations with the 6-m telescope BTA and the MANIA complex, as well as the space observatory GALEX, reveal QPP periods of only tens of seconds. On the other hand, solar flares are typically weaker (energies
Quasi-periodic pulsations (QPPs) were observed in the light curves of solar and stellar flares. The number of stellar QPP events is quite small (213 in 2021), which is why they are interesting. QPPs can be used to investigate the properties of flare regions and they are still a problem for flare models. QPPs were identified in stellar flares across a wide range of wavelengths, from radio to X-rays. In the optical band they are searched mainly in the Kepler and TESS data. The periods of QPPs detected from these sources are longer (tens of minutes) than from the high cadence data. Observations with the 6-m telescope BTA and the MANIA complex, as well as the space observatory GALEX, reveal QPP periods of only tens of seconds. On the other hand, solar flares are typically weaker (energies
Keywords:
stars: flares, oscillations, low-mass
stars: flares, oscillations, low-mass
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3. Plokhotnichenko V.L., Beskin G.M., de Boer V.G., et al., 2021, Astrophysical Bulletin, 76, 4, p. 472
