Results 11 to 20 of about 39,486 (294)

Flares in T Tauri stars [PDF]

International Astronomical Union Colloquium, 1990
This review concerns rapid variability, on time-scales of a few hours or less, occurring on T Tauri stars (TTS). There are several recent reviews on observed properties of TTS (e.g. Appenzeller & Mundt 1989, Bertout 1989, Gahm 1990a, Kuhi & Cram 1989), some with more emphasis on “flare-like” activity (Feigelson et al.
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GCVS problems with flare stars [PDF]

International Astronomical Union Colloquium, 1995
The astrometric aspect of cataloguing variable stars becomes more and more important. During the past thirty years there has been approximately an three-fold increase of the number of known variables; now the rate of new discoveries becomes extremely high, and we may expect a new twofold increase in a couple of years due to discoveries made with space ...
Elena V. Kazarovets, Nikolai N. Samus
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Constraints on Stellar Flare Energy Ratios in the NUV and Optical from a Multiwavelength Study of GALEX and Kepler Flare Stars

The Astrophysical Journal, 2023
We present a multiwavelength study of stellar flares on primarily G-type stars using overlapping time domain surveys in the near-ultraviolet (NUV) and optical regimes. The NUV (the Galaxy Evolution Explorer; GALEX) and optical (Kepler) wavelength domains
C. E. Brasseur, Rachel A. Osten, Isaiah I. Tristan, Adam F. Kowalski   +3 more
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The Soft X-ray Lightcurves of Partially Eclipsed Stellar Flares [PDF]

, 2011
Most stellar flares' soft X-ray lightcurves possess a `typical' morphology, which consists of a rapid rise followed by a slow exponential decay. However, a study of 216 of the brightest flares on 161 pre-main sequence stars, observed during the Chandra ...
Alencar, Antiochos, Aschwanden, Benz, Brown, Browning, C. P. Johnstone, Collier Cameron, Dunstone, Favata, Feigelson, Getman, Getman, Getman, Getman, Getman, Ilgner, K. V. Getman, Lin, López-Santiago, M. M. Jardine, Mullan, Neupert, Pandey, Pillitteri, Reale, Reale, S. G. Gregory, Sanz-Forcada, Sanz-Forcada, Schmitt, Schmitt, Skinner, Stelzer   +33 more
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Flare Activity and Cluster Membership Probability of Flare Stars [PDF]

International Astronomical Union Colloquium, 1995
Mirzoyan (1976) showed that the concentration of flare stars around the center of the Pleiades cluster (Alcyone) was the same, irrespective of their proper motions. At that time, however, proper motions of only a few flare stars were known. The result was confirmed on the basis of more extensive observational material (Chavushian 1979, Mirzoyan 1983 ...
L. V. Mirzoyan, V. V. Hambarian, A. L. Mirzoyan   +2 more
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Spots and Flares in Hot Main Sequence Stars Observed by Kepler, K2, and TESS

Frontiers in Astronomy and Space Sciences, 2021
About 22,000 Kepler stars, 7,000 K2 stars, and nearly 60,000 TESS stars from sectors 1–24 have been classified according to variability type. A large proportion of stars of all spectral types appear to have periods in their light curves consistent with ...
Luis A. Balona
doaj   +1 more source

Flare Activity Among Nearby Stars [PDF]

International Astronomical Union Colloquium, 1995
I selected the common objects from our Data Base on 234 UV Cet Flare Stars and Related Objects and the Third Catalogue of Nearby Stars by Gliese & Jahreiss (CNS-3). It is found that manifestation of flare activity (FA) (flares in any spectral region or photometric variability caused by spots) is observed on 143 flare stars (FS) out of the 3803 CNS ...
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Flare stars at radio wavelengths [PDF]

Symposium - International Astronomical Union, 1990
The radio emission from dMe flare stars is discussed using Very Large Array and Arecibo observations as examples. Active flare stars emit weak, unpolarized, quiescent radio radiation that may be always present. Although thermal bremsstrahlung and/or thermal gyroresonance radiation account for the slowly-varying, quiescent radio radiation of solar ...
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Investigating the Rotational Phase of Stellar Flares on M dwarfs Using K2 Short Cadence Data [PDF]

, 2018
We present an analysis of K2 short cadence data of 34 M dwarfs which have spectral types in the range M0 - L1. Of these stars, 31 showed flares with a duration between $\sim$10-90 min.
Doyle, J. G., Doyle, L., Ramsay, G., Scullion, E., Wu, K.   +4 more
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Estimating the frequency of extremely energetic solar events, based on solar, stellar, lunar, and terrestrial records [PDF]

, 2012
The most powerful explosions on the Sun [...] drive the most severe space-weather storms. Proxy records of flare energies based on SEPs in principle may offer the longest time base to study infrequent large events.
Aschwanden, Aschwanden, Audard, Audard, Basri, Benz, Benz, Berdyugina, C. J. Schrijver, Caballero-Lopez, Castagnoli, Cliver, Cliver, D. R. Soderblom, Dreschhoff, E. W. Cliver, E. W. Wolff, Emslie, Emslie, Endl, Ercolano, Field, Fletcher, Fuhrer, Gopalswamy, Gopalswamy, Güdel, Güdel, Güdel, Güdel, H. S. Hudson, Hall, Hapgood, Hawley, Hawley, Heikkilä, I. G. Usoskin, J. Beer, Jackman, Jackman, Jackman, Jokipii, Judge, K. G. McCracken, Kahler, Kane, Kovaltsov, Kretzschmar, Krucker, Kürster, Lal, Lange, Legrand, Lin, Lingenfelter, Lingenfelter, M. Güdel, Masarik, Masarik, Masarik, McCracken, McCracken, Metcalf, Neupert, Nishiizumi, Osten, Osten, Osten, Parnell, Potgieter, R. A. Osten, Raisbeck, Reames, Reames, Reames, Reedy, Rishbeth, Rouillard, Schaefer, Schrijver, Schrijver, Schrijver, Schrijver, Schrijver, Schrijver, Shea, Shea, Shimizu, Shimizu, Solanki, Space Studies Board, Steinhilber, Steinhilber, Stelzer, Stelzer, T. Peter, Taylor, Tranquille, Tsurutani, Tylka, Tylka, U. Baltensperger, Usoskin, Usoskin, Usoskin, Usoskin, Vainio, Van Hollebeke, Veronig, Veronig, Vonmoos, Walkowicz, Webber, Whitlow, Wiedenbeck, Wolff, Wolff, Woods, Woods, Zhang   +119 more
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