Detection of high-frequency optical oscillations on the flare star EV Lacertae

被引：0
|
作者：
Zhilyaev, BE
Romanyuk, YO
Verlyuk, IA
Svyatogorov, OA
Khalack, VR
Sergeev, AV
Konstantinova-Antova, RK
Antov, AP
Bachev, RS
Alekseev, IY
Chalenko, VE
Shakhovskoy, DN
Contadakis, ME
Avgoloupis, SJ
机构：
[1] Natl Acad Sci Ukraine, Main Astron Observ, UA-03680 Kiev, Ukraine
[2] Natl Acad Sci Ukraine, Int Res Ctr Astron Med & Ecol, UA-03680 Kiev, Ukraine
[3] Bulgarian Acad Sci, Inst Astron, BU-1784 Sofia, Bulgaria
[4] Crimean Astrophys Observ, UA-98409 Nauchnyi, Crimea, Ukraine
[5] Univ Thessaloniki, Dept Geodesy & Surveying, GR-54006 Thessaloniki, Greece
[6] Univ Thessaloniki, Dept Phys, Sect Astrophys Astron & Mech, GR-54006 Thessaloniki, Greece
[7] Kiev Branch, Isaac Newton Inst Chile, Kiev, Ukraine
来源：
ASTRONOMY & ASTROPHYSICS | 2000年 / 364卷 / 02期
关键词：
stars : flare; stars : oscillations; stars : individual : EV Lac;
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Many-site multichannel simultaneous observations of the flare star EV Lac revealed high-frequency brightness oscillations superimposed on the mean flare light curve. Oscillations occur at the earliest stage of a flare and are visible during the high state. Coherent oscillations of 26 and 13 sec were seen during three flare events. The pulsed fractions were 2.5% in the B band and 10-15% in the U band. This oscillatory phenomenon can be used to improve our understanding of the flare process.
引用
收藏
页码：641 / 645
页数：5
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