Takako T. Ishii (??)

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????? ?? 2003.04.21 Takako T. Ishii
(??) Flare Heating in Stellar Coronae V.L.Kashya
p1, J.J.Drake1, M.Güdel2, and M.Audard2 1
Harvard-Smithsonian Center for Astrophysics 2
Laboratory for Astrophysics, Paul Scherrer
Institute Switzerland ApJ, 580, 1118
2002 Dec. 1
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Abstract Stellar flare Occurrence rate,
power-law slope a Observed light curve EUVE
(Extreme Ultraviolet Explorer) / Deep survey
events data ?Modeled light curve detector
characteristics Three stars a FK Apr 2.60
0.34 V1054 Oph 2.74 0.35 AD Leo 2.03 2.32
Flare component dominate to the total flux ( gt
50 )
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Introduction Occurrence rate, power-law slope
a a gt 2 ? small scale flare dominate a lt 2
? large scale flare dominate Observed energy
range (stellar) E gt 1031 erg/s This paper,
modeling for E gt 1029 erg/s compare with
observed light curve
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Observation
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Observation
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Observation
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Modeling Flare occurrence Assume power-law
distribution total flux flare
background Flare Poisson process Compare the
modeled light curve with the observed light
curve ( detector characteristics) parameter
power-law index a cf. observed light curve ?
construct dN/dE
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Results
Observation
a1.8
a2.1
Model
a2.5
a3.0
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Reliability