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Statistical Study of Solar White-light Flares and Comparison with Superflares on Solar-type Stars

机译:太阳能白光耀斑的统计研究与太阳能型恒星上超空气的比较

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Recently, many superflares on solar-type stars were discovered as white-light flares (WLFs). A correlation between the energies (E) and durations (t) of superflares is derived as t ∞ E~(0.39), and this can be theoretically explained by magnetic reconnection (t oc E~(1/3)). In this study, we carried out a statistical research on 50 solar WLFs with SDO/HMI to examine the t-E relation. As a result, the t-E relation on solar WLFs (t oc E~(0.38)) is quite similar stellar superflares, but the durations of stellar superflares are much shorter than those extrapolated from solar WLFs. We present the following two interpretations; (1) in solar flares, the cooling timescale of WL emission may be longer than the reconnection one, and the decay time can be determined by the cooling timescale; (2) the distribution can be understood by applying a scaling law t oc E~(1/3)B~(-5/3) derived from the magnetic reconnection theory.
机译:最近,太阳能型恒星上的许多超空手被发现为白光耀斑(WLF)。 SuperFrares的能量(e)和持续时间(T)之间的相关性衍生为t∈E〜(0.39),并且可以通过磁重新连接理论解释(t oc e〜(1/3))。在这项研究中,我们对50个太阳能WLF进行了统计研究,具有SDO / HMI来检查T-E关系。结果,对太阳能WLF的T-e关系(TOC E〜(0.38))是相似的恒星超空氟色,但恒星超空峡的持续时间远比太阳能WLF推断的持续时间要短得多。我们提出了以下两种解释; (1)在太阳耀斑中,WL发射的冷却时间质可以长于重新连接,并且衰减时间可以通过冷却时间尺寸来确定; (2)通过应用来自磁重构理论的缩放法T OC E〜(1/3)B〜(-5/3),可以理解分布。

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