A Statistical Study of Gamma-Ray Emitting Solar Flares Observed with Yohkoh

Matsumoto Yukari; Makishima Kazuo; Kotoku Juna€?ichi; Yoshimori Masato; Suga Kazuharu; Kosugi Takeo; Masuda Satoshi; Morimoto Kouji

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A Statistical Study of Gamma-Ray Emitting Solar Flares Observed with Yohkoh

机译：Yohkoh观测到的伽马射线太阳耀斑的统计研究

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Gamma-rayemittingsolarflaresobservedwithYohkohwereanalyzedfromastatisticalviewpoint.Thefour-bandhardX-ray(15a€“95a€‰keV)photometricdata,takenwiththeHardX-rayTelescopeonboardYohkoh,wereutilizedincombinationwiththespectro-photometricgamma-ray(0.2a€“30a€‰MeV)dataobtainedwiththeGamma-RaySpectrometer.TheGOESclasswasalsoincorporated.Outof2788X-rayflaresobservedfrom1991Octoberto2001December,178eventswithstronghardX-rayemissionwereselected.Amongthem,40flareswerefurtherfoundtoshowsignificantgamma-rayemission.Afractaldimensionanalysisandmulti-bandcolora€“colorplotsofthe40flaressuggestthattheirsoftX-raytoMeVgamma-rayspectralenergydistributionsinvolveatleastfourindependentparameters.Theseare:(1)theoverallflaresize;(2)therelativeintensitiesofthethermalvs.non-thermalsignals;(3)thegamma-raytohardX-rayintensityratio;and(4)thehardX-rayspectralslope.Theseresultsareexaminedforpossibleselectioneffects.Also,themeaningsofthethirdparameterarebrieflyconsidered.

机译：伽玛rayemittingsolarflaresobservedwithYohkohwereanalyzedfromastatisticalviewpoint.Thefour-bandhardX射线（15A€“95A€‰千电子伏）photometricdata，takenwiththeHardX-rayTelescopeonboardYohkoh，wereutilizedincombinationwiththespectro-photometricgamma射线（0.2A€“30A€‰兆电子伏）dataobtainedwiththeGamma-RaySpectrometer.TheGOESclasswasalsoincorporated.Outof2788X-rayflaresobservedfrom1991Octoberto2001December，178eventswithstronghardX -rayemissionwereselected.Amongthem，40flareswerefurtherfoundtoshowsignificantgamma-rayemission.Afractaldimensionanalysisandmulti-bandcolora€“colorplotsofthe40flaressuggestthattheirsoftX-raytoMeVgamma-rayspectralenergydistributionsinvolveatleastfourindependentparameters.Theseare：（1）theoverallflaresize;（2）therelativeintensitiesofthethermalvs.non-thermalsignals;（3）thegamma-raytohardX-rayintensityratio;和（4）thehardX -射线光谱坡度。对结果进行了检查，以求可能的选择效果。此外，还简要考虑了第三参数的含义。

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《PASJ: Publications of the Astronomical Society of Japan》 |2005年第1期|共页
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Matsumoto Yukari; Makishima Kazuo; Kotoku Juna€?ichi; Yoshimori Masato; Suga Kazuharu; Kosugi Takeo; Masuda Satoshi; Morimoto Kouji;
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机译：用Yohkoh观测到的发射伽玛射线的太阳耀斑的统计研究
2. STATISTICAL STUDY OF THE RECONNECTION RATE IN SOLAR FLARES OBSERVED WITH YOHKOH SXT [J] . Kaori Nagashima, Takaaki Yokoyama The Astrophysical journal . 2006,第1Pt1期

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3. Statistical Study of the Reconnection Rate in Solar Flares Observed with Yohkoh SXT [J] . Kaori Nagashima, Takaaki Yokoyama The Astrophysical journal . 2006,第1期

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A Statistical Study of Gamma-Ray Emitting Solar Flares Observed with Yohkoh

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