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首页> 外文期刊>The Astrophysical journal >DETECTION OF NONTHERMAL RADIO EMISSION FROM CORONAL X-RAY JETS
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DETECTION OF NONTHERMAL RADIO EMISSION FROM CORONAL X-RAY JETS

机译:冠状X线射野的非热辐射发射检测

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We report the detection of a type Ⅲ burst in association with a dynamic X-ray coronal jet observed by Yohkoh/SXT. The type Ⅲ burst observed with the Nancay (France) multifrequency radioheliograph is spatially and temporally coincident with the X-ray jet. The radio locations at different frequencies (236.6 and 164 MHz) are aligned along the length of the jet. The observation of the type Ⅲ burst in association with the X-ray jet implies the acceleration of electrons to several tens of keV, along with the heating responsible for the production of soft X-rays. This association implies the existence of open field lines in dense coronal structures identified on the Sun's disk. This is the first observation of dense coronal structures on the disk, along which type Ⅲ emitting nonthermal electrons propagate. We find that this structure begins to form before the type Ⅲ emission. At the time of the type Ⅲ burst we estimate a density of 6-10 X 10~8 cm~(-3) for a temperature of ~5-6 MK at an altitude of 20,000 km.
机译:我们报告了由Yohkoh / SXT观察到的与动态X射线冠状射流相关的Ⅲ型爆发的检测。用Nancay(法国)多频放射线描记器观察到的Ⅲ型爆炸在空间和时间上与X射线射流重合。不同频率(236.6和164 MHz)的无线电位置沿射流的长度对齐。观察到与X射线射流有关的Ⅲ型爆炸,意味着电子加速到几十keV,同时伴随着产生软X射线的加热。这种联系意味着在太阳盘上识别出的密集日冕结构中存在开放磁场。这是磁盘上密集的冠状结构的第一个观察结果,发出非热电子的Ⅲ型沿其传播。我们发现这种结构在Ⅲ型发射之前就开始形成了。在Ⅲ型爆发时,我们估计在20,000 km的海拔高度下〜5-6 MK的密度为6-10 X 10〜8 cm〜(-3)。

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