| 太阳射电辐射的自调制模型 |
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| 引用本文： | 黄光力,毛定一.太阳射电辐射的自调制模型[J].天文学报,1997,38(4):379-385. |
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| 作者姓名： | 黄光力 毛定一 |
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| 作者单位： | 中国科学院紫金山天文台!南京，210008，中国科学院紫金山天文台!南京，210008，河海大学数理系!南京，210024 |
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| 摘 要： | 本文采用几何光学近似，研究在日冕条件下，沿着磁场传播的电磁波产生非线性自调制不稳定性的可能．发现只有分米波和米波段的射电爆发，可以在日冕外层产生纵向和横向的自调制不稳定性．而在其它波段，如光学、X射线和高频电磁波，则不会产生这样的非线性不稳定性过程．由纵向自调制不稳定性产生的精细结构具有包络孤波的形状．
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| 关 键 词： | 太阳射电 非线性过程 波的调制 |
A SELF-MODULATION MODEL OF SOLAR RADIO EMISSION |
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| Wang De-yu, Huang Guang-li.A SELF-MODULATION MODEL OF SOLAR RADIO EMISSION[J].Acta Astronomica Sinica,1997,38(4):379-385. |
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| Authors: | Wang De-yu Huang Guang-li |
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| Abstract: | The existing theorehcal model of self-modulation instability in the nonlinear wavespropagation is adopted in thes work. We want to investigate the possibility ofself-modulation instablities occurring in the electromagnetic waves propagating in thesolar corona. It is found that only decimeter and meter radio bursts can produce thelongitudinal and transverse self-modulation instabilities in the outer corona and that theoptical, X-ray and high frequency electromagnetic waves are unable to produce suchmodulation processes. This theoretical model is consistent with the observed finestructures of solar meter wave bursts. |
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| Keywords: | solar radio emission nonlinear process wave modulation |
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