Altitude-dependent emission of type III solar radio bursts

作者：Wu CS^*; Wang CB; Zhou GC; Wang S; Yoon PH

来源：Astrophysical Journal, 2005, 621(2): 1129-1136.

DOI：10.1086/427681

• Sun : particle emission
• Sun : radio radiation

The present discussion complements a preceding article in which a cyclotron-maser theory of type III solar radio bursts is proposed. One important issue, which has not been addressed in any of the existing theories, is that in the event of a F-H pair emission dynamic spectra usually show an initial time delay of the fundamental (F) component after the harmonic (H) component has commenced. Moreover, the ratio of the starting frequencies of the H waves to those of the F waves is generally higher than 2. A plausible interpretation is that the emission of H waves starts at an altitude lower than that for F waves. This notion leads to the present study. Although it is formulated within the context of the cyclotron-maser scenario, the model of the source electrons is different from that discussed previously.

• 出版日期2005-3-10
• 单位中国科学院国家空间科学中心; 中国科学技术大学