Volume 32 Issue 1
Jan.  2012
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SUN Weiying, WU Ji, WANG Chuanbing, WANG Shui. Gyrosynchrotron Radiation of Interplanetary CMEs[J]. Journal of Space Science, 2012, 32(1): 1-7. doi: 10.11728/cjss2012.01.001
Citation: SUN Weiying, WU Ji, WANG Chuanbing, WANG Shui. Gyrosynchrotron Radiation of Interplanetary CMEs[J]. Journal of Space Science, 2012, 32(1): 1-7. doi: 10.11728/cjss2012.01.001

Gyrosynchrotron Radiation of Interplanetary CMEs

doi: 10.11728/cjss2012.01.001
  • Received Date: 2010-09-17
  • Rev Recd Date: 2011-11-10
  • Publish Date: 2012-01-15
  • CMEs (Coronal Mass Ejections) are an important means of energy release in the solar corona. Solar Polar Orbit Radio Telescope (SPORT) is a mission being proposed for observing the propagation of interplanetary CMEs from solar polar orbit. The main payload onboard SPORT is a synthetic aperture interferometric radiometer, which receives radio emission of interplanetary CMEs. It is identified that there are mainly three radio emission mechanisms of CMEs, i.e., bremsstrahlung, gyrosynchrotron emission and plasma emission. Among these emission types, bremsstrahlung emission is the main emission mechanism of the high-density plasma clouds of interplanetary CMEs. Gyrosynchrotron emission is the continuous emission generated by high-energy electrons from CMEs, while plasma emission is the main mechanism of transient radio bursts from CMEs. In this paper, the gyrosynchrotron emission of interplanetary CMEs is focused on. Firstly, the mechanism of gyrosynchrotron emission is reviewed. Secondly, a review of the physical parameter models of background solar wind and interplanetary CMEs is presented. After these, the brightness temperature and polarization of gyrosynchrotron emission of interplanetary CMEs are calculated and analyzed. Finally, the detectability of gyrosynchrotron emission of interplanetary CMEs by radio meters is discussed briefly.

     

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