The features of CME-associated microwave bursts

Details The features of CME-associated microwave bursts The features of CME-associated microwave bursts

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005acasn..46..416s&link_type=abstract

Acta Astronomica Sinica, vol. 46, no. 4, p. 416-425

Astronomy and Astrophysics

Astronomy

Sun: Radio Radiation, Sun: Coronal Mass Ejections, Sun: Solar Microwave Bursts

Scientific paper

The relationship of solar microwave bursts (SMBs) associated with CMEs is analyzed. The features of SMBs are regarded including, we included lasting time, maximum flux, burst type, and spectral index. We choose 136 events, which are from November 1999 to September 2003 and include 60 partial halo / full halo CMEs and 76 narrow / normal CMEs. We find that: 1) The lasting times of SMBs associated with normal / narrow CMEs are usually short, but they cover a larger range when associated with partial halo / full halo CMEs. 2) The lasting times of SMBs associated with slow CMEs are usually short, but they cover a lager range when associated with fast CMEs. 3) The maximum fluxes of SMBs associated with normal / narrow CMEs or slow CMEs are small, but they cover a lager range when associated with partial halo/full halo CMEs or fast CMEs. 4) Most of SMBs associated with normal/narrow CMEs are S type, while most of them are C/GB type when associated with full halo CMEs. 5) The spectra of most of the CME-associated events are flat at higher frequencies. The statistical results show that an intrinsically physical relationship exists between CME/flare and SMB. SMB may provide some information on early life of CME/flare.

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