Occurrence of Solar Radio Burst Fine Structures in 1–7.6 GHz Range Associated with CME Events

Abstract

Abstract. The solar radio bursts and accompanying fine structures recorded by spectrometers at Huairou, Beijing during 1999-2003 are presented. The spectrometers are with high temporal (5-10 ms) and spectral (4-20 MHz) resolutions. We found 91 radio burst events that occurred within half hour of the onset of the CME events which cause solar energetic particle events. The associations of radio fine structures with CME events are discussed.

Experimental SDR receiver for monitoring and processing of solar radio bursts

“…The current frequency resolution is not a limiting parameter because the most narrowband artifacts of solar bursts in band 1-2 GHz are dm spikes, which have about 20 MHz bandwidth [5].…”

Radio fine structures in dm–cm wavelength range associated with magnetic reconnection processes

“…The occurrence of solar radio burst FSs in 1-7.6 GHz range associated with CME events was statistically studied in 91 radio bursts recorded during 1997-2003 at the Huairou Station of the National Astronomical Observatories of China (Huairou/NAOC) (Yan et al, 2005). These events were all associated with GOES X-ray flares.…”

“…Frequency in $ 10 2 MHz to < 10 GHz corresponds to source density of a few 10 8 -10 11 cm À3 , which includes the density range where primary energy release of flares should take place (Bastian et al, 1998;Benz, 2004;Gary and Keller, 2004). Temporal fine structures (FS) of solar radio emission in solar flares have been found in various wavebands for several decades (Allaart et al, 1990;Guedel and Benz, 1990;Bruggmann et al, 1990;Benz et al, 1992;Sawant et al, 1994;Isliker and Benz, 1994;Jiricka et al, 2001;Ma et al, 2003;Meszarosova et al, 2003;Fu et al, 2004b;Meszarosova et al, 2005;Yan et al, 2005;Magdalenic et al, 2006).…”