Flare-Associated Decimeter TypeIV Bursts at High Frequencies

Details Flare-Associated Decimeter TypeIV Bursts at High Frequencies Flare-Associated Decimeter TypeIV Bursts at High Frequencies

May 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agusmsh24a..06k&link_type=abstract

American Geophysical Union, Fall Meeting 2007, abstract #SH24A-06

Astronomy and Astrophysics

Astronomy

6954 Radio Astronomy, 7519 Flares, 7534 Radio Emissions

Scientific paper

Type IV radio bursts are broadband continuum events associated with solar flares that typically occur after the impulsive phase, can last for tens of minutes and are usually confined to low frequencies, below 200 MHz. However some flares show clear evidence for strong Type IV-like emission that is confined to high frequencies, around 1 GHz. Type IV events require nonthermal electrons and imply the presence of either long-lived energetic electrons trapped in coronal loops, or else ongoing acceleration lasting for tens of minutes following a flare. If, as is widely believed, the emission mechanism of Type IV bursts is plasma emission, then the high- frequency events require electrons at densities of over 3 109 cm-3, far higher densities than are involved in the low frequency Type IV bursts. We present a sample of such high frequency Type IV bursts and analyze their properties and association with other flare phenomena, and discuss their possible sources.

Affiliated with

Also associated with

No associations

Rating

Flare-Associated Decimeter TypeIV Bursts at High Frequencies does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Flare-Associated Decimeter TypeIV Bursts at High Frequencies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flare-Associated Decimeter TypeIV Bursts at High Frequencies will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1026495