Noise Storms and the Structure of Microwave Emission of Solar Active Regions

Details Noise Storms and the Structure of Microwave Emission of Solar Active Regions Noise Storms and the Structure of Microwave Emission of Solar Active Regions

Aug 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995soph..160..133b&link_type=abstract

Solar Physics, Volume 160, Issue 1, pp.133-149

Physics

8

Scientific paper

Solar radio and microwave sources were observed with the Very Large Array (VLA) and the RATAN-600, providing high spatial resolution at 91 cm (VLA) and detailed spectral and polarization data at microwave wavelengths (1.7 to 20 cm - RATAN). The radio observations have been compared with images from the Soft X-ray Telescope (SXT) aboard theYohkoh satellite and with full-disk phoptospheric magnetic field data from the Kislovodsk Station of the Pulkovo Observatory. The VLA observations at 91 cm show fluctuating nonthermal noise storm sources in the middle corona. The active regions that were responsible for the noise storms generally had weaker microwave emission, fainter thermal soft X-ray emission, as well as less intense coronal magnetic fields than those associated with other active regions on the solar disk. The noise storms did, however, originate in active regions whose magnetic fields and radiation properties were evolving on timescales of days or less. We interpret these noise storms in terms of accelerated particles trapped in radiation belts above or near active regions, forming a decimetric coronal halo. The particles trapped in the radiation belts may be the source of other forms of nonthermal radio emission, while also providing a reservoir from which energetic particles may drain down into lower-lying magnetic structures.

Affiliated with

Also associated with

No associations

Rating

Noise Storms and the Structure of Microwave Emission of Solar Active Regions 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 Noise Storms and the Structure of Microwave Emission of Solar Active Regions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Noise Storms and the Structure of Microwave Emission of Solar Active Regions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1568071