Magnetic structure of a flaring region producing impulsive microwave and hard X-ray bursts.
Abstract
Using VLA observations of the 1B/M1 flare of June 25, 1980, 6-cm 'snapshot' maps are synthesized. The spatial and temporal resolutions during the 9 minutes of the impulsive phase were, respectively, 1 arcsec x 2 arcsec and 10 s. Some displacement is noted between the locations of the burst source and the preflare loop structures seen in the preflare map. The burst peak occurred on the neutral line of the preflare polarization map, between the two oppositely polarized microwave 'loop' structures approximately 40 arcsec long. Concurrent hard X-ray observations were made of the burst, although these had no spatial resolution. The 6-cm maps show the locations of a number of the X-ray burst spikes. The 6-cm burst was fully resolved into at least eight components, many of which were bipolar.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- February 1982
- DOI:
- 10.1086/159694
- Bibcode:
- 1982ApJ...253..963K
- Keywords:
-
- Magnetic Signatures;
- Microwave Emission;
- Solar Flares;
- Solar Radio Bursts;
- Solar X-Rays;
- Coronal Loops;
- Footprints;
- H Alpha Line;
- Radio Interferometers;
- Solar Atmosphere;
- Solar Flux;
- Solar Magnetic Field;
- Solar Physics;
- Magnetic Fields:Solar Flares;
- Solar Flares:VLA Maps;
- Solar Flares:X Rays