Abstract
view Abstract Citations (17) References (42) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Impulsive Microwave Burst and Solar Noise Storm Emission Resolved with the VLA Willson, Robert F. ; Lang, Kenneth R. ; Liggett, Margaret Abstract The evolution of a microwave burst at 20.7 cm wavelength and a type I noise storm at 91.6 cm wavelength are examined using VLA. The magnetic loops in the two spectral regions are studied. The sizes and brightness temperatures of the 20.7 cm burst sources are compared with those predicted by multithermal and nonthermal models of microwave burst emission of Dulk and Dennis (1982). The data reveal that: (1) the precursor, impulsive, and post-impulsive phases of the 20.7 cm burst are located in spatially separated sources; (2) the gradual enhancement of a 91.6 cm noise storm continuum source suggests a feed-back mechanism exists between activity in higher and lower lying loops; and (3) the derived magnetic field strengths at 20.7 cm for the nonthermal models are 35-160 G with core field strengths of 125-220 G. Publication: The Astrophysical Journal Pub Date: February 1990 DOI: 10.1086/168437 Bibcode: 1990ApJ...350..856W Keywords: Microwaves; Noise Storms; Solar Radiation; Solar Radio Bursts; Brightness Temperature; Photosphere; Solar Corona; Solar Magnetic Field; Sunspots; Very Large Array (Vla); Solar Physics; INTERFEROMETRY; POLARIZATION; SUN: CORONA; SUN: RADIO RADIATION full text sources ADS |
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