Accession Number:

ADA179584

Title:

Very Large Array Observations of the Sun With Related Observations Using the SMM Satellite.

Descriptive Note:

Interim rept. 1 Jan-31 Dec 86,

Corporate Author:

TUFTS UNIV MEDFORD MA DEPT OF PHYSICS AND ASTRONOMY

Personal Author(s):

Report Date:

1986-01-31

Pagination or Media Count:

81.0

Abstract:

Observations of solar active regions with the Very Large Array VLA and with the Solar Maximum Mission SMM satellite are providing new insights to the origin and prediction of solar activity. This activity includes bursts or flares that can disrupt the tracking of satellites, distort communication systems, and interfere with high-flying aircraft. These bursts originate in coronal loops that are uniquely studied with the VLA at 20 cm wavelength and with the SMM at X-ray wavelengths. The research summarized includes discussions of coronal diagnostics, solar burst precursors, and energy build-up in coronal loops. We also discuss novel discoveries of coherent burst mechanisms on nearby active stars other than the sun. VLA observations of a solar noise storm at 92-cm wavelength have resolved the sources of storm radiation for the first time. Future VLA observations with the new 92-cm system will provide new information about the unknown processes that trigger and continually excite solar noise storms, while also providing insights to the unknown triggering mechanisms for decimetric bursts and coronal mass ejections. This report includes reprints, preprints or abstracts of articles prepared under this grant, Keywords Solar radio radiation, Solar X rays Preburst heating Magnetic triggering of solar bursts Compact variable sources Coronal diagnostics Solar noise storms High-resolution microwave observations.

Subject Categories:

  • Astrophysics
  • Unmanned Spacecraft

Distribution Statement:

APPROVED FOR PUBLIC RELEASE