Accession Number : ADA145009


Title :   Studies of Solar Flares and Coronal Loops.


Descriptive Note : Final scientific rept. 1 Feb 82-31 May 84,


Corporate Author : CALIFORNIA UNIV SAN DIEGO LA JOLLA CENTER FOR ASTROPHYSICS AND SPACE SCIENCES


Personal Author(s) : Canfield,R C


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a145009.pdf


Report Date : 10 Jul 1984


Pagination or Media Count : 241


Abstract : The objectives of this research were to improve our understanding of solar flares and solar flares and solar coronal loops. The specific approach to the flare objective was to analyze and interpret solar flare data, using theoretical methods developed as part of the research. The specific approach to the coronal loop objective was to investigate their thermal and magnetohydrodynamic stability for various physical models. The principal result of the flare research was to demonstrate that, in two well-observed flares, the mechanism of chromospheric evaporation accounts for the observed amount of flare X-ray plasma. The dominant energy transport mechanism is thermal conduction. Heating by energetic electrons is of secondary importance. The principal results of the magnetohydrodynamic stability analyses were demonstrations of the role of radiative energy loss, compressibility, magnetic field line twist, foot-point magnetic field line tying, and radial plasma pressure gradient.


Descriptors :   *SOLAR CORONA , *SOLAR FLARES , *CHROMOSPHERE , PRESSURE GRADIENTS , MAGNETIC FIELDS , STABILITY , MODELS , PLASMAS(PHYSICS) , RADIATIVE TRANSFER , THERMAL STABILITY , ENERGY TRANSFER , ELECTRONS , HEATING , THERMAL CONDUCTIVITY , EVAPORATION , LOOPS , SOLAR X RAYS , TWIST(MOTION) , MAGNETOHYDRODYNAMICS


Subject Categories : Astrophysics
      Plasma Physics and Magnetohydrodynamics


Distribution Statement : APPROVED FOR PUBLIC RELEASE