Heating Constraints on the Solar Corona Determined from SERTS Observations

Details Heating Constraints on the Solar Corona Determined from SERTS Observations Heating Constraints on the Solar Corona Determined from SERTS Observations

Dec 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aas...183.5905f&link_type=abstract

American Astronomical Society, 183rd AAS Meeting, #59.05; Bulletin of the American Astronomical Society, Vol. 25, p.1386

Astronomy and Astrophysics

Astronomy

Scientific paper

EUV emission above the quiet solar limb up to 1.2Rsun was studied using observations made from two different flights of the Goddard Solar EUV Rocket Telescope and Spectrograph (SERTS) covering three different spatial locations. The spectral line intensities from a number of EUV spectral lines as a function of height were analyzed. Ratio of iron line intensities from Fe XIII, Fe XIV, Fe XV and Fe XVI were used to determine the electron temperature. The emission measure was determined from the iron line intensities and the electron temperature. Since in all three cases the line ratio temperature increased with height, a source of heating is required at some location above the maximum observed height, which was 1.15Rsun for two locations and 1.2Rsun for the third location. The maximum divergence of heat flux was determined from the variation of temperature versus radius. The total radiatiative power was obtained from the emission measure and temperature. By comparing the divergence of heat flux and the total radiatiative power, heating was also shown to be necessary for two of the three cases throughout the region below 1.15Rsun. (*) ARC

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