Coronal temperature profiles from the August 11, 1999 solar eclipse

Details Coronal temperature profiles from the August 11, 1999 solar eclipse Coronal temperature profiles from the August 11, 1999 solar eclipse

Feb 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001orion..59a...4w&link_type=abstract

Orion (ISSN 0030-557X), 59. Jahrgang, No. 302, p. 4 - 9 (2001)

Physics

Coronal Temperature Profiles, Solar Eclipse 1999 August 11

Scientific paper

From a measurement campaign in Szombathely, Hungary during the solar eclipse of August 11, 1999 photographs were obtained. By digitizing these images, radial white light intensity profiles of the Sun's corona are plotted for a "shell" of the corona, where this shell's distance from the Sun is determined by the exposure time of the image. Fitting this intensity profile with the luminosity function of Badalyan and Livshits (1986), and assuming all the white light comes from the Sun's light scattered off the coronal electrons, the temperature can roughly be determined for this shell of the corona. With longer exposures of the Sun's corona, coronal layers for larger distances from the Sun can be examined. By plotting the temperature derived in a coronal layer for four different layers a temperature profile of the corona can be derived from about 0.25 to 2.50 solar radii.

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