Huge Coronal Structure and Heating Constraints Determined from SERTS Observations

Details Huge Coronal Structure and Heating Constraints Determined from SERTS Observations Huge Coronal Structure and Heating Constraints Determined from SERTS Observations

Feb 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001apj...547.1109f&link_type=abstract

The Astrophysical Journal, Volume 547, Issue 2, pp. 1109-1115.

Astronomy and Astrophysics

Astronomy

2

Sun: Corona, Sun: Uv Radiation

Scientific paper

Intensities of the extreme-ultraviolet (EUV) spectral lines were measured as a function of radius off the solar limb by two flights of the Goddard's Solar Extreme-Ultraviolet Rocket Telescope and Spectrograph (SERTS) for three quiet-Sun regions. Density scale heights were determined for the different spectral lines. Limits on the filling factor were determined. In the one case where an upper limit was determined it was much less than unity. Coronal heating above 1.15 solar radii is required for all three regions studied. For reasonable filling factors, local heating is needed.

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