The analysis and interpretation of solar X-ray photographs

Details The analysis and interpretation of solar X-ray photographs The analysis and interpretation of solar X-ray photographs

Aug 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977soph...53..417u&link_type=abstract

Solar Physics, vol. 53, Aug. 1977, p. 417-433.

Astronomy and Astrophysics

Astronomy

13

Astronomical Photography, Plasma Temperature, Solar Corona, Solar X-Rays, X Ray Astronomy, Apollo Telescope Mount, Microdensitometers, Optical Filters, Plasma Density, Skylab Program, Stellar Models, X Ray Telescopes

Scientific paper

The paper examines methods of analyzing and interpreting solar X-ray photographs obtained by soft X-ray telescopes such as those used during the Skylab mission, to obtain information on the physical conditions that give rise to coronal X-ray emitting features revealed by inspection or microdensitometry of the X-ray photographs. First, the differential emission measure function is defined. By choosing models for this function and calculating the integral for the irradiance at the film for each filter, one calculates the effective temperature and emission measure. This method gives correct results only when applied to isothermal regions. For heterothermal regions, a modeling approach which predicts the run of temperature and density, and thus the form of the differential measure function, is used.

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