1-8 Å Coronal Background X-Ray Emission and the Associated Indicators of Photospheric Magnetic Activity

Details 1-8 Å Coronal Background X-Ray Emission and the Associated Indicators of Photospheric Magnetic Activity 1-8 Å Coronal Background X-Ray Emission and the Associated Indicators of Photospheric Magnetic Activity

Oct 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008apj...686l..41r&link_type=abstract

The Astrophysical Journal, Volume 686, Issue 1, pp. L41-L44.

Astronomy and Astrophysics

Astronomy

1

Sun: Corona, Sun: X-Rays, Gamma Rays, Sun: Sunspots

Scientific paper

Consistent correlations between X-ray background flux (XBF) and sunspot area over three solar cycles suggest a strong relationship between the flux emergence at the locations of strong field regions, sunspots, and the coronal heating processes that ultimately result in coronal X-ray emission. We find that the pattern of variation of sunspot numbers shows noticeable deviations from the pattern depicted by the sunspot areas when compared to XBF. A weight factor, such as Wi, assigned to individual spot groups in R=k(Wigi+n) may provide better estimation of the true strength of solar cycles.

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