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An Observational Test for Solar Atmospheric Heating

  • L. van Driel-Gesztelyi (a1), P. Démoulin (a1), J. Ireland (a2), B. Thompson (a2), A. Fludra (a3), K. Oláh (a4), Zs. Kővári (a4), L. K. Harra (a5), C. H. Mandrini (a1), K. Bocchialini (a6) and S. Orlando (a7)...

Abstract

We study the evolution of the emissivity correlated with magnetic flux density of an active region from its birth until its decay throughout all atmospheric layers. We analyse multi-wavelength data obtained from SOHO, Yohkoh, GOES, SOLSTICE and 10.7 cm radio data from DRAO, Canada. We utilise our results to understand the scaling laws in different atmospheric layers. We confirm that the relationship between the emitted excess flux (flux - basal flux) and photospheric magnetic flux density ΔF(< f B >) follow power laws, and the powers depend on the formation temperature of the line(s) involved.

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Copyright

References

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Golub, L., Noci, G., Poletto, G., Vaiana, G.S.: 1982, ApJ, 259, 359.
Harvey, K.L. & White, O.R., 1999, ApJ, 515, 812.
Schrijver, C.J., 1991, in Mechanisms of Chromospheric and Coronal Heating, eds. Ulmschneider, P., Priest, E.R., Rosner, R., Springer Verlag, p. 257.
Schrijver, C.J., Zwaan, C., Maxson, C.W. & Noyes, R.W., 1985, A&A, 149, 123.

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