Astronomical School’s Report, 2011, Volume 7, Issue 1, Pages 60–62

https://doi.org/10.18372/2411-6602.07.1060
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UDC 523.987

Comparison of magnetic fields in an active prominence measured in D3 HeІ and Hα lines

Lozitsky V.G., Botygina O.A.

Astronomical Observatory, Kyiv Shevchenko National University, Ukraine

Abstract

The I±V Stokes profiles in 12 July 2004 and 24 July 1999 active prominences are analyzed. Measurements of the magnetic fields by the method of “centers of gravity” shown, that magnetic field in prominence was in range from –200 to +580 G (different for various heights of prominence). Weak, narrow, splitted and polarized features were found in D3 HeІ line core for height of 6 Mm, which indicate on subtelescopic (<1 Mm) magnetic field of 3300 G. An interesting effect was found for heights of 2–10 Mm for both prominences – anticorrelation of measured magnetic strengths in helium and hydrogen lines.

Keywords: magnetic fields in prominences

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