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New Calibration Parameter for Observations of Transverse Solar Magnetic Fields in the Fe I 5324.19 Å Line

Published online by Cambridge University Press:  12 April 2016

Weihong Song  and
Guoxiang Ai
Weihong Song
Affiliation:
Physics Department, Yunnan Normal University, Kunming 650092, People’s Republic ofChina
Guoxiang Ai
Affiliation:
Beijing Astronomical Observatory, Chinese Academy of Sciences, Beijing 100080, People’s Republic of China

Abstract

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Adopting the computational model of papers I and II (Song et al. 1990, 1992) we have found that for a better fit of the center of the Fe I 5324.19 Å line, the effect of turbulent Doppler broadening has to be taken into account. Through theoretical and numerical analysis we conclude that the square root of the modulus of Stokes Q and U is an appropiate observational parameter to represent the transverse magnetic field, since it is approximately linearly proportional to the strength of the transverse magnetic field for suitable positions of the filter passband.

Type
Session 3. Techniques of Magnetic Field Measurements
Information
International Astronomical Union Colloquium , Volume 141: The Magnetic and Velocity Fields of Solar Active Regions , 1993 , pp. 196 - 198
Copyright
Copyright © Astronomical Society of the Pacific 1993

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