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Role of the background regimes towards the Solar Mean Magnetic Field (SMMF)

Published online by Cambridge University Press:  27 November 2018

Souvik Bose Open the ORCID record for Souvik Bose [Opens in a new window]  and
K. Nagaraju
Souvik Bose
Affiliation:
Institute of Theoretical Astrophysics, University of Oslo, P.O. Box 1029 Blindern, N-0315 Oslo, Norway Rosseland Centre for Solar Physics, University of Oslo, P.O. Box 1029 Blindern, N-0315 Oslo, Norway email: souvik.bose@astro.uio.no
K. Nagaraju
Affiliation:
Indian Institute of Astrophysics, Koramangala-2nd Block, Bangalore-560034
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Abstract

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The Solar Mean Magnetic Field (SMMF) is generally defined as the disc-averaged line-of-sight (LOS) magnetic field on the sun. The role of the active regions and the large-scale magnetic field structures (also called the background) has been debated over the past few decades to understand whether the origin of the SMMF is either due to the active regions or the background. We, in this paper have investigated contribution of sunspots, plages, networks and the background towards the variability of the SMMF using the datasets from the SDO-AIA & HMI, and found that 89% of the SMMF is due to the background whereas the remaining 11% originates from the active regions and the networks.

Keywords

Sun:mean magnetic fieldSun:Origin of MMFSun-as-a-starSun:photosphere
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 13 , Symposium S340: Long-term Datasets for the Understanding of Solar and Stellar Magnetic Cycles , February 2018 , pp. 85 - 86
Copyright
Copyright © International Astronomical Union 2018 

References

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