Magnetic Evolution of Mini-Coronal Mass Ejections

The present study investigates the relationship between mini-coronal mass ejections (mini-CMEs) and the evolution of their magnetic fluxes. An automatic detection algorithm was used to detect mini-dimmings in 171 Å images taken with the Atmospheric Imaging Assembly (AIA) onboard the Solar Dynamics O...

Full description

Saved in:
Bibliographic Details
Published in:Solar physics 2016-03, Vol.291 (3), p.941-952
Main Authors: Honarbakhsh, L., Alipour, N., Safari, H.
Format: Article
Language:English
Subjects:
Algorithms
Astrophysics and Astroparticles
Atmospheric Sciences
Atmospherics
Corona
Ejection
Evolution
Fluxes
Magnetic fields
Magnetic structure
Photosphere
Physics
Physics and Astronomy
Solar observatories
Solar physics
Space Exploration and Astronautics
Space Sciences (including Extraterrestrial Physics
Studies
Sun
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The present study investigates the relationship between mini-coronal mass ejections (mini-CMEs) and the evolution of their magnetic fluxes. An automatic detection algorithm was used to detect mini-dimmings in 171 Å images taken with the Atmospheric Imaging Assembly (AIA) onboard the Solar Dynamics Observatory (SDO). Using the difference images for the dimmings, 131 events that satisfied mini-CME signatures were selected. Changes in their magnetic structure using photospheric line-of-sight magnetograms taken with the Heliospheric and Magnetic Imager (HMI) on SDO were investigated. It was found that 27 % of the events had slight changes and 73 % showed considerable changes in magnetic flux. About 18 % of the magnetic structures evolved by cancellation and 38 % by complex flux changes.
ISSN:0038-0938
1573-093X
DOI:10.1007/s11207-016-0858-5