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  Concurrent effect of Alfvén waves and planar magnetic structure on geomagnetic storms

Shaikh, Z. I., Raghav, A., Vichare, G., Bhaskar, A., Mishra, W., & Choraghe, K. (2019). Concurrent effect of Alfvén waves and planar magnetic structure on geomagnetic storms. Monthly Notices of the Royal Astronomical Society, 490(3), 3440-3447. doi:10.1093/mnras/stz2806.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0005-DB2D-3 Version Permalink: https://hdl.handle.net/21.11116/0000-0005-DB2E-2
Genre: Journal Article

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 Creators:
Shaikh, Zubair I, Author
Raghav, Anil, Author
Vichare, Geeta, Author
Bhaskar, Ankush, Author
Mishra , Wageesh1, Author
Choraghe, Komal, Author
Affiliations:
1Max Planck Institute for Solar System Research, Max Planck Society, Justus-von-Liebig-Weg 3, 37077 Göttingen, DE, ou_1125546              

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 Abstract: Generally, interplanetary coronal mass ejection (ICME) triggers intense and strong geomagnetic storms. It has been established that the ICME sheath-moulded planar magnetic structure enhances the amplitude of the storms. Alfvén waves embedded in ICME magnetic clouds or high solar streams including corotating interacting regions (CIRs) in turn extend the recovery phase of the storm. Here, we investigate a geomagnetic storm with a very complex temporal profile with multiple decreasing and recovery phases. We examine the role of planar magnetic structure (PMS) and Alfvén waves in the various phases of the storm. We find that fast decrease and fast recovery phases are evident during transit of PMS regions, whereas a slight decrease or recovery is found during the transit of regions embedded with Alfvénic fluctuations.

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Language(s): eng - English
 Dates: 2019
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1093/mnras/stz2806
 Degree: -

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Title: Monthly Notices of the Royal Astronomical Society
  Other : Mon. Not. R. Astron. Soc.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Oxford : Oxford University Press
Pages: - Volume / Issue: 490 (3) Sequence Number: - Start / End Page: 3440 - 3447 Identifier: ISSN: 1365-8711
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000024150