E-Print Archive

There are 3783 abstracts currently viewable.


Search:

Advanced Search
Options
Main Page Add New E-Print Submitter
Information
Feedback
News Help/FAQ About Preferences
Manage Key Phrase
Notification
The Progress of Solar Cycle 24 at High Latitudes  

Richard C. Altrock   Submitted: 2010-02-18 16:15

The ''extended'' solar cycle 24 began in 1999 near 70 degrees latitude, similarly to cycle 23 in 1989 and cycle 22 in 1979. The extended cycle is manifested by persistent Fe XIV coronal emission appearing near 70 degrees latitude and slowly migrating towards the equator, merging with the latitudes of sunspots and active regions (the ''butterfly diagram'') after several years. Cycle 24 began its migration at a rate 40% slower than the previous two solar cycles, thus indicating the possibility of a peculiar cycle. However, the onset of the ''Rush to the Poles'' of polar crown prominences and their associated coronal emission, which has been a precursor to solar maximum in recent cycles (cf. Altrock 2003), has just been identified in the northern hemisphere. Peculiarly, this ''Rush'' is leisurely, at only 50% of the rate in the previous two cycles. The properties of the current ''Rush to the Poles'' yields an estimate of 2013 or 2014 for solar maximum.

Authors: Altrock, Richard C.
Projects:

Publication Status: in Astronomical Society of the Pacific Conference Series Vol. 428, SOHO-23: Understanding a Peculiar Solar Minimum, 23rd SOHO Workshop, Northeast Harbor, Maine, 21-25 Sep., 2009. Steven Cranmer, J. Todd Hoeksema, and John Kohl, eds. (Astronomical Society of the Pacific), 147-152, 2010
Last Modified: 2010-09-23 12:15
Go to main E-Print page  Edit Entry  Download Preprint  Submitter's Homepage Delete Entry 


Key
Go to main E-Print pageGo to main E-Print page.
Download PreprintDownload Preprint.
Submitter's HomepageSubmitters Homepage.
Edit EntryEdit Entry.
Delete AbstractDelete abstract.

Abstracts by Author
The Progress of Solar Cycle 24 at High Latitudes

Related Pages
MSU Solar Physics.
Max Millennium Science Mail Archive.
Max Millennium Message of the Day Mail Archive.
Max Millennium Flare Catalog

Archive Maintainer
Alisdair Davey



© 2003 Solar Physics Group - Montana State University