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Ephemeral active regionsObservations are shown to indicate that ephemeral regions are frequently generated both near large active centers and in extensive quiet areas of the sun. The latitude distribution of ephemeral regions appears to be much wider than that of sunspots and major active centers. Their frequency of occurrence does not appear to follow the sunspot cycle.
Document ID
19740035310
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Harvey, K. L.
Martin, S. F.
(Lockheed Solar Observatory Burbank, Calif., United States)
Date Acquired
August 7, 2013
Publication Date
October 1, 1973
Publication Information
Publication: Solar Physics
Volume: 32
Subject Category
Space Radiation
Report/Patent Number
AFCRL-TR-74-0368
AD-A000772
Report Number: AFCRL-TR-74-0368
Report Number: AD-A000772
Accession Number
74A18060
Funding Number(s)
CONTRACT_GRANT: NOAA-N-22-30-72(N)
CONTRACT_GRANT: F19628-73-C-0184
CONTRACT_GRANT: NASW-2160
Distribution Limits
Public
Copyright
Other

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