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Naked sunspotsNaked sunspots are spots seen in H-alpha to be devoid of associated plage. In magnetograms and K-line little if any opposite polarity field is found, and in soft X ray images a blank appears in the region of the spot. In almost all cases studied in which naked spots resulted the spot groups had emerged in unipolar regions of the same polarity as the naked spot. At least half of the naked spots are associated with coronal holes. The naked spots are long-lived and show rotation rates close to the Newton-Nunn curve. Most of the naked spots had bright rims in H-alpha, and the one spot observed to disappear left no trace in the background magnetic field. These spots may be a means by which separation of p from f magnetic polarity occurs.
Document ID
19830053058
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Liggett, M.
(Hale Observatories Pasadena, CA, United States)
Zirin, H.
(Big Bear Solar Observatory Pasadena, CA, United States)
Date Acquired
August 11, 2013
Publication Date
April 1, 1983
Publication Information
Publication: Solar Physics
Volume: 84
ISSN: 0038-0938
Subject Category
Solar Physics
Accession Number
83A34276
Funding Number(s)
CONTRACT_GRANT: AF-AFOSR-82-0018
CONTRACT_GRANT: NGL-05-002-034
CONTRACT_GRANT: NSF ATM-81-12698
Distribution Limits
Public
Copyright
Other

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