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The Prolate Solar ChromosphereWe present a comparative analysis of the chromospheric solar limb prolateness, using strictly simultaneous H-alpha, ground-based observations and HeII space-based observations. The typical prolateness is found to be DeltaD/D = 5.5 x 10(exp -3) in HeII and 1.2 x 10(exp -3) in H-alpha. The first measurements in the 30.4 nm HeII line over a period of two years. as well as coronal data, are discussed to explore further the origin of the prolateness and its possible consequences.
Document ID
19990070955
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Auchere, F. (Paris Univ. Orsay, France)
Boulade, S. (Institut d'Astrophysique Paris, France)
Koutchmy, S. (Institut d'Astrophysique Paris, France)
Smartt, R. N. (National Solar Observatory Sunspot, NM United States)
Delaboudiniere, J. P. (Paris Univ. Orsay, France)
Georgakilas, A. (National Observatory of Athens Greece)
Gurman, J. B. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Artzner, G. E. (Paris Univ. Orsay, France)
Date Acquired
August 19, 2013
Publication Date
October 1, 1998
Publication Information
Publication: Astronomy and Astrophysics
Subject Category
Solar Physics
Report/Patent Number
NOAO-Preprint-817
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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