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The diffuse extreme-ultraviolet background - Constraints on hot coronal plasmaThe Apollo-Soyuz data and data reported by Cash et al. (1976) have been reanalyzed in terms of both isothermal models and temperature distribution models. In the latter case, a power-law form is assumed for the relation between emission measure and temperature. A new upper limit on diffuse flux in the 20-73 eV band derived from Apollo-Soyuz observations made in the earth's shadow has been incorporated in the calculation. In the considered investigation the results of the new analysis are presented and the implications for the physical properties of the hot component of the interstellar medium are discussed. The analysis of the Berkeley extreme ultraviolet (EUV) diffuse background measurements using either isothermal or power law temperature distribution models for the emitting plasma indicates excellent qualitative agreement with hard X-ray data that suggest the sun to be immersed in a hot plasma that pervades most of space out to approximately 100 pc.
Document ID
19810059432
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Paresce, F.
(California, University Berkeley, CA, United States)
Stern, R.
(California Institute of Technology, Jet Propulsion Laboratory, Pasadena CA, United States)
Date Acquired
August 11, 2013
Publication Date
July 1, 1981
Publication Information
Publication: Astrophysical Journal
Subject Category
Space Radiation
Accession Number
81A43836
Funding Number(s)
CONTRACT_GRANT: NAS9-13799
CONTRACT_GRANT: NAS7-100
CONTRACT_GRANT: NSG-5131
CONTRACT_GRANT: NAS8-33012
Distribution Limits
Public
Copyright
Other

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