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Galactic distribution of interstellar Al-26A narrow cosmic gamma ray line at 1809 keV was discovered which was interpreted as resulting from the decay of approximately 3 M sub theta of Al-26 residing in the galactic disk. While its intrinsic width was unresolved by the HEAO 3 spectrometer, a (1 sigma) limit of 3 keV FWHM was obtained; this corresponds to bulk motions of v 250 km/s, which is consistent with material at rest in the ISM. Sites which have been suggested include type II supernovae and massive stars which are members of the extreme population I, as well as novae and red giants which are associated with an older disk population. The HEAO 3 data was used to distinguish between these two stellar populations.
Document ID
19850025689
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Mahoney, W. A. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Higdon, J. C. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Ling, J. C. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Wheaton, W. A. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Jacobson, A. S. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 12, 2013
Publication Date
August 1, 1985
Publication Information
Publication: 19th Intern. Cosmic Ray Conf - Vol. 1
Subject Category
Space Radiation
Report/Patent Number
OG-3.2-3
Accession Number
85N34002
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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IDRelationTitle19850025589Collected WorksNinteenth International Cosmic Ray Conference. OG Sessions, Volume 1
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