TheReuven Ramaty High Energy Solar Spectroscopic ImagerObservation of the 1809 keV Line from Galactic26Al
- 18 April 2003
- journal article
- research article
- Published by American Astronomical Society in The Astrophysical Journal
- Vol. 589 (1) , L55-L58
- https://doi.org/10.1086/375795
Abstract
Observations of the central radian of the Galaxy by the Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI) have yielded a high-resolution measurement of the 1809 keV line from 26Al, detected at 11 σ significance in 9 months of data. The RHESSI result for the width of the cosmic line is 2.03 keV FWHM. The best-fit line width of 5.4 keV FWHM reported by Naya et al. using the Gamma-Ray Imaging Spectrometer balloon instrument is rejected with high confidence.Keywords
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