A search for the reported 400-keV gamma-ray line from Crab Nebula

Details A search for the reported 400-keV gamma-ray line from Crab Nebula A search for the reported 400-keV gamma-ray line from Crab Nebula

Nov 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977natur.270...36l&link_type=abstract

Nature, vol. 270, Nov. 3, 1977, p. 36, 37.

Astronomy and Astrophysics

Astronomy

12

Astronomical Spectroscopy, Balloon-Borne Instruments, Crab Nebula, Gamma Ray Astronomy, Line Spectra, Germanium Diodes, Lithium, Radiation Measuring Instruments, Solar Radiation

Scientific paper

A balloon-borne large volume high resolution gamma-ray spectrometer which utilizes 40 cu cm Ge(Li) crystals was used June 10, 1974 to search for a 400-keV gamma-ray line from the Crab Nebula. Energy loss spectra in the 400-keV vicinity are compared with gamma-ray measurements of the same source which were reported by Leventhal et al. (1977). In contrast with the 1976 experimental results reported by Leventhal et al., a 400-keV line was not observed. Further, it is thought that the 1974 data contradict the measurement reported by Leventhal et al. if a constant source intensity is assumed.

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