Other
Scientific paper
Aug 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976apj...207l.151m&link_type=abstract
Astrophysical Journal, vol. 207, Aug. 1, 1976, pt. 2, p. L151-L154.
Other
12
Balloon-Borne Instruments, Crab Nebula, Gamma Rays, Spaceborne Telescopes, X Ray Sources, Astronomical Coordinates, High Resolution, Milky Way Galaxy, Spark Chambers
Scientific paper
A balloon-borne spark-chamber telescope, having a threshold energy of 70 MeV and a projected full angular error of 1.2 deg at 300 MeV, was flown on three occasions between October 1972 and July 1973. Results from these flights, including observations of the Cygnus region, the Crab Nebula, and part of Hercules, are presented. An excess flux was observed from the galactic plane in the region of Cygnus, giving a line flux of about 0.000047 photon/sq cm/s/r. Positive fluxes were observed from the Crab Nebula and Cygnus X-4. Upper limits are quoted for other possible sources in the Cygnus region.
McKechnie S. P.
Mount K. E.
Ramsden David
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