Computer Science – Sound
Scientific paper
Apr 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977ap%26ss..47..401a&link_type=abstract
Astrophysics and Space Science, vol. 47, Apr. 1977, p. 401-413. Research supported by the Consiglio Nazionale delle Ricerche and
Computer Science
Sound
Galactic Nuclei, Gamma Rays, X Ray Astronomy, Balloon Sounding, Extraterrestrial Radiation, Pions, Point Sources, Radiant Flux Density
Scientific paper
Results are reported for analysis of data obtained during two balloon flights conducted to survey a region of the sky near the Galactic center with a spark-chamber gamma-ray telescope. Both 'coincidence events' and 'D events' (electron-positron par production) are considered, and arrival directions as well as energies are computed for each D event observed. Determination of the galactic-latitude distribution of D events indicates that a continuous line source is well-centered on the Galactic equator. Detected point sources include G-gamma 341 plus 1, GX 5-1, and Sco X-1. It is concluded that point sources might play a significant role in the gamma-ray emission attributed to the Galactic disk and that the pronounced enhancement in gamma-ray intensity on both sides of the Galactic center can be attributed to linelike emission associated with neutral-pion decays following cosmic-ray interactions with interstellar gas in the spiral arms.
Agrinier Bernard
Boella Giuliano
Forichon M.
Gerardi G.
Niel Michel
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