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Caraveo, P. A.

Publications and source records attributed to Caraveo, P. A..

23 records · Page 2
All sourcesNASA NTRSDOE OSTI
NASA NTRS1984

Gamma rays from atomic and molecular gas in the large complex of clouds in Orion and Monoceros

A comparison of COS-B gamma-ray observations of the large complex of interstellar clouds in Orion and Monoceros with the Columbia CO and Berkeley H I surveys of this region reveals a good correlation between gamma-ray emission and total gas distribution. The observed gamma-ray emission is explainable in terms of interactions of cosmic rays that are uniformly distributed in this region with the interstellar gas. The correlation is used as the basis of a calibration of the ratio between H2 column density and the integrated CO line intensity; the value of (2.6 + or - 1.2) X 10 to the 20th mol/sq cm K km s thereby obtained is consistent with the value derived from a similar analysis for the inner galaxy.

Bloemen, J. B. G. M.↗
NASA NTRS1982

On the variability of LSI+61 deg 303 (identical with GT 0236)

Out of six long and six short wavelength observations, one spectrum exhibits a significant photometric variation: or approximately 20%. Interpreting the continuum as due to superposition of an early B main sequence star plus a gaseous component contributing at lambda 2000 A, the wavelength dependence of the variation suggests that it derives from the latter component. The data indicate that if the observed variation is phase dependent, a minimum should occur between phases 0.8 and 0.2. However, since the variation is observed in only one spectrum, it may well be erratic.

Tanzi, E. G.↗
NASA NTRS1981

COS-B observations of gamma-ray emission from local galactic features

Evidence for large scale correlations between the high-energy photon sky and the known local distribution of diffuse interstellar matter is discussed. Evidence is presented of correlations with the Gould's Belt and the Dolidze Belt. The correlations indicate that the emission of gamma rays at medium latitudes can be explained by the distribution of interstellar matter, and the interaction of CR with interstellar matter can explain the mechanism of the gamma-ray emission by regarding the emissivity as a global average of the two systems since they contain most of the local dense cloud.

Bignami, G. F.↗