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Detailed characteristics of the high-energy gamma radiation from PSR 0833-45 measured by COS-B.
Bignami, G. F.; Hermsen, W.; Masnou, J. L. +11 more
A series of COS-B observations of the high-energy gamma-ray emission from PSR 0833-45 has been combined to derive detailed temporal and spectral characteristics of this source. The gamma-ray period of the pulsar was determined for the observations spanning the time interval October 1975 to June 1977. The variation of the period with time can be ex…
COS-B observations of high-energy gamma-ray emission from the Orion cloud complex.
Caraveo, P. A.; Bignami, G. F.; Strong, A. W. +11 more
Emission of high-energy gamma rays (between 70 and 5000 MeV) has been observed from the direction of the Orion cloud complex by the COS-B satellite. The emission is resolved and the existence of structure is apparent within the excess with two maxima coinciding with L 1630 and L 1641, i.e. the northern and the southern major clouds in the complex.…
34.1 day periodicity in CYG X-3
Molteni, D.; Robba, N. R.; Scarsi, L. +1 more
COS-B observations of a 34.1-day periodicity in the X-ray intensity of the X-ray source Cyg X-3 are discussed. Collimated proportional counter observations of the source were made in the 2-12 keV energy range for a total of approximately 100 days in three intervals of approximately one month each; data from two of these intervals allow the monitor…
Characteristics of the Cen X-3 neutron star from correlated spin-up and X-ray tics luminosity measurements .
van der Klis, M.; Robba, N. R.; Bonnet-Bidaud, J. M.
Results are presented of one month of observations with the ESA COS-B satellite of the X-ray pulsation period of Cen X-3, together with X-ray luminosity measurements during this same time.
The data are shown to be compatible with an unbraked spin-up by accretion from a Keplerian disk onto a neutron star with f = 4µ2/730<…The number-intensity relation for galactic gamma-ray sources and the emission from the galactic disk
Caraveo, P.; Rothenflug, R.
The paper evaluates the contribution of unresolved gamma-ray sources to overall emission of the Galaxy starting from the data on the resolved ones listed in the 1st COS-B catalogue, covering up to 50 percent of the galactic plane. It is shown that the integral Log N (greater than S)-Log S graph of an homogeneous subject of 9 of the 13 COS-B source…