EGRET observations of 3 C 273

Details EGRET observations of 3 C 273 EGRET observations of 3 C 273

Oct 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992egre.symp.....v&link_type=abstract

In Max-Planck-Inst. für Physik und Astrophysik, EGRET Mission and Data Analysis 3 p (SEE N94-19462 04-89)

Astronomy and Astrophysics

Astrophysics

Gamma Ray Observatory, Quasars, Spectrum Analysis, Compton Effect, Gamma Ray Telescopes, Radiation Spectra, Satellite Imagery, Satellite Observation

Scientific paper

The quasar 3C 273 was detected by the Compton Observatory Satellite (COS-B) in the 1970's. Energetic Gamma Ray Experiment Telescope (EGRET) observations of this sky region in Jun. and Oct. 1991 revealed a flux from 3C 273 lower than that measured by COS-B. The flux observed by EGRET in the June period is approximately 0.0000003/sq cm-2 sec-1 for energies greater than 100 MeV. During the Oct. observation it appears to be even lower. For the first observation a preliminary spectrum was derived which was a photon index of 2.4.

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