Gert Gislher Lichti

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The Compton Gamma-Ray Observatory (CGRO) experiments EGRET and COMPTEL observed the Virgo sky region continuously for 7 weeks between December 10, 1996 and January 28, 1997. The prominent quasar 3C 273 was found to be the brightest source in γ-rays and was significantly detected by EGRET and COMPTEL. The EGRET experiment observed a time-variable flux at(More)
On 1993 January 31 at 18:57:11 UT, COMPTEL detected high energy (0.7-30 MeV) emission from the intense cosmic gamma-ray burst GRB 930131. Upon rapid notification of this burst by the BATSE experiment on CGRO, COMPTEL's gamma-ray imaging capability was utilized to locate the source of emission to within ~2 degrees sooner than seven hours after the start of(More)
The COMPTEL observations of the blazar-type quasar PKS 0528+134 in the energy range 0.75 MeV to 30 MeV carried out between April 1991 and September 1994 have been analyzed. During the first two years (CGRO Phases I and II), PKS 0528+134 was most significantly detected at energies above 3 MeV. During the last year (CGRO Phase III), there is only evidence for(More)
During the Compton Gamma-Ray Observatory (CGRO) observations made in Phase I, II, III, and IV/Cycle 4 in the years 1991 to 1995, the region on the sky including the radio galaxy Centaurus A was in the wide field-of-view of COMPTEL in 15 pointings of various durations. The analysis of the COMPTEL data obtained during these 15 pointings shows emission(More)
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