Multi-year BATSE earth occultation monitoring of NGC4151

Details Multi-year BATSE earth occultation monitoring of NGC4151 Multi-year BATSE earth occultation monitoring of NGC4151

May 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aipc..410.1283p&link_type=abstract

The fourth compton symposium. AIP Conference Proceedings, Volume 410, pp. 1283-1287 (1997).

Computer Science

Active And Peculiar Galaxies And Related Systems, Starburst Galaxies And Infrared Excess Galaxies, Magnitudes And Colors, Luminosities, Gamma-Ray, X-Ray

Scientific paper

Because the Earth occultation technique allows BATSE to be used as an all-sky monitor, BATSE is uniquely able to provide continuous observations of NGC4151 over the entire lifetime of the Compton GRO mission. Continuous 2154 day light-curves for the Seyfert galaxy NGC4151 have been derived from Earth occultation analysis of CGRO BATSE data. Light-curves for the 20-70 keV and 70-200 keV bands are shown and found to have an average flux of 11×10-3 photons cm-2 s-1 and 2.3×10-3 photons cm-2 s-1 respectively. Evidence for intrinsic source variability is observed in both 20-70 keV and 70-200 keV bands with a fractional variation ratio measured at Fvar=0.2.

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