NDLI: Spectral evolution of active galactic nuclei penrose compton scattering processes and gamma ray emission from seyfert galaxies

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Spectral evolution of active galactic nuclei penrose compton scattering processes and gamma ray emission from seyfert galaxies

Content Provider	NASA Technical Reports Server (NTRS)
Author	Boldt, Elihu Leiter, Darryl
Copyright Year	1990
Description	In black hole spectral evolution models for active galactic nuclei (AGN), present epoch Seyfert galaxies evolve from an earlier precursor active galaxy (PAG) stage at redshift z is approximately 7 where they acted as the thermal sources responsible for the residual cosmic x ray background (RCXB). The Seyfert galaxies which emerge in this context emit Penrose Compton Scattering (PCS) gamma ray transients on the order of hours with a kinematic cutoff in the spectrum less than or equal to 3 MeV. The EGRET (Energetic Gamma-Ray Experimental Telescope/ OSSE (Oriented Scintillation Spectrometer Experiment/ COMPTEL (Compton Telescope)/ BATSE (Burst and Transient Source Experiment) instruments on the Gamma Ray Observatory (GRO) are appropriate instruments to carry out further tests of this model by studying: PCS gamma ray transient emission from individual galaxies and, the possibility that present epoch PCS gamma ray emitting Seyfert galaxies contribute observable temporal variability to the excess diffuse gamma ray background component less than or equal to 3 MeV.
File Size	541797
Page Count	12
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19900014001
Archival Resource Key	ark:/13960/t82k1bh8k
Language	English
Publisher Date	1990-05-01
Access Restriction	Open
Subject Keyword	Space Radiation Red Shift Electron Scattering Gamma Ray Observatory Galactic Radiation Gamma Rays Seyfert Galaxies Active Galactic Nuclei X Rays Gamma Ray Telescopes Scintillation Counters Spectrometers Kinematics Compton Effect Background Radiation Black Holes Astronomy Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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