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Title:
Extreme nonthermal radiation from active galactic nuclei
Authors:
Cavaliere, A.; Morrison, P.
Affiliation:
AA(Roma, Universita, Rome; CNR, Laboratorio di Astrofisica Spaziale, Frascati, Italy), AB(MIT, Cambridge, Mass.)
Publication:
Astrophysical Journal, Part 2 - Letters to the Editor, vol. 238, June 1, 1980, p. L63-L66. Consiglio Nazionale delle Ricerche (ApJ Homepage)
Publication Date:
06/1980
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
ACTIVE GALACTIC NUCLEI, CONTINUOUS RADIATION, GALACTIC RADIATION, GAMMA RAY ASTRONOMY, NONTHERMAL RADIATION, X RAY SOURCES, ELECTRON ENERGY, ENERGY DISSIPATION, ENERGY TRANSFER, HIGH ENERGY ELECTRONS, INFRARED RADIATION, RELATIVISTIC PARTICLES, SPECTRAL ENERGY DISTRIBUTION
Comment:
A&AA ID. AAA027.158.324
DOI:
10.1086/183259
Bibliographic Code:
1980ApJ...238L..63C

Abstract

The physics of emission from the powerful continuum sources within active galactic nuclei can be characterized by the parameter L/R, a measure of compactness. For values of L/R exceeding some 10 to the 30th ergs/s cm energy losses by relativistic electrons are so rapid that they must come into general balance with simultaneous processes of energy gain. This tendency toward energy balance allows a largely model-independent discussion of the emissions over the whole range from infrared to gamma rays. Assumed smooth radial variations of coherent electromagnetic fields then lead to natural fits of power and spectral parameters conforming to the observed patterns.

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