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2009MNRAS.394..491M - Mon. Not. R. Astron. Soc., 394, 491-500 (2009/March-3)
Frying doughnuts: what can the reprocessing of X-rays to IR tell us about the AGN environment?
McKERNAN B., FORD K.E.S., CHANG N. and REYNOLDS C.S.
Abstract (from CDS):
We studied the ratio of observed mid-IR and 2-10keV X-ray luminosities in a heterogeneous sample of 245 AGN from the literature. We found that when we removed AGN with prominent jets, ∼90 per cent of type I AGN lay within a very tight dispersion in luminosity ratio (1 < RIR/X < 30). This implies that the AGN central engine is extremely uniform and models of the physical AGN environment (e.g. cloud cover, turbulent disc, opening angle of absorbing structures such as dusty tori) must span a very narrow range of parameters. We also found that the far-IR (100µm) to mid-IR (12µm) observed luminosity ratio is an effective discriminator between heavily obscured AGN and relatively unobscured AGN.
Abstract Copyright: © 2009 The Authors. Journal compilation © 2009 RAS
Journal keyword(s): galaxies: active - galaxies: individual - galaxies: Seyfert - techniques: spectroscopic
Simbad objects: 11
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