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Can I read Unified Models for Active Galactic Nuclei and Quasars on EtoBox?
Unified Models for Active Galactic Nuclei and Quasars by Robert Antonucci is a Physics and Astronomy article available to read on EtoBox.
What is Unified Models for Active Galactic Nuclei and Quasars about?
radio galaxies, Seyfert galaxies, BL Lac objects, blazars, OVV quasars 1. INTRODUCTION Because the critical central regions of Active Galactic Nuclei (AGN) and quasars are strongly nonspherical but spatially unresolved, orientation effects have been the source of much confusion. In fact, it now appears that much of the variety in AGN types is just the result of varying orien tation relative to the line of sight. We can define an extreme hypothesis, the straw person model (SPM), in which there are two basic types of AGN: the radio quiets and the radio louds. For each type there is a range in intrinsic luminosity, and the luminosity controls some properties such as the Fanaroff and Riley classes. However, at a given intrinsic luminosity, all other properties such as spectroscopic classifi cation and VLBI component speeds are ascribed to orientation. This model is only a caricature of the unification idea, and is already ruled out on many grounds, but it will be useful for organizing the discussion. I'll describe what I consider to be convincing evidence that orientation effects are important and widespread. The true situation may be in some sense half way between the SPM and the hypo
Who reads Unified Models for Active Galactic Nuclei and Quasars?
It is typically read by researchers, students, and practitioners in Physics and Astronomy.
- Author
- Robert Antonucci
- Publisher
- Annual Reviews
- Published
- 1993
- Language
- EN
- Field
- Physics and Astronomy (Physical Sciences)