Multiwavelength Study Of Seyfert Galaxies: Testing The Predictions Of Unification Scheme

Singh, Veeresh; Singh, Veeresh

ISBN 10: 3846531731 / ISBN 13: 9783846531730

Editore: Lap Lambert Academic Publishing, 2011

288 pages. 8.66x5.91x0.65 inches. In Stock. Codice articolo 3846531731

Riassunto:

Seyfert galaxies are a subclass of active galaxies and are categorized as nearby, low luminosity, radio-quiet Active Galactic Nuclei (AGN) hosted in spiral or lenticular galaxies. Seyfert galaxies are classified mainly into two subclasses named as `type 1' and `type 2' based on the presence and absence of broad permitted emission lines in their optical spectra, respectively. Seyfert unification scheme hypothesizes that Seyfert type 1s and type 2s belong to the same parent population and appear different solely due to the differing orientations of the obscuring material having a torus-like geometry around the AGN. The primary objective of this work is to examine the validity and limitations of the orientation and obscuration based Seyfert unification scheme using multiwavelength (mainly X-ray and radio) observations. It has been emphasized that the key issue in testing the Seyfert unification scheme is acquiring a well defined Seyfert sample. The statistical comparisons of X-ray, radio and IR properties of the two Seyfert subtypes have been discussed in the framework of the unification scheme.

L'autore: Dr. Veeresh Singh obtained Ph.D. in Physics from Indian Institute of Astrophysics, Bangalore. His research interests cover phenomenological study of Active Galactic Nuclei, unification models of AGNs, star formation and AGN activity in galaxies. He is the author of several research articles published in reputed journals.

Dati bibliografici

Titolo: Multiwavelength Study Of Seyfert Galaxies: ...
Casa editrice: Lap Lambert Academic Publishing
Data di pubblicazione: 2011
Legatura: Paperback
Condizione: Brand New