Download or read book Broad H Alpha Profiles of Radio loud Active Galactic Nuclei and Rapid Profile Variability in Seyfert and Radio Galaxies written by Michael Eracleous and published by . This book was released on 1992 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 880 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Download or read book Active Galactic Nuclei written by John Edward Dyson and published by Manchester University Press. This book was released on 1985 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Radio Galaxies at TeV Energies written by Dorit Glawion and published by MDPI. This book was released on 2020-05-13 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is common believe that the centers of all galaxies exhibit supermassive black holes with masses ranging from millions up to billions of the mass of our Sun. By accreting surrounding matter, the luminosity of these galactic nuclei can outshine the emission of their host galaxies. If this is the case, they are called active galactic nuclei. Some of these objects eject powerful outflows composed of plasma, called jets. These jets can produce non-thermal radiation which observable across the entire electromagnetic spectrum from radio up to the gamma-ray frequencies. At highest frequencies (TeV range) most of the detected active galaxies have jets directed along or close to the line of sight. However, also galaxies with larger angles to the line of sight showing fascinating features were discovered, in seeming contradiction to traditional models for these so-called radio galaxies. Thus, the latter are of particular importance for understanding active galactic nuclei in general. This Special Issue contains reviews and research articles about the current knowledge of radio galaxies at TeV energies, including observational results and theoretical models. It is intended to guide the interested reader deeper into this fascinating discipline of modern day astronomy.

Download or read book The Central Engine of Active Galactic Nuclei written by Luis C. Ho and published by . This book was released on 2007 with total page 830 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Active Galactic Nuclei written by H. Richard Miller and published by Springer. This book was released on 2014-03-12 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume summarizes recent developments in our understanding of active galactic nuclei, including quasars, seyfert galaxies and radio galaxies. The predominant emphasis is put on observational results with information from essentially all wave bands, but important theoretical results are also presented. Among the contributions are discussions of the different types of active galaxies, the nature of the central engine, the wiggly structure of radio jets, the dynamics of the gas in jets, the study of millimeter and extreme ultraviolet regions, and a discussion of the observed continuum of the entire electromagnetic spectrum. The intended readers are professional astronomers and astrophysicists as well as graduate students in this field of research.

Download or read book The Nearest Active Galaxies written by J. E. Beckman and published by Editorial CSIC - CSIC Press. This book was released on 1993 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Multiwavelength Study of Seyfert Galaxies written by Veeresh Singh and published by . This book was released on 2011-11 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: "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."--Page [4] of cover.

Download or read book Advanced Lectures On The Starburst agn Connection written by Itziar Aretxaga and published by World Scientific. This book was released on 2001-04-24 with total page 387 pages. Available in PDF, EPUB and Kindle. Book excerpt: A group of leading experts in the field of starbursts and active galactic nuclei have joined hands to produce this review volume which covers the starburst-AGN connection, and the tests to be carried out with the upcoming new astronomical facilities to ascertain the relevance of both components to the formation and evolution of galaxies.The book is addressed to advanced graduate students and researchers in the fields of active galactic nuclei and young galaxies.

Download or read book Dissertation Abstracts International written by and published by . This book was released on 1993-07 with total page 754 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Reverberation Mapping of the Broad line Region in Active Galactic Nuclei written by Rutherford Appleton Laboratory. Workshop on Astronomy and Astrophysics and published by . This book was released on 1994 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book International Aerospace Abstracts written by and published by . This book was released on 1996 with total page 962 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Active Galactic Nuclei written by D.E. Osterbrock and published by Springer. This book was released on 1989-06-30 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt: IAU Symposium No. 134 on Active Galactic Nuclei was hosted by the Lick Observatory, as part of the celebration of its centennial, for the Observatory went into operation as part of the University of California on June 1, 1888. Twenty years later, in 1908, Lick Observatory graduate student Edward A. Fath recognized the unusual emission-line character of the spectrum of the nucleus of the spiral "nebula" NGC 1068, an object now well-known as one of the nearest and brightest Seyfert galaxies and active galactic nuclei. Ten years after that, and seventy years before this Symposium, Lick Observatory faculty member Heber D. Curtis published his description of the "curious straight ray" in M 87, "apparently connected with the nucleus by a thin line of matter," which we now recognize as an example of one of the jets which are the subject of so much current AGN research. The symposium was held at Kresge College on the campus of the University of California, Santa Cruz, only a short walk through the redwood groves to the Lick Observatory offices. A total of 232 astronomers and astrophysicists from 24 countries attended and took part in the Symposium. About 200 more had applied to come, but could not be accepted in order to keep the meeting at a reasonable size. Most of the participants lived in the Kresge College apartments immediately adjacent to the Kresge Town Hall in which the oral sessions took place.

Download or read book Radio Interferometric Investigations of Compact Components in Active Spiral and Seyfert Galaxy Nuclei written by John B. Carlson and published by . This book was released on 1977 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Of Radio loud and Radio quiet AGN Single Dish Radio Polarimetry and X ray Variability Study of Polar Scattered Seyfert I Galaxies written by Tobias Beuchert and published by . This book was released on 2013 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Big Bang Active Galactic Nuclei and Supernovae Paper written by S. Hayakawa and published by . This book was released on 1989 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book EMISSION LINE REGIONS IN ACTIVE GALACTIC NUCLEI STRUCTURE KINEMATICS PHYSICAL CONDITIONS AND CHEMICAL ABUNDANCES SEYFERT GALAXIES written by ANURADHA PURUSHOTTAM KORATKAR and published by . This book was released on 1990 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: a high confidence level. The rapid variability of the 3C 273 BLR suggests that there might be anisotropic continuum variability.