2017/05/29 by L. Foschini, Luigi Foschini, Foschini, Luigi · 1 citation
Computer Science · Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Astrophysics of Galaxies (astro-ph.GA) #Computational Physics and Python Applications #FOS: Physical sciences #High Energy Astrophysical Phenomena (astro-ph.HE) #Radio Astronomy Observations and Technology #astro-ph.GA #astro-ph.HE
paper · pdf · doi:10.48550/arxiv.1705.10166
21 pages, 4 figures. Proceedings of the Conference "Quasars at All Cosmic Epochs" (Padova, Italy, April 2-7, 2017). Submitted to Frontiers in Astronomy and Space Science (Special Issue)
arxiv created 2017/05/29 · openalex publication_date 2017/05/29 · arxiv updated 2017/05/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
After the discovery of powerful relativistic jets from Narrow-Line Seyfert 1 Galaxies, and the understanding of their similarity with those of blazars, a problem of terminology was born. The word blazar is today associated to BL Lac Objects and Flat-Spectrum Radio Quasars, which are somehow different from Narrow-Line Seyfert 1 Galaxies. Using the same word for all the three classes of AGN could drive either toward some misunderstanding, or to the oversight of some important characteristics. I review the main characteristics of these sources, and finally I propose a new scheme of classification.