2006/10/02 by Brian Punsly
Physics and Astronomy · #Accretion (finance) #Accretion disc #Active galactic nucleus #Astronomy #Astrophysical Phenomena and Observations #Astrophysics #Astrophysics and Star Formation Studies #Context (archaeology) #Galaxies: Formation, Evolution, Phenomena #Galaxy #History #Kinetic energy #Physics #Quantum mechanics #Quasar #astro-ph
paper · pdf · doi:10.1111/j.1745-3933.2006.00254.x
published as Mon.Not.Roy.Astron.Soc.Lett. 374 (2007) L10-L14 · To appear in MNRAS Letters
arxiv created 2006/10/02 · openalex publication_date 2006/10/31 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Abstract The existence of Fanaroff–Riley class II objects that are kinetically dominated, the jet kinetic luminosity, Q, is larger than the total thermal luminosity (infrared to X-ray) of the accretion flow, Lbol, is of profound theoretical interest. Such objects are not expected in most theoretical models of the central engine of radio-loud active galactic nuclei. Thus, establishing such a class of objects is an important diagnostic for filtering through the myriad of theoretical possibilities. This Letter attempts to establish a class of quasars that have existed in a state of kinetic dominance, R(t) ≡Q(t)/Lbol(t) > 1, at some epoch, t. It is argued that the 10 quasars in this article with a long-term time-average , that exceeds LEdd are likely to have satisfied the condition R(t) > 1 either presently or in the past based on the rarity of Lbol > LEdd quasars. Finally, the existence of these sources is discussed in the context of the theory of the central engine.