Open AccessBehaviour of matter close to the event horizon
Author(s) -
Das Tapas K.
Publication year - 2004
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1111/j.1365-2966.2004.07528.x
Subject(s) - physics , event horizon , astrophysics , hawking radiation , supermassive black hole , accretion (finance) , black hole (networking) , transonic , sonic black hole , advection , intermediate mass black hole , high energy astronomy , binary black hole , stellar black hole , event (particle physics) , astronomy , micro black hole , spin flip , galaxy , gravitational wave , mechanics , quantum mechanics , computer network , routing protocol , routing (electronic design automation) , cosmic ray , computer science , aerodynamics , link state routing protocol
Investigation of the behaviour of accreting matter close to the black hole event horizon is of fundamental importance in relativistic and high‐energy astrophysics because it provides the key features of the diagnostic spectra of stellar‐mass and supermassive black holes. In this paper, we examine the terminal behaviour of general relativistic matter in multi‐transonic, advective black hole accretion discs. We compute, for the first time we believe, the values of various dynamical and thermodynamic multi‐transonic flow variables extremely close (≤ 0.01 r g ) to the event horizon, and study the dependence of these variables on fundamental accretion parameters. Our calculation is useful for a better understanding of Hawking radiation from acoustic black holes.