Open AccessBubbles as tracers of heat input to cooling flows
Author(s) -
Binney J.,
Bibi F. Alouani,
Omma H.
Publication year - 2007
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.1365-2966.2007.11575.x
Subject(s) - physics , bubble , mechanics , energy (signal processing) , volume (thermodynamics) , thermodynamics , astrophysics , quantum mechanics
We examine the distribution of injected energy in three‐dimensional, adaptive‐grid simulations of the heating of cooling flows. We show that less than 10 per cent of the injected energy goes into bubbles. Consequently, the energy input from the nucleus is underestimated by a factor of order 6 when it is taken to be given by PV γ/(γ− 1) , where P and V are the pressure and volume of the bubble, and γ is the ratio of principal specific heats.