TY - JOUR
T1 - Inflating fat bubbles in clusters of galaxies by precessing massive slow jets
AU - Sternberg, Assaf
AU - Soker, Noam
N1 - Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2008/3
Y1 - 2008/3
N2 - We conduct hydrodynamical numerical simulations and find that precessing massive slow jets can inflate fat bubbles, that is, more- or less-spherical bubbles, that are attached to the centre of clusters of galaxies. To inflate a fat bubble, the jet should precess fast. The precessing angle θ should be large, or change over a large range 0 ≤ θ ≤ θmax ∼ 30°-70° (depending also on other parameters), where θ = 0° is the symmetry axis. The constraints on the velocity and mass-outflow rate are similar to those on wide jets to inflate fat bubbles. The velocity should be vj ∼ 104 km s-1, and the mass-loss rate of the two jets should be. These results, and our results from a previous paper dealing with slow wide jets, support the claim that a large fraction of the feedback heating in cooling flow clusters and in the processes of galaxy formation is done by slow massive jets.
AB - We conduct hydrodynamical numerical simulations and find that precessing massive slow jets can inflate fat bubbles, that is, more- or less-spherical bubbles, that are attached to the centre of clusters of galaxies. To inflate a fat bubble, the jet should precess fast. The precessing angle θ should be large, or change over a large range 0 ≤ θ ≤ θmax ∼ 30°-70° (depending also on other parameters), where θ = 0° is the symmetry axis. The constraints on the velocity and mass-outflow rate are similar to those on wide jets to inflate fat bubbles. The velocity should be vj ∼ 104 km s-1, and the mass-loss rate of the two jets should be. These results, and our results from a previous paper dealing with slow wide jets, support the claim that a large fraction of the feedback heating in cooling flow clusters and in the processes of galaxy formation is done by slow massive jets.
KW - Cooling flows
KW - Galaxies: jets
KW - Hydrodynamics
UR - http://www.scopus.com/inward/record.url?scp=40249118742&partnerID=8YFLogxK
U2 - 10.1111/j.1365-2966.2007.12802.x
DO - 10.1111/j.1365-2966.2007.12802.x
M3 - 文章
AN - SCOPUS:40249118742
VL - 384
SP - 1327
EP - 1336
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
SN - 0035-8711
IS - 4
ER -