311 citations · 1.8k across the 22 of their papers we have counts for
6 papers · 2 filters
Models for jet power in elliptical galaxies: A case for rapidly spinning black holes
Rodrigo S. Nemmen, Richard G. Bower, Arif Babul +1
The power of jets from black holes are expected to depend on both the spin of the black hole and the structure of the accretion disk in the region of the last stable orbit. We inve…
Velocity Distributions from Nonextensive Thermodynamics
Eric I. Barnes, Liliya L. R. Williams, Arif Babul +1
There is no accepted mechanism that explains the equilibrium structures that form in collisionless cosmological N-body simulations. Recent work has identified nonextensive thermody…
Investigating the Andromeda Stream: III. A Young Shell System in M31
M. A. Fardal, P. Guhathakurta, A. Babul +1
Published maps of red giant stars in the halo region of M31 exhibit a giant stellar stream to the south of this galaxy, as well as a giant "shelf" to the northeast of M31's center.…
The impact of mergers on relaxed X-ray clusters - I. Dynamical evolution and emergent transient structures
Gregory B. Poole, Mark A. Fardal, Arif Babul +3
We report on the analysis of a suite of SPH simulations (incorporating cooling and star formation) of mergers involving idealised X-ray clusters whose initial conditions resemble r…
On the formation of extended galactic disks by tidally disrupted dwarf galaxies
Jorge Penarrubia, Alan McConnachie, Arif Babul
We explore the possibility that extended disks, such as that recently discovered in M31, are the result of a single dwarf (10^9--10^10 Msun) satellite merger. We carry out N-body s…
Suppressing cluster cooling flows by self-regulated heating from spatially distributed population of AGNs
Adi Nusser, Joseph Silk, Arif Babul
(Abridged) Existing models invoking AGN activty to resolve the cooling flow conundrum in galaxy clusters focus exclusively on the role of the central galaxy. Such models require fi…