148 citations · 445 across the 12 of their papers we have counts for
7 papers · 1 filter
The role of Compton heating in cluster cooling flows
L. Ciotti, J. P. Ostriker, S. Pellegrini
Recent observations by Chandra and XMM-Newton demonstrate that the central gas in "cooling flow" galaxy clusters has a mass cooling rate that decreases rapidly with decreasing temp…
Free-free absorption effects on Eddington luminosity
L. Ciotti, J. P. Ostriker
In standard treatments the Eddington luminosity is calculated by assuming that the electron-photon cross section is well described by the Thomson cross section which is gray (frequ…
Self-consistent stellar dynamical tori
L. Ciotti, G. Bertin, P. Londrillo
We present preliminary results on a new family of distribution functions that are able to generate axisymmetric, truncated (i.e., finite size) stellar dynamical models characterize…
The scaling relations of galaxy clusters and their dark matter halos
B. Lanzoni, L. Ciotti, A. Cappi +2
Like early-type galaxies, also nearby galaxy clusters define a Fundamental Plane, a luminosity-radius, and a luminosity-velocity dispersion relations, whose physical origin is stil…
Galactic cannibalism in the galaxy cluster C0337-2522 at z=0.59
C. Nipoti, M. Stiavelli, L. Ciotti +2
According to the galactic cannibalism model, cD galaxies are formed in the center of galaxy clusters by merging of massive galaxies and accretion of smaller stellar systems: howeve…
Reasoning From Fossils: Learning From the Local Black Hole Population About the Evolution of Quasars
Zoltan Haiman, Luca Ciotti, Jeremiah P. Ostriker
We discuss a simple model for the growth of supermassive black holes (BHs) at the center of spheroidal stellar systems. In particular, we assess the hypotheses that (1) star format…