Results 31 to 40 of about 2,647 (76)

Chandrasekhar's Dynamical Friction and non-extensive statistics

, 2016
The motion of a point like object of mass $M$ passing through the background potential of massive collisionless particles ($m
de Souza, R. E., Del Popolo, A., Delliou, Morgan Le, Lee, Xi-Guo, Lima, J. A. S., Silva, J. M.   +5 more
core   +1 more source

Is there Evidence for Flat Cores in the Halos of Dwarf Galaxies?: The Case of NGC 3109 and NGC 6822

, 2005
Two well studied dwarf galaxies -- NGC 3109 and NGC 6822 -- present some of the strongest observational support for a flat core at the center of galactic dark matter (DM) halos. We use detailed cosmologically motivated numerical models to investigate the
Anatoly Klypin, Athanassoula E., Begeman K. G., de Blok W. J. G., Fabio Governato, George Rhee, Gottesman S. T., Gregory Stinson, Israel F. P., James Wadsley, Kahabka P., Klypin A., Octavio Valenzuela, Rowan-Robinson M., Schoenmakers R. H. M., Staveley-Smith L., Thomas Quinn   +16 more
core   +1 more source

Structure and Subhalo Population of Halos in a Self-Interacting Dark Matter Cosmology

, 2002
We study the structure of Milky Way (MW)- and cluster-sized halos in a Lambda Cold Dark Matter (CDM) cosmology with self-interacting (SI) dark particles.
Claudio Firmani, Corsini E. M., de Blok W. J. G., Lynden-Bell D., Octavio Valenzuela, Pedro Colin, Vladimir Avila‐Reese   +6 more
core   +3 more sources

The role of dark matter in the galaxy mass-size relationship

, 2011
The observed relationship between stellar mass and effective radius for early type galaxies, pointed out by many authors, is interpreted in the context of Clausius' virial maximum theory.
Bernardi, Bernardi, Bertin, Bindoni, Binney, Binney, Brosche, Brosche, Burstein, Caimmi, Caimmi, Cappellari, Carollo, Chandrasekhar, Chiosi, D. Bindoni, Djorgovski, D’Onofrio, E. Contini, Faber, Jorgensen, King, Kormendy, L. Secco, Mamon, Marmo, Napolitano, Navarro, Nigoche-Netro, Pahre, Prugniel, Prugniel, R. Caimmi, Saglia, Secco, Secco, Shen, Spergel, Spergel, Tantalo, Tortora, von Hoerner, Zhao   +42 more
core   +1 more source

Effects of Baryon Mass Loss on Profiles of Large Galactic Dark Matter Haloes

, 2012
We perform controlled numerical experiments to asses the effect of baryon mass loss on the inner structure of large galactic dark matter haloes. This mass expulsion is intended to mimic both the supernovae and AGN feedbacks, as well as the evolution of ...
Abadi, Benson, Benson, Blumenthal, Brammer, Bryan, Buote, Cano-Diaz, Cattaneo, Cattaneo, Cinthia Ragone-Figueroa, Ciotti, de Blok, de Souza, Dubinski, Duffy, Fabian, Fontanot, Gian Luigi Granato, Gnedin, Gnedin, Governato, Granato, Granato, Helly, Hernquist, Inoue, Johansson, Kazantzidis, Klypin, Komatsu, Lapi, Macciò, Mario G. Abadi, Martizzi, Mashchenko, Mashchenko, Memola, Monaco, Moster, Navarro, Navarro, Newman, Ogiya, Pasetto, Peirani, Pipino, Pontzen, Pooley, Ragone-Figueroa, Read, Richtler, Salucci, Sijacki, Silk, Somerville, Springel, Tonini, Treu, Viola, Zhao, Zitrin   +61 more
core   +1 more source

Investigating the long-term evolution of galaxies: Noise,cuspy halos and bars [PDF]

, 2001
I review the arguments for the importance of halo structure in driving galaxy evolution and coupling a galaxy to its environment. We begin with a general discussion of the key dynamics and examples of structure dominated by modes.
Weinberg, Martin D.
core   +2 more sources

Dark matter halo mass functions and density profiles from mass and energy cascade. [PDF]

Sci Rep, 2023
Xu ZJ.
europepmc   +1 more source

Applying Schwarzschild's orbit superposition method to barred or non-barred disc galaxies

, 2015
We present an implementation of the Schwarzschild orbit superposition method which can be used for constructing self-consistent equilibrium models of barred or non-barred disc galaxies, or of elliptical galaxies with figure rotation.
Athanassoula, E., Vasiliev, Eugene
core   +3 more sources

Condensation of Galactic Cold Dark Matter

, 2016
We consider the steady-state regime describing the density profile of a dark matter halo, if dark matter is treated as a Bose-Einstein condensate. We first solve the fluid equation for "canonical" cold dark matter, obtaining a class of density profiles ...
Visinelli, Luca
core   +1 more source

Universal scaling laws and density slopes for dark matter haloes. [PDF]

Sci Rep, 2023
Xu Z.
europepmc   +1 more source