Results 1 to 10 of about 2,647 (76)

Unitarity Bounds and the Cuspy Halo Problem [PDF]

Physical Review Letters, 2001
Physical Review ...
Lam Hui, Lam Hui
core   +6 more sources

Unstable Cold Dark Matter and the Cuspy Halo Problem in Dwarf Galaxies [PDF]

The Astrophysical Journal, 2003
5 pages, 1 figure, accepted for publication in ...
F. J. Snchez-Salcedo
openaire   +3 more sources

Does the Fornax dwarf spheroidal have a central cusp or core? [PDF]

, 2006
The dark matter dominated Fornax dwarf spheroidal has five globular clusters orbiting at ~1 kpc from its centre. In a cuspy CDM halo the globulars would sink to the centre from their current positions within a few Gyrs, presenting a puzzle as to why they
Ben Moore, Binney, Capuzzo-Dolcetta, Chandrasekhar, Coleman, Dalcanton, Diemand, Dinescu, Dubinski, El-Zant, Hernandez, Hernquist, Hernquist, Hogan, J. I. Read, Joachim Stadel, Kazantzidis, Kleyna, Lotz, Mackey, Marcel Zemp, Merritt, Moore, Moore, Moore, Navarro, Oh, Oh, Read, Stadel, Tobias Goerdt, Tremaine, Tremaine, Walker, Weinberg, White, Łokas   +36 more
core   +4 more sources

Enhanced tidal stripping of satellites in the galactic halo from dark matter self-interactions [PDF]

, 2016
We investigate the effects of self-interacting dark matter (SIDM) on the tidal stripping and evaporation of satellite galaxies in a Milky Way-like host.
Dooley, Gregory A., Frebel, Anna, Peter, Annika H. G., Vogelsberger, Mark, Zavala, Jesús   +4 more
core   +2 more sources

The dark halo of the Hydra I galaxy cluster: core, cusp, cosmological? Dynamics of NGC 3311 and its globular cluster system [PDF]

, 2011
NGC 3311 is the central cD galaxy of the Hydra I cluster. We use globular clusters around NGC 3311, combined with kinematical data of the galaxy itself, to investigate the dark matter distribution in the central region of Hydra I.
A. J. Romanowsky, Bullock, Burkert, Cappellari, Carter, Christlein, Côté, Diemand, Dirsch, Doherty, Fitchett, G. K. T. Hau, Gentile, Goerdt, Gonzalez, Grego, Hansen, Harris, Hayakawa, I. Misgeld, Ikebe, Kelson, Kormendy, Loubser, M. Hilker, M. Spolaor, Macciò, Mamon, McLaughlin, McNeil, Mieske, Mieske, Misgeld, Misgeld, Navarro, Newman, Newman, Paolillo, Peng, R. Salinas, Richtler, Romanowsky, Sand, Sand, Schlegel, Schuberth, Schuberth, Sánchez-Blázquez, T. Richtler, Tortora, Ventimiglia, Ventimiglia, Ventimiglia, Wehner, Y. Schuberth, Yamasaki, Łokas   +56 more
core   +3 more sources

The impact of dark matter cusps and cores on the satellite galaxy population around spiral galaxies [PDF]

, 2010
(Abridged) We use N-body simulations to study the effects that a divergent (i.e. "cuspy") dark matter (DM) profile introduces on the tidal evolution of dwarf spheroidal galaxies (dSphs). Our models assume cosmologically-motivated initial conditions where
Aaronson, Aaronson, Alan W. McConnachie, Andrew J. Benson, Arena, Belokurov, Belokurov, Benson, Benson, Benson, Bower, Bullock, Chandrasekhar, Cole, Cole, Collins, Colpi, Cooper, D'Onghia, De Blok, De Blok, Diemand, Diemand, Diemand, Eke, Eke, Evans, Fan, Fellhauer, Flores, Fukushige, Gao, Gao, Gao, Gerard Gilmore, Ghigna, Gilmore, Goerdt, Governato, Haiman, Hammer, Hashimoto, Hayashi, Johnston, Jorge Peñarrubia, Just, Kalirai, Kampakoglou, Kazantzidis, Kazantzidis, King, Klypin, Klypin, Koch, Koch, Koposov, Koposov, Kravtsov, Kravtsov, Kuhlen, Lahav, Lucio Mayer, Ludlow, Macciò, Mateo, Matthew G. Walker, Mayer, Mayer, Miyamoto, Mo, Moore, Moore, Navarro, Navarro, Navarro, Navarro, Navarro, Oh, Oh, Parkinson, Peñarrubia, Peñarrubia, Peñarrubia, Peñarrubia, Peñarrubia, Power, Prugniel, Read, Read, Ricotti, Salucci, Simon, Simon, Spergel, Springel, Springel, Stoehr, Stoehr, Strigari, Swaters, Tassis, Taylor, Tollerud, Trachternach, Van Den Bosch, Velázquez, Wahde, Walker, Walker, Wilkinson, Zentner, Zhao   +111 more
core   +4 more sources

Modified gravity models and the central cusp of dark matter haloes in galaxies [PDF]

, 2014
The N-body dark matter (DM) simulations point that DM density profiles, e.g. the Navarro Frenk White (NFW) halo, should be cuspy in its centre, but observations disfavour this kind of DM profile.
de Oliveira, Paulo L, Fabris, Júlio C, Gentile, Gianfranco, Rodrigues, Davi C   +3 more
core   +2 more sources

Deadly dark matter cusps vs faint and extended star clusters: Eridanus II and Andromeda XXV

, 2017
The recent detection of two faint and extended star clusters in the central regions of two Local Group dwarf galaxies, Eridanus II and Andromeda XXV, raises the question of whether clusters with such low densities can survive the tidal field of cold dark
Amorisco, Nicola C.
core   +1 more source

Halpha rotation curves: the soft core question

, 2002
We present high resolution Halpha rotation curves of 4 late-type dwarf galaxies and 2 low surface brightness galaxies (LSB) for which accurate HI rotation curves are available from the literature.
Andrea Zacchei, Claudio Firmani, Conconi P., Danilo Marchesini, de Blok W. J. G., de Blok W. J. G., Elena D’Onghia, Emilio Molinari, Guido Chincarini, Navarro J. F., Paolo Conconi, Richter O.-G., Wechsler R. H.   +12 more
core   +1 more source

The Cusp/Core problem: supernovae feedback versus the baryonic clumps and dynamical friction model

, 2016
In the present paper, we compare the predictions of two well known mechanisms considered able to solve the cusp/core problem (a. supernova feedback; b. baryonic clumps-DM interaction) by comparing their theoretical predictions to recent observations of ...
Del Popolo, A., Pace, F.
core   +1 more source