Results 1 to 10 of about 2,600 (69)

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

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

Constraints on the radial mass distribution of dark matter halos from rotation curves [PDF]

, 2001
Stars have mass; halos lack cusps.Comment: Invited review for "The Shapes of Galaxies and Their ...
McGaugh, Stacy
core   +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

Dark matter cores and cusps in spiral galaxies and their explanations [PDF]

, 2019
We compare proposed solutions to the core vs cusp issue of spiral galaxies, which has also been framed as a diversity problem, and demonstrate that the cuspiness of dark matter halos is correlated with the stellar surface brightness.
Kaplinghat, M, Ren, T, Yu, HB
core   +2 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

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

An extensive study of dynamical friction in dwarf galaxies: the role of stars, dark matter, halo profiles and MOND

, 2006
We investigate the in-spiraling timescales of globular clusters in dwarf spheroidal (dSph) and dwarf elliptical (dE) galaxies, due to dynamical friction. We address the problem of these timescales having been variously estimated in the literature as much
Begeman, Bekenstein, Binney, Binney, Binney, Blais-Ouellette, Bottema, Brada, Buonanno, Ciotti, Coleman, Colpi, De Blok, De Blok, Dubath, F. J. Sánchez-Salcedo, Fall, Fuchs, Gentile, Gentile, Goerdt, Gunn, Hashimoto, Hayashi, Held, Hernandez, Hernandez, Hodge, Hubble, Jin, Jorge Reyes-Iturbide, Just, Kazantzidis, King, Kleyna, Kleyna, Kleyna, Kregel, Lacey, Lake, Lotz, Mackey, Magorrian, Mateo, Mayer, McGaugh, Milgrom, Milgrom, Navarro, Navarro, Oh, Pointecouteau, Pryor, Read, Read, Sanders, Sanders, Spekkens, Stoehr, Sánchez-Salcedo, Sánchez-Salcedo, Sánchez-Salcedo, Taffoni, The, Tremaine, Van Den Bosch, Walcher, Walker, Walker, Wang, White, X. Hernandez, Łokas, Łokas, Łokas, Łokas   +75 more
core   +1 more source