An analytical approach to the dwarf galaxies cusp problem
| Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
|---|---|
| Data(s) |
18/04/2012
18/04/2012
2010
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| Resumo |
Aims. An analytical solution for the discrepancy between observed core-like profiles and predicted cusp profiles in dark matter halos is studied. Methods. We calculate the distribution function for Navarro-Frenk-White halos and extract energy from the distribution, taking into account the effects of baryonic physics processes. Results. We show with a simple argument that we can reproduce the evolution of a cusp to a flat density profile by a decrease of the initial potential energy. Brazilian agency FAPESP[2009/05176-4] Brazilian agency CNPq[200297/2010-4] Brazilian agency CAPES[1313-10-0] World Premier International Research Center Initiative (WPI Initiative), MEXT, Japan |
| Identificador |
ASTRONOMY & ASTROPHYSICS, v.524, 2010 0004-6361 http://producao.usp.br/handle/BDPI/15716 10.1051/0004-6361/201015330 |
| Idioma(s) |
eng |
| Publicador |
EDP SCIENCES S A |
| Relação |
Astronomy & Astrophysics |
| Direitos |
closedAccess Copyright EDP SCIENCES S A |
| Palavras-Chave | #Galaxy: formation #galaxies: dwarf #large scale structure of Universe #DARK-MATTER CORES #GALACTIC HALOS #ROTATION CURVES #MASS-LOSS #EVOLUTION #PROFILES #OUTFLOWS #SUBSTRUCTURE #FEEDBACK #Astronomy & Astrophysics |
| Tipo |
article original article publishedVersion |
