%0 Generic %1 Maccio'2009 %A Maccio', Andrea V. %A Fontanot, Fabio %D 2009 %K Dark Limit Mass Matter Warm %T How cold is Dark Matter? Constraints from Milky Way Satellites %U http://arxiv.org/abs/0910.2460 %X We test the luminosity function of Milky Way satellites as a constraint for the nature of Dark Matter particles. We perform dissipationless high-resolution N-body simulations of the evolution of Galaxy-sized halo in the standard Cold Dark Matter (CDM) model and in four Warm Dark Matter (WDM) scenarios, with a different choice for the WDM particle mass (m_w). We then combine the results of the numerical simulations with semi-analytic models for galaxy formation, to infer the properties of the satellite population. Quite surprisingly we find that even WDM models with relatively low m_w values (2-5 keV) are able to reproduce the observed abundance of ultra faint (Mv<-9) dwarf galaxies, as well as the observed relation between Luminosity and mass within 300 pc. Our results suggest a lower limit of 1 keV for thermal warm dark matter, in broad agreement with previous results from other astrophysical observations like Lyman-alpha forest and gravitational lensing.

@misc{Maccio'2009, abstract = { We test the luminosity function of Milky Way satellites as a constraint for the nature of Dark Matter particles. We perform dissipationless high-resolution N-body simulations of the evolution of Galaxy-sized halo in the standard Cold Dark Matter (CDM) model and in four Warm Dark Matter (WDM) scenarios, with a different choice for the WDM particle mass (m_w). We then combine the results of the numerical simulations with semi-analytic models for galaxy formation, to infer the properties of the satellite population. Quite surprisingly we find that even WDM models with relatively low m_w values (2-5 keV) are able to reproduce the observed abundance of ultra faint (Mv<-9) dwarf galaxies, as well as the observed relation between Luminosity and mass within 300 pc. Our results suggest a lower limit of 1 keV for thermal warm dark matter, in broad agreement with previous results from other astrophysical observations like Lyman-alpha forest and gravitational lensing. }, added-at = {2009-10-15T16:40:32.000+0200}, author = {Maccio', Andrea V. and Fontanot, Fabio}, biburl = {https://www.bibsonomy.org/bibtex/24236c0ea7c13bed86de61e02003024d9/ad4}, description = {How cold is Dark Matter? Constraints from Milky Way Satellites}, interhash = {000491bca7eb52a27bf0d512a27919ac}, intrahash = {4236c0ea7c13bed86de61e02003024d9}, keywords = {Dark Limit Mass Matter Warm}, note = {cite arxiv:0910.2460 Comment: 5 pages, 5 figures, submitted to MNRAS}, timestamp = {2009-10-15T16:40:32.000+0200}, title = {{H}ow cold is {D}ark {M}atter? {C}onstraints from {M}ilky {W}ay {S}atellites}, url = {http://arxiv.org/abs/0910.2460}, year = 2009 }