How Outflows Turn Cusps into Cores, or How Cold Dark Matter is the Worst Model of Galaxy Formation, Except for all the Others

Details How Outflows Turn Cusps into Cores, or How Cold Dark Matter is the Worst Model of Galaxy Formation, Except for all the Others How Outflows Turn Cusps into Cores, or How Cold Dark Matter is the Worst Model of Galaxy Formation, Except for all the Others

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21910608g&link_type=abstract

American Astronomical Society, AAS Meeting #219, #106.08

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I will show how rapid gas outflows generated by supernova feedback turn dark matter cusps into cores, solving the long standing controversy between CDM simulations, that predicts cuspy DM profiles and observational evidence in dwarf galaxies, showing strong evidence for DM cores. I will use results from cosmological hydro simulations in a CDM cosmology to make predictions on the central slope of the DM distribution in galaxies over a wide range of stellar masses. I will compare these predictions with results form the THINGS and LITTLE THINGS surveys.
(this research is funded by NASA and the NSF)

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