1、GeV excess in the Galactic center and the Dwarf Galaxies,Lei Feng Purple Mountain Observatory,OUTLINE,Evidencefor theExistenceof Dark Matter Dark Matter Detection.GeV excess in the Galactic center and the dwarf galaxies,The Evidence of Dark Matter,Rotation CurveGravitational lensingThe Observation o
2、f cosmologyLarge scale structure and so on,Rotation Curve,Red Region: X RayBlue Region: Gravitational lensing,Large Scale Structure,The N-body Simulation of Dark Matter UniverseStructure: Core, Filament and Cosmic Void.,Filaments,Nature11224,What we know about DM particles so far ?,neutralcold (part
3、 of it can be warm)weak interaction (with itself and with ordinary matter) ? Maybe!profile (around us 0.3GeV/cm3 V 220 km/s),The methods of detecting Dark Matter,2018/9/27,10,The detection of dark matter,Direct detection：PandaX， CDEX， Xenon, CDMS, DAMA, COGENT and so onIndirect detection ：Pamela ,AT
4、IC, Fermi, HESS，AMS02，DAMPE and so onCollider: LHC,Cosmic Ray Propagation,Deep extragalactic space and early Universe,Sun,Galaxy,Galaxy Cluster,Baltz et al. 2008,Targets to detect dark matter particles,Fermi gamma-rays can provide good test of the DM models,Galactic centerGalactic haloDwarf galaxies
5、,ClustersExtra-galactic diffuseLine search,Credit: NASA/DOE/Fermi collaboration,The gamma-ray sky map produced by dark matter annihilation in our Galaxy,The J-Factor of different dark matter profile models.,The Galaxy center is the best region to detect dark matter.,The GeV Excess,Daylan et al. 2015,The template dependence of GEV excess signal,GeV excess in Fermi Pass 8 data,GeV Excess in the dwarf galaxies?,Shang Li 1511.09252,(Li, S. et al. 2016),GeV Excess in the Dwarf Galaxies?,Tuc III: 25 kpc,Thank You,The End,
