SLIDE 21 Quest for Dark Matter with Cosmic Gamma-ray Observations KMI2013, DEC 11–13, 2013, Nagoya
/21
Fermi WIMP Search in Dwarf Galaxies
✤ 15 most promising dSph (dwarf spheroidal) based on distance,
Matter/Light (M/L)
❖ New DM-dominated dSph is being discovered recently
14
UMi Leo IV Her Sex Seg 1 UMa I Dra Com Leo I CMa Wil 1 For Sgr Scl CVn II Seg 2 Car Boo II Leo II Psc II Boo III CVn I UMa II Leo V Boo I
Energy (MeV) Energy Flux (MeV cm−2 s−1)
10−7 10−6 10−5
Bootes I Bootes II Bootes III Canes Venatici I Canes Venatici II
10−7 10−6 10−5
Canis Major Carina Coma Berenices Draco Fornax
10−7 10−6 10−5
Hercules Leo I Leo II Leo IV Leo V
10−7 10−6 10−5
Pisces II Sagittarius Sculptor Segue 1 Segue 2
103 104 105 10−7 10−6 10−5
Sextans
103 104 105
Ursa Major I
103 104 105
Ursa Major II
103 104 105
Ursa Minor
103 104 105
Willman 1
10−22 10−23 10−24 10−25 10−26 hσvi (cm3 s−1)
e+e−
Observed Limit Median Expected 68% Containment 95% Containment
10−22 10−23 10−24 10−25 10−26 hσvi (cm3 s−1)
µ+µ−
101 102 103 Mass (GeV/c2) 10−22 10−23 10−24 10−25 10−26 hσvi (cm3 s−1)
τ +τ − u¯ u b¯ b
101 102 103 Mass (GeV/c2)
W +W −
arXiv:1310.0828v1
