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<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>J</mml:mi></mml:math>-factors for self-interacting dark matter in 20 dwarf spheroidal galaxies
Dwarf spheroidal galaxies are among the most promising targets for indirect dark matter (DM) searches in $\ensuremath{\gamma}$ rays. The $\ensuremath{\gamma}$-ray flux from DM annihilation in a dwarf spheroidal galaxy is proportional to the $J$-factor of the source. The $J$-factor of a dwarf spheroidal galaxy is the line-of-sight integral of the …