No dark matter annihilation signal is detected from dwarf galaxies; upper limits on the velocity-weighted cross-section are set at order 10^{-23} cm^3 s^{-1} for DM masses 1-10^4 TeV.
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Multi-instrument analysis interprets HESS J1857+026 as a pulsar wind nebula with age 16-21 kyr and B-field 0.4-1.6 μG, plus possible hadronic emission below 10 GeV and suppressed local diffusion.
citing papers explorer
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Improved Heavy Dark Matter Annihilation Search from Dwarf Galaxies with HAWC
No dark matter annihilation signal is detected from dwarf galaxies; upper limits on the velocity-weighted cross-section are set at order 10^{-23} cm^3 s^{-1} for DM masses 1-10^4 TeV.
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A Multiwavelength Interpretation of HESS J1857+026 Emission Using the Fermi-LAT, VERITAS, and HAWC Observatories
Multi-instrument analysis interprets HESS J1857+026 as a pulsar wind nebula with age 16-21 kyr and B-field 0.4-1.6 μG, plus possible hadronic emission below 10 GeV and suppressed local diffusion.