EPP Theory Informal Seminar: Airban Das - Galactic positron excess and dark matter annihilation
An excess seen in the positron flux from the Milky Way above 100 GeV has been a longstanding puzzle in the astrophysical community. The ordinary secondary positrons cannot explain this excess. Hence a new source of positrons in the galaxy is needed. In this talk, I will briefly discuss about pulsars and dark matter annihilation/decay that have been proposed to explain this, and about the issues with these proposals. I will also talk about our work (1911.03488) where we explained this flux coming from dark matter annihilation without running into conflict with CMB and other astrophysical constraints.
Zoom Conference number Join from PC, Mac, Linux, iOS or Android: https://stanford.zoom.us/j/763419698 Or iPhone one-tap (US Toll): +18333021536,,763419698# or +16507249799,,763419698# Or Telephone: Dial: +1 650 724 9799 (US, Canada, Caribbean Toll) or +1 833 302 1536 (US, Canada, Caribbean Toll Free) Meeting ID: 763 419 698 International numbers available: https://stanford.zoom.us/u/adr23QoLAO Meeting ID: 763 419 698 SIP: firstname.lastname@example.org