IPMU Colloquium

Speaker: Joshua Eby (Kavli IPMU)
Title: Terrestrial Signals from Axion Star Explosions (and other relativistic bursts) (Postdoc Colloquium)
Date (JST): Fri, Nov 19, 2021, 11:00 - 11:30
Place: Zoom
Related File: 2703.pdf
Abstract: Axion dark matter can form gravitationally-bound structures called axion stars, which are astrophysical objects with unique observational signatures. When an axion star grows enough in mass, it collapses gravitationally, and in its final moments it emits a large fraction of its energy in highly-energetic axions; we show that these axion bursts are detectable in proposed future axion DM experiments. Unlike the cold DM signal, the signal from axion star explosions is not suppressed by the axion decay constant ∝1/f, due to a cancellation with the energy emission ∝f, making this a promising avenue to potentially discover axions with otherwise difficult-to-probe parameters.
Contact: https://ipmu.zoom.us/webinar/register/WN_VTTp-bOdQY6GHCMDQrFVIg
Remarks: IPMU Postdoc Colloquium Series
Registration necessary from here: https://ipmu.zoom.us/webinar/register/WN_VTTp-bOdQY6GHCMDQrFVIg