22–23 Oct 2022
University of Kansas
US/Central timezone

Globular-cluster constraints on the axion-photon coupling

22 Oct 2022, 10:00
20m
2001 Malott Hall (University of Kansas)

2001 Malott Hall

University of Kansas

Department of Physics & Astronomy University of Kansas Lawrence, KS

Speaker

Takuya Okawa

Description

We propose a novel way to seek eV-MeV axions in a globular cluster. Axions can be produced inside stars via the Primakoff process and photon coalescence, and subsequently, decay into two photons. In particular, the hot and dense plasma in the core of horizontal branch (HB) stars in globular clusters could produce eV-MeV axion efficiently. Future MeV gamma-ray telescopes might be able to detect photons from the decay of axons produced in those stars.

Author

Takuya Okawa

Co-authors

Dr Bhupal Dev (Washington University in St. Louis) Francesc Ferrer (Washington University in St Louis)

Presentation materials