May 16 – 19, 2023
Texas A&M University
US/Central timezone

Detecting Axion-Like Particles with Primordial Black Holes

May 18, 2023, 10:20 AM
Hawking Auditorium (Texas A&M University)

Hawking Auditorium

Texas A&M University


Tao Xu (The University of Oklahoma)


Asteroid-mass primordial black holes (PBH) can make up a fraction or all of dark matter. Their Hawking radiation process offers a novel channel to produce new particles, which is especially interesting if these particles are mostly secluded from the Standard Model sector. Future MeV gamma-ray telescopes provide exciting prospects for detecting the Hawking radiation signal from asteroid-mass PBHs. In this talk, I will first introduce the indirect detection searches for PBHs, and discuss how to distinguish the signal from PBH-produced axion-like particles in the gamma-ray spectrum.

Primary authors

Prof. Bhaskar Dutta Jae Hyeok Chang (JHU/UMD) Kaustubh Agashe Steven Clark (Brown University) Tao Xu (The University of Oklahoma) Yuhsin Tsai (University of Notre Dame)

Presentation materials