15–16 Nov 2025
University of Kansas
US/Central timezone

Constraints on Heavy Axion-like Particles from Gamma-Ray Bursts

15 Nov 2025, 16:54
18m
2048 Malott Hall (University of Kansas)

2048 Malott Hall

University of Kansas

Department of Physics & Astronomy University of Kansas Lawrence, KS

Speaker

Saurav Das (Washington University in St. Louis)

Description

Gamma ray bursts (GRBs) are one of the most luminous astrophysical sources that can copiously produce axion like particles (ALPs). We delineate the uncertainties in ALP production in the relativistic jets surrounding GRBs. Under conservative assumptions, we find the ALPs produced in the jets can escape and subsequently decay. We show that the decay of axions can produce a secondary fireball for masses $m_a\sim 100$MeV and $g_{a\gamma}\sim 10^{-10}\text{GeV}^{-1}$ that can have observable astrophysical signatures.

Authors

Bhupal Dev (Washington University in St. Louis) Christopher Cappiello Saurav Das (Washington University in St. Louis) Soebur Razzaque Takuya Okawa

Presentation materials