Skip to main content
SearchLoginLogin or Signup

Evidence for a strong 19.5 Hz gamma-ray flux oscillation from GRB 211211A

Presentation #107.39 in the session Stellar/Compact Objects - Poster Session.

Published onMay 03, 2024
Evidence for a strong 19.5 Hz gamma-ray flux oscillation from GRB 211211A

The gamma-ray burst (GRB) GRB 211211A is believed to have occurred due to the merger of two neutron stars or a neutron star and a black hole, despite its duration of more than a minute. Here we perform timing analysis of Fermi and Swift gamma-ray data on GRB 211211A, and find a highly significant 19.5 Hz flux oscillation, which has higher fractional amplitude at higher energies, in a ∼0.2 second segment beginning ∼1.6 seconds after the start of the burst. After presenting our analysis we discuss possible mechanisms for the oscillation.

Comments
0
comment
No comments here