Search for Anisotropic Pair Halos Associated with Blazar Jets

Name: Search for Anisotropic Pair Halos Associated with Blazar Jets
Uploaded: 2026-10-02T21:29:36.581284+00:00
Duration: 1079 s
Description: Researchers searched for anisotropic gamma-ray pair halos around blazars to probe intergalactic magnetic fields (IGMF). By stacking Fermi-LAT data along jet directions, they found evidence of a non-zero IGMF at 3.8σ confidence, yielding a best-fit field strength of B0 = 2.8 x 10^-16 G. This result supports magnetized cosmic voids and aligns with previous constraints.

Researchers searched for anisotropic gamma-ray pair halos around blazars to probe intergalactic magnetic fields (IGMF). By stacking Fermi-LAT data along jet directions, they found evidence of a non-zero IGMF at 3.8σ confidence, yielding a best-fit field strength of B0 = 2.8 x 10^-16 G. This result supports magnetized cosmic voids and aligns with previous constraints.

Open the full episode