Measurement of femtogauss intergalactic magnetic fields towards Mkn 501

arXiv:2509.11996 · astro-ph.HE · Submitted 2025-09-15 · Read on arXiv

astro-ph.HE

Submitted: 2025-09-15

Updated: 2026-09-26

Code: https://github.com/fermi-lat/Fermitools-conda

Terminology

• Coherence Length — 14× in this paper · explained in 2 episodes
• Phase Transitions — 3× in this paper · explained in 2 episodes
• AGN — 1× in this paper · explained in 1 episode
• AGN Feedback — 1× in this paper · explained in 1 episode
• Calibration — 1× in this paper · explained in 7 episodes
• Primordial Magnetic Fields — 1× in this paper · explained in 2 episodes

Sources

• Fermi Large Area Telescope Fourth Source Catalog Data Release 4 (4FGL-DR4)
• Revision of conservative lower bound on the intergalactic magnetic field from Fermi and Cherenkov telescope observations of extreme blazars
• Kiloparsec-scale turbulence driven by reionization may grow intergalactic magnetic fields
• Are magnetic fields in cosmic voids primordial?

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