Exceptional Gamma-Ray Flaring Activity of the Blazar S4 0954+65 in Early 2025

arXiv:2609.29873 · astro-ph.HE, astro-ph.GA · Submitted 2026-09-24 · Read on arXiv

astro-ph.HE, astro-ph.GA

Submitted: 2026-09-24

Updated: 2026-09-24

Code: https://github.com/physicsranger/make4FGLxml

Terminology

• Core — 17× in this paper · explained in 2 episodes
• AGN — 10× in this paper · explained in 1 episode
• Adam — 3× in this paper · explained in 2 episodes
• Calibration — 3× in this paper · explained in 7 episodes
• Einstein Probe — 3× in this paper
• Space Science Data Center — 3× in this paper
• Trace — 3× in this paper · explained in 2 episodes
• GHz Very Long Baseline Array — 2× in this paper
• Abundance — 1× in this paper · explained in 1 episode
• Activity Interval — 1× in this paper · explained in 1 episode
• Anti-correlation — 1× in this paper · explained in 3 episodes
• Aperture — 1× in this paper · explained in 1 episode
• Aperture Photometry — 1× in this paper · explained in 1 episode
• Cherenkov Telescope Array Observatory — 1× in this paper
• Consistency — 1× in this paper · explained in 3 episodes
• Degeneracy — 1× in this paper · explained in 3 episodes
• Imaging X-ray Polarimetry Explorer — 1× in this paper
• Inverse Compton (IC) scattering — 1× in this paper · explained in 2 episodes
• Modified Julian Date — 1× in this paper
• National Natural Science Foundation of China — 1× in this paper
• Physical Constraints — 1× in this paper · explained in 7 episodes
• Robustness — 1× in this paper · explained in 5 episodes
• Temporal Correlations — 1× in this paper · explained in 2 episodes
• Wide-field X-ray Telescope — 1× in this paper
• Zwicky Transient Facility — 1× in this paper

Sources

• Improved AGN light curve analysis with the z-transformed discrete correlation function
• Fermi Large Area Telescope Fourth Source Catalog Data Release 4 (4FGL-DR4)
• Extragalactic neutrino factories

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