PoS - Proceedings of Science
Volume 444 - 38th International Cosmic Ray Conference (ICRC2023) - Gamma-ray Astronomy (GA)
Investigating the Low State of NGC 1275 with VERITAS and Fermi-LAT Observations
A.K. Talluri
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Pre-published on: August 16, 2023
Published on:
Abstract
The VERITAS observatory is a ground-based imaging atmospheric Cherenkov telescope array that detects very-high-energy (VHE; E>100 GeV) gamma-ray emission from a range of astrophysical sources including more than ~40 Active Galactic Nuclei (AGN). Very few radio galaxies, AGN with relativistic jets oriented at angles offset to our line-of-sight, are detected at VHE including NGC 1275 (3C 84), the central galaxy in the Perseus cluster (z~0.0176). NGC 1275 has a long history of observations across all wavebands, and a complex morphology that has evolved with time. The origin of the TeV emission in NGC 1275 in both the flaring and non-flaring states is still not entirely understood. A VERITAS study of a January 2017 flare finds that a multi-component model is required to fit the multi-wavelength spectral energy distribution (SED). In this study, we present the EBL-corrected, Compton SED peak in the non-flaring state of NGC 1275 constructed with simultaneous VERITAS and Fermi-LAT observations over the period 2012-2017.
DOI: https://doi.org/10.22323/1.444.0661
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