Lepto-hadronic processes and high-energy neutrinos in NGC 1275

TL;DR

This paper investigates whether a lepto-hadronic model can better explain the full spectral energy distribution of NGC 1275, including recent very-high-energy gamma-ray detections, and estimates the associated neutrino flux.

Contribution

It introduces a lepto-hadronic model combining SSC emission and neutral pion decay to explain NGC 1275's SED and predicts neutrino event rates for a Cherenkov telescope.

Findings

Lepto-hadronic model fits the entire SED including TeV gamma rays.

Predicted neutrino fluxes are within detectable range for km^3 Cherenkov telescopes.

Suggests hadronic processes may contribute significantly to high-energy emissions.

Abstract

The nearby active galaxy NGC 1275, has widely been detected from radio to gamma rays. Its spectral energy distribution (SED) shows a double-peak feature, which is well explained by synchrotron self-Compton (SSC) model. However, recent TeV detections might suggest that very-high-energy $\gamma$-rays (E$\geq$100 GeV) may not have a leptonic origin. We test a lepto-hadronic model to describe the whole SED through SSC emission and neutral pion decay resulting from p$\gamma$ interactions. Also, we estimate the neutrino events expected in a Km$^3$ Cherenkov telescope.