Modeling of the multiwavelength emission of M87 with H.E.S.S. observations

TL;DR

This paper develops a new multi-blob synchrotron self-Compton model to explain the gamma-ray emission of M87, a non-blazar galaxy with a misaligned jet, based on H.E.S.S. observations.

Contribution

It introduces a novel modeling approach explicitly accounting for large viewing angles and moderate Lorentz factors in M87's jet.

Findings

Successful modeling of M87's gamma-ray emission with the new approach

Highlights the importance of large viewing angles in emission models

Provides insights into jet physics and emission mechanisms

Abstract

M87 is the first extragalactic source detected in the TeV range that is not a blazar. The large scale jet of M87 is not aligned with the line of sight. Modification of standard emission models of TeV blazars appears necessary to account for the gamma-ray observations made by H.E.S.S. despite this misalignment. We present a new multi-blob synchrotron self-Compton model that deals explicitly with large viewing angles and moderate values of the Lorentz factor inferred from MHD simulations of jet formation.