$\gamma$-Cascade: A Simple Program to Compute Cosmological Gamma-Ray Propagation

Abstract

Modeling electromagnetic cascades during gamma-ray transport is important in many applications within astrophysics. This document introduces $\gamma$-Cascade, a publicly available Mathematica package which allows users to calculate observed gamma-ray fluxes from point sources as well as from a distribution of sources. $\gamma$-Cascade semi-analytically computes the effects of electromagnetic interactions during gamma-ray transport.

arXiv comment8 pages, 2 figures

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• Where do IceCube neutrinos come from? Hints from the diffuse gamma-ray flux
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• Multi-messenger High-Energy Signatures of Decaying Dark Matter and the Effect of Background Light
• Superheavy Supersymmetric Dark Matter for the origin of KM3NeT Ultra-High Energy signal
• Gamma-Rays from Star Forming Activity Appear to Outshine Misaligned Active Galactic Nuclei
• Strong Constraints on Dark Photon and Scalar Dark Matter Decay from INTEGRAL and AMS-02 data
• Limits on Early Matter Domination from the Isotropic Gamma-Ray Background
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