# Modeling SNRs with a Simple Model of Non-Linear Shock Acceleration

### Donald C. Ellison

## Abstract

A simple, approximate model of nonlinear diffusive shock acceleration
is used to produce proton and electron spectra from supernova remnant
(SNR) blast waves. These spectra are then used to generate broad-band
photon spectra from radio to TeV g-rays which can be compared
with observations. The model uses a three-power-law approximation to
the concave superthermal momentum spectrum expected from shock
acceleration, plus a thermal peak at the shocked plasma temperature,
to yield complete spectra. Photons are produced by bremsstrahlung,
synchrotron, inverse-Compton, and pion-decay preocesses. While quick
and easy to use for fitting data, the model contains the essential
physics seen in more complete (and computationally intensive)
numerical solutions.

File translated from T_{E}X by T_{T}H, version 2.32.

On 16 Jul 1999, 09:18.