# Reconciling radio relic observations and simulations: The NVSS sample

## TL;DR

This paper develops a method to extract and analyze the NVSS radio relic sample to compare with simulations, aiming to better understand relic origins and address biases in observational data.

## Contribution

It introduces a homogeneous extraction framework for NVSS radio relics, enabling more accurate comparison with cosmological simulations and insights into relic properties.

## Key findings

- Correlation between relic shape and orientation with respect to clusters
- Relic surface brightness relates to cluster distance and size
- Sample extraction reduces observational biases

## Abstract

The diffusive shock acceleration scenario is usually invoked to explain radio relics, although the detailed driving mechanism is still a matter of debate. Our aim is to constrain models for the origin of radio relics by comparing observed relic samples with simulated ones. Here we present a framework to homogeneously extract the whole sample of known radio relics from NVSS so that it can be used for comparison with cosmological simulations. In this way, we can better handle intrinsic biases in the analysis of the radio relic population. In addition, we show some properties of the resulting NVSS sample relics such as the correlation between relic shape and orientation with respect to the cluster. Also, we briefly discuss the typical relic surface brightness and its relation to projected cluster distance and relic angular sizes.