# BlackHawk v2.0: A public code for calculating the Hawking evaporation spectra of any black hole distribution

## TL;DR

BlackHawk v2.0 is a publicly available C program that enables detailed calculations of Hawking radiation spectra from any black hole distribution, facilitating studies of black hole evaporation and particle emission.

## Contribution

The paper introduces BlackHawk v2.0, a comprehensive and user-friendly tool for computing Hawking radiation spectra for diverse black hole populations, with new features and improved capabilities.

## Key findings

- Enables calculation of primary and secondary particle spectra from black holes.
- Supports evolution of black hole distributions over time.
- Provides a manual and examples for user guidance.

## Abstract

We describe BlackHawk, a public C program for calculating the Hawking evaporation spectra of any black hole distribution. This program allows the users to compute the primary and secondary spectra of stable or long-lived particles generated by Hawking radiation of the distribution of black holes, and to study their evolution in time. The physics of Hawking radiation is presented, and the capabilities, features and usage of BlackHawk are described here under the form of a manual. This is the BlackHawk v2.0 manual, which is available on the BlackHawk webpage http://blackhawk.hepforge.org/. A brief release note summarizing the new aspects of BlackHawk v2.0 as well as illustrating examples can be found in https://arxiv.org/abs/2108.02737.