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