Dark matter annihilation in the circumgalactic medium at high redshifts
S Schon, KJ Mack, JSB Wyithe
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | OXFORD UNIV PRESS | Published : 2018
Annihilating dark matter (DM) models offer promising avenues for future DM detection, in particular via modification of astrophysical signals. However, when modelling such potential signals at high redshift, the emergence of both DM and baryonic structure, as well as the complexities of the energy transfer process, needs to be taken into account. In the following paper, we present a detailed energy deposition code and use this to examine the energy transfer efficiency of annihilating DM at high redshift, including the effects on baryonic structure. We employ the PYTHIA code to model neutralino-like DM candidates and their subsequent annihilation products for a range of masses and annihilatio..View full abstract
We would like to thank Tracy Slatyer and Hongwan Liu for insightful discussions. Part of the energy transfer calculation was performed using the gSTAR national facility at Swinburne University of Technology, which is funded by Swinburne and the Australian Government's Education Investment Fund. KM is supported by the Australian Research Council Discovery Early Career Research Award. Lastly, we would like to thank the anonymous referee for their valuable comments.