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Capture of dark matter particles by a galaxy in the case of a bimodal distribution of their velocities

We have analyzed the rate of capture of dark matter (DM) particles by the galaxy in the case of the existenceof two different types of DM or a bimodal velocity distribution function for DM. It is shown that, inaddition to the scenario considered in our previous work which is based on the assumption...

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Detalles Bibliográficos
Autores principales: Parnovsky, Serge, Durrer, Ruth, Parnowski, Aleksei
Lenguaje:eng
Publicado: 2022
Materias:
Acceso en línea:https://dx.doi.org/10.31526/LHEP.2023.331
https://dx.doi.org/10.31526/lhep.2023.331
http://cds.cern.ch/record/2853510
Descripción
Sumario:We have analyzed the rate of capture of dark matter (DM) particles by the galaxy in the case of the existenceof two different types of DM or a bimodal velocity distribution function for DM. It is shown that, inaddition to the scenario considered in our previous work which is based on the assumption of a unimodaldistribution, more complex scenarios are possible in which the transition to the state of intense captureand/or exit from it can occur in two stages. A detailed description is given of the change in the curve describingthe rate of capture of dark matter particles as a function of the rate of increase in the baryon massof the galaxy for various values of the rate of decrease of the DM density