22060004

Can Radio sky reveal primordial electron-proton interactions?

APA

Ramirez-Quezada, M. (2022). Can Radio sky reveal primordial electron-proton interactions? . Perimeter Institute for Theoretical Physics. http://pirsa.org/22060004

MLA

Ramirez-Quezada, Maura. Can Radio sky reveal primordial electron-proton interactions? . Perimeter Institute for Theoretical Physics, Jun. 21, 2022, http://pirsa.org/22060004

BibTex

          @misc{ scitalks_22060004,
            doi = {},
            url = {http://pirsa.org/22060004},
            author = {Ramirez-Quezada, Maura},
            keywords = {Particle Physics},
            language = {en},
            title = {Can Radio sky reveal primordial electron-proton interactions? },
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2022},
            month = {jun},
            note = {Talk #22060004 see, \url{https://scitalks.ca}}
          }
          

Maura Ramirez-Quezada University of Sydney

Source Repository PIRSA
Collection
Talk Type Scientific Series

Abstract

The cosmic radio background (CRB) contains diffuse, discrete and cosmological emission sources from the universe. In this talk, I will discuss  wether an additional contribution coming from low frequency photons is produced by free-free emission during the recombination era of the univers. These photons do not readily thermalise with the electron-proton plasma and therefore might  survive as a small non-thermal relic in the current universe.  Inclusion of such a contribution can alleviate the observed tension between existing CRB models and explain radio source counts between $100 MHz$ to $10 GHz$ to a very high degree of precision.  I will also discuss the challenges and future work we must considere in order to establish wether the signal is created or not.

Zoom Link: https://pitp.zoom.us/j/99032512514?pwd=eldocVA2VHhoUGVudmtFN3F4NHNEQT09