Bayesian Identification of Global 21cm Signal Depth Origin

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• Dominic Anstey, University of Cambridge
• Thursday 06 March 2025, 10:00-11:00
• Martin Ryle Large Meeting Room, KICC.

If you have a question about this talk, please contact Harry Bevins.

Theoretical models have suggested that the depth of the Global 21cm signal could be enhanced beyond that of standard astrophysics by the presence of excess radio backgrounds or excess cooling of the intergalactic medium. However, these two effects will manifest similarly in the 21cm signal itself, making them hard to distinguish from the signal alone. In this talk, I will discuss a potential method for telling these two cases apart via physical modelling of the foreground components, in order to identify the presence or absence of an excess background component in those foregrounds.

This talk is part of the 21cm Discussion Group series.

This talk is included in these lists:

• 21cm Discussion Group
• Cambridge Astronomy Talks
• Combined External Astrophysics Talks DAMTP
• Cosmology, Astrophysics and General Relativity
• Institute of Astronomy Talk Lists
• Martin Ryle Large Meeting Room, KICC

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