Radio Sky: Near and Far

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• Anastasia Fialkov
• Wednesday 10 October 2018, 13:15-13:45
• Sackler Lecture Theatre, IoA.

If you have a question about this talk, please contact Dr Giovanni Rosotti.

Radio observations at and below 1 GHz are a potentially powerful way to probe Reionization history and to learn about primordial star formation. In my talk I will discuss two types of observations, namely Fast Radio Bursts (FRBs) and the 21-cm line of neutral hydrogen. FRBs, discovered in 2007, are cosmological transient signals of undetermined origin detected at ~1 GHz. Dispersion measure of FRBs depends on the total column of ionized gas and can be used to directly constrain Reionization. I will discuss new ways to constrain the population of FRBs. On the other hand, the predicted 21-cm signal of neutral hydrogen contains information on the neutral Universe and can be used to study processes of star and black hole formation. I will focus on modelling the signal and discuss the latest observational constraints on the high redshift Universe.

This talk is part of the Institute of Astronomy Seminars series.

This talk is included in these lists:

• Cambridge Astronomy Talks
• Combined External Astrophysics Talks DAMTP
• Cosmology lists
• Cosmology, Astrophysics and General Relativity
• Institute of Astronomy Seminars
• Institute of Astronomy Talk Lists
• Kavli Institute for Cosmology Talk Lists
• Priscilla
• Sackler Lecture Theatre, IoA

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