Dr Alkistis Pourtsidou

Dr Alkistis Pourtsidou

Lecturer in Cosmology
School of Physics and Astronomy
Queen Mary, University of London
327 Mile End Road, London, E1 4NS

Telephone: 0207 882 3463
Room: GO Jones 507

Theoretical and Observational Cosmology

My current research is largely focused on radio cosmology. I am working on an innovative observational technique called 21-cm intensity mapping, which does not require the detection of individual galaxies but instead it measures the collective HI emission from large regions (see Fig. 1). The end product is a set of temperature maps, similar to the CMB but in 3D, i.e. across the sky and along time. I am particularly interested in  cross-correlations of intensity mapping with optical and CMB surveys in order to probe the evolving history of the Universe, study dark energy and inflation, and mitigate systematic effects. I am also working on the construction, parametrization and observational signatures of Interacting Dark Energy theories.

Fig.1: From individual galaxies (Left) to intensity maps (Right).

International Collaborations

  • SKA

Undergraduate teaching and supervision

  • Tutor for Synoptic Physics (Semester A)
  • Lecturer for Physical Cosmology (Semester B)
  • Supervision of undergraduate projects

An up-to-date list of my publications from the INSPIRE database can be found here.

This is not an exhaustive list and I would be happy to discuss other project possibilities.