School of Physics and Astronomy

Dr Alkistis Pourtsidou


Lecturer in Cosmology

Telephone: 0207 882 3463
Room Number: G. O. Jones Building, Room 507



HI Intensity Mapping for Clustering-Based Redshift Estimation
Steven Cunnington, Ian Harrison, Alkistis Pourtsidou, David Bacon. May 11, 2018.
e-Print: arXiv:1805.04498 [astro-ph.CO] | PDF

Modelling Non-Linear Effects of Dark Energy
Benjamin Bose (Portsmouth U., ICG), Marco Baldi (U. Bologna, DIFA & Bologna Observ. & INFN, Bologna), Alkistis Pourtsidou (Portsmouth U., ICG & Queen Mary, U. of London). Nov 29, 2017. 20 pp.
Published in JCAP 1804 (2018) no.04, 032 DOI: 10.1088/1475-7516/2018/04/032
e-Print: arXiv:1711.10976 [astro-ph.CO] | PDF

Variable Sound Speed in Interacting Dark Energy Models
Mark S. Linton (Portsmouth U., ICG), Alkistis Pourtsidou (Portsmouth U., ICG & Queen Mary, U. of London), Robert Crittenden (Portsmouth U., ICG), Roy Maartens (Portsmouth U., ICG & Cape Town U.). Nov 14, 2017. 15 pp.
Published in JCAP 1804 (2018) no.04, 043
DOI: 10.1088/1475-7516/2018/04/043
e-Print: arXiv:1711.05196 [astro-ph.CO] | PDF

MeerKLASS: MeerKAT Large Area Synoptic Survey
MeerKLASS Collaboration (Mario G. Santos (Cape Town U. & Unlisted, ZA) et al.). Sep 18, 2017.
Conference: C16-05-25.1 Proceedings
e-Print: arXiv:1709.06099 [astro-ph.CO] | PDF

HI Intensity Mapping with MeerKAT
Alkistis Pourtsidou. Sep 21, 2017. 6 pp.
Published in PoS MeerKAT2016 (2018) 037
DOI: 10.22323/1.277.0037
Conference: C16-05-25.1 Proceedings
e-Print: arXiv:1709.07316 [astro-ph.CO] | PDF

Simulations for 21cm radiation lensing at EoR redshifts
Alessandro Romeo, R. Benton Metcalf, Alkistis Pourtsidou. Aug 3, 2017. 23 pp.
Published in Mon.Not.Roy.Astron.Soc. 474 (2018) no.2, 1787-1809
DOI: 10.1093/mnras/stx2733
e-Print: arXiv:1708.01235 [astro-ph.CO] | PDF

Synergistic Tests Of Inflation
Alkistis Pourtsidou. Dec 15, 2016. 9 pp.
e-Print: arXiv:1612.05138 [astro-ph.CO] | PDF

Update on The BINGO 21cm Intensity Mapping Experiment
Richard Battye (Manchester U.) et al.. Oct 21, 2016. 8 pp.
e-Print: arXiv:1610.06826 [astro-ph.CO] | PDF

HI and Cosmological Constraints from Intensity Mapping, Optical and CMB Surveys
Alkistis Pourtsidou, David Bacon, Robert Crittenden. Oct 13, 2016. 10 pp.
Published in Mon.Not.Roy.Astron.Soc. 470 (2017) no.4, 4251-4260
DOI: 10.1093/mnras/stx1479
e-Print: arXiv:1610.04189 [astro-ph.CO] | PDF

Reconciling CMB and Structure Growth Measurements with Dark Energy Interactions
Alkistis Pourtsidou, Thomas Tram (Portsmouth U., ICG). Apr 14, 2016. 10 pp.
Published in Phys.Rev. D94 (2016) no.4, 043518
DOI: 10.1103/PhysRevD.94.043518
e-Print: arXiv:1604.04222 [astro-ph.CO] | PDF


All Publications

PhD Supervision

Project Title

Cosmology Theory Meets Data: Modelling Non-Linear Scales for Dark Energy Experiments

During the last few years, we have entered the “golden era” of observational cosmology. The standard cosmological model fits the data extremely well, but requires the existence of two exotic constituents, namely dark energy in the form of a cosmological constant, and cold dark matter. Dark energy currently dominates the Universe and it is responsible for its accelerated expansion.

For full details click here