Dr Alkistis Pourtsidou

Profile

I'm a lecturer in cosmology at Queen Mary University of London. My main research interest is cosmology with large-scale structure surveys, mainly Euclid and MeerKAT/SKA. I am also occasionally working on dark energy models and cosmic strings. 

I completed my PhD at the University of Nottingham in 2011, followed by a postdoc at the Univesrity of Manchester (2012), a postdoc at Bologna University (2014), and a Dennis Sciama Fellowship at the Institute of Cosmology & Gravitation in Portsmouth (2017). I have an MSc in Elementary Particle Theory from Durham University and a degree in Physics from the University of Athens.

My Github repository with code and lecture material.

Teaching

Queen Mary teaching

2017 - present: Physical Cosmology (SPA6311).

2017: Module Organiser for Synoptic Physics,

International teaching

2018: Tutor in the Data Science Intensive programme (South Africa).

2018: Lecturer in the Tonale Winter School in Cosmology (Italy).

Research

Research Interests:

I am currently working on:

• Cosmology with 21cm intensity mapping: theory, simulations, and data analysis.
• Theory and observations of large-scale structure with Euclid, MeerKAT/SKA, and LSST.
• Modelling non-linear scales for galaxy clustering.
• Dark energy models.
• Large scale structure tests of gravity and inflation.

International collaborations:

Euclid: co-lead of the InterScience Taskforce: non-linear, co-lead of the Additional Galaxy Clustering Probes WorkPackage.

SKA: Core member (Cosmology SWG), co-lead of Cosmology with SKA-LOW Focus Group.

LSST:UK Affiliate PI

Funding

STFC grant (PI): Neutral Hydrogen Intensity mapping with MeerKAT (258,000 GBP).

GCRF development grant (Co-I): SA-DISCNET: A collaborative data science training network across southern Africa and southern UK (140,000 GBP).

Newton International Exchanges (PI): Developing the synergies between Euclid and SKA (5,000 GBP).

Publications

• POURTSIDOU A, linton M, crittenden R et al. (2018). Variable sound speed in interacting dark energy models. nameOfConference

  10.1088/1475-7516/2018/04/043

  https://qmro.qmul.ac.uk/handle/123456789/36923
• POURTSIDOU A, Bose B, Baldi M (2018). Modelling Non-Linear Effects of Dark Energy. nameOfConference

  10.1088/1475-7516/2018/04/032

  https://qmro.qmul.ac.uk/handle/123456789/36883
• Romeo A, Metcalf RB, Pourtsidou A (2018). Simulations for 21 cm radiation lensing at EoR redshifts. nameOfConference

  10.1093/mnras/stx2733

  https://qmro.qmul.ac.uk/handle/123456789/29004
• Pourtsidou A, Bacon D, Crittenden R (2017). HI and cosmological constraints from intensity mapping, optical and CMB surveys. nameOfConference

  10.1093/mnras/stx1479

  https://qmro.qmul.ac.uk/handle/123456789/54763
• Pourtsidou A (2016). Testing gravity at large scales with H i intensity mapping. nameOfConference

  10.1093/mnras/stw1406

  https://qmro.qmul.ac.uk/xmlui/handle/123456789/54765
• Pourtsidou A, Tram T (2016). Reconciling CMB and structure growth measurements with dark energy interactions. nameOfConference

  10.1103/PhysRevD.94.043518

  https://qmro.qmul.ac.uk/handle/123456789/54764
• Pourtsidou A, Bacon D, Crittenden R et al. (2016). Prospects for clustering and lensing measurements with forthcoming intensity mapping and optical surveys. nameOfConference

  10.1093/mnras/stw658

  qmroHref
• Santos MG, Bull P, Camera S et al. (2016). A large sky survey with MeerKAT. nameOfConference

  doi

  qmroHref
• Pourtsidou A (2016). HI intensity mapping with MeerKAT. nameOfConference

  doi

  qmroHref
• Pourtsidou A, Bacon D, Crittenden R (2015). Cross-correlation cosmography with intensity mapping of the neutral hydrogen 21 cm emission cross-correlation cosmography with intensity ... A. Pourtsidou, D. Bacon, and R. Crittenden. nameOfConference

  10.1103/PhysRevD.92.103506

  qmroHref
• Skordis C, Pourtsidou A, Copeland EJ (2015). Parametrized post-Friedmannian framework for interacting dark energy theories. nameOfConference

  10.1103/PhysRevD.91.083537

  qmroHref
• Avgoustidis A, Pourtsidou A, Sakellariadou M (2015). Zipping and unzipping in string networks: Dynamics of Y-junctions. nameOfConference

  10.1103/PhysRevD.91.025022

  qmroHref
• Pourtsidou A, Metcalf RB (2015). Gravitational lensing of cosmological 21 cm emission. nameOfConference

  10.1093/mnras/stv102

  qmroHref
• Pourtsidou A, Metcalf RB (2014). Weak lensing with 21 cm intensity mapping at z ̃2-3. nameOfConference

  10.1093/mnrasl/slt175

  qmroHref
• Pritchard J, Ichiki K, Mesinger A et al. (2014). Cosmology from EoR/Cosmic dawn with the SKA. nameOfConference

  doi

  qmroHref
• Santos MG, Bull P, Alonso D et al. (2014). Cosmology with a SKA HI intensity mapping survey. nameOfConference

  doi

  qmroHref
• Brown ML, Bacon DJ, Camera S et al. (2014). Weak gravitational lensing with the Square Kilometre Array. nameOfConference

  doi

  qmroHref
• Brown ML, Bacon DJ, Camera S et al. (2014). Weak gravitational lensing with the square kilometre array. nameOfConference

  doi

  qmroHref
• Pourtsidou A, Skordis C, Copeland EJ (2013). Models of dark matter coupled to dark energy. nameOfConference

  10.1103/PhysRevD.88.083505

  qmroHref
• Battye RA, Browne IWA, Dickinson C et al. (2013). HI intensity mapping: A single dish approach. nameOfConference

  10.1093/mnras/stt1082

  qmroHref
• Avgoustidis A, Copeland EJ, Moss A et al. (2011). Constraints on the fundamental string coupling from B-mode experiments.. nameOfConference

  10.1103/PhysRevLett.107.121301

  qmroHref
• Pourtsidou A, Avgoustidis A, Copeland EJ et al. (2011). Scaling configurations of cosmic superstring networks and their cosmological implications. nameOfConference

  10.1103/PhysRevD.83.063525

  qmroHref
• Bevis N, Copeland EJ, Martin PY et al. (2009). Evolution and stability of cosmic string loops with Y-junctions. nameOfConference

  10.1103/PhysRevD.80.125030

  qmroHref
• O'Callaghan E, Gregory R, Pourtsidou A (2009). The cosmology of asymmetric brane modified gravity. nameOfConference

  10.1088/1475-7516/2009/09/020

  qmroHref

PhD Supervision

Project Title