Imperial College London

Mr Selim Hotinli

Faculty of Natural SciencesDepartment of Physics

Research Postgraduate







Blackett LaboratorySouth Kensington Campus





I am a physicist interested in how more is different, mainly in cosmology, but also in other areas of physics and academic disciplines. This is to ask how the often complicated small scales effect the large scales.

My current research focuses on large-scale cosmological observables. In particular, I study the secondary effects on the cosmological radiation observed by ground telescopes and satellites. Information regarding the fundamental physics accessible from current cosmological observations is heavily impacted by these effects and understanding how to account for them appropriately is one of the main challenges of contemporary cosmology.    

See also my research page for some of the recent work I have been doing. 

Additionally, I work on theoretical models of the early universe, with a focus on the phenomenological outcomes of having complicated theories explain the early universe epochs, such as inflation and reheating. More recently, I have been focused on the connections between cosmology and beyond the standard model (BSM) particle physics through studying phenomenological models that have both cosmological and particle physics implications.  

I am a PhD student, supervised by Prof. Andrew Jaffeand an IC President's Scholar

I was a Balzan Fellow (a visiting JRF by Oxford and Johns Hopkins University) in 2019. I will hold a Visiting Graduate Fellowship from Perimeter Institute for Theoretical Physics in Canada between 2019-2020.


  • (1/2) 5 September 2019 - Parallel Seminar, 'A new window into the largest scales: Transverse velocities with the moving lens effect', COSMO 19, Aachen, Germany
  • (2/2) 5 September 2019 - Parallel Seminar, 'The search for statistical anisotropy in the gravitational-wave background with pulsar-timing arrays and astrometry', COSMO 19, Aachen, Germany
  • 16 August 2019 - Seminar, 'From the moving lens effect to the largest scales: potential applications of reconstructing of velocity fields', CITA, Toronto, Canada
  • 15 August 2019 - Seminar, 'From the moving lens effect to the largest scales: potential applications of reconstructing of velocity fields', Perimeter Institute, Canada
  • August 2019 - Visitor, Perimeter Institute, Canada
  • 30 July 2019 - Seminar, 'Applications of the CMB secondaries and the moving lens effect ', UCSD, La Jolla, San Diego, USA
  • July 2019 - Visitor, UCSD, San Diego, USA
  • 2 July 2019 - Fireslide, 'Detecting the moving lens effect with Simons Observatory', Simons Observatory meeting, UC Berkeley, USA
  • 21 June 2019 - Seminar, 'The moving lens effect and potential applications', NYU, New York, USA
  • June 2019 - Visitor, NYU, USA
  • 6 June 2019 - Seminar, ''Late-time effects (secondaries) on the CMB and the moving lens effect', Carnegie Mellon, Pittsburgh, USA
  • 5 June 2019 - Seminar, 'The moving lens effect and potential applications', UPitt, Pittsburgh, USA
  • June 2019 - Visitor, University of Pittsburgh (UPitt), Pittsburgh, USA
  • 18 April 2019 - Talk, 'The search for anisotropy in the gravitational wave background with pulsar timing arrays', NanoGrav telecon
  • 3 April 2019 - Seminar, 'Late-time effects (secondaries) on the CMB and the moving lens effect', UCL, London, UK
  • 15 March 2019 - Seminar, 'The moving lens effect', DAMTP, Cambridge, UK.
  • 27 February 2019 - Seminar, 'CMB secondaries in high definition: Constraints on cosmological parameters and new observables'. Johns Hopkins University, Baltimore MD.
  • February 2019 - Visitor, Johns Hopkins University, Baltimore MD.
  • 14 December 2018 - Seminar, CMB in high definition workshop, Centre for Computational Astrophysics, Flatiron Institute, NYC.
  • June 2018 - Visitor, Flatiron Institute
  • June 2018 - Visitor, CITA
  • 5 December 2017 - Seminar, Imperial College London, 'Inflation on random potentials' (blackboard talk).
  • 26 October 2017 - Seminar, London Cosmology Discussion Meeting (LCDM), 'Phenomenology of many-field inflation'.
  • 11 October 2017 - Seminar, McGill University, Cosmology Group (blackboard talk).
  • 10 October 2017 - Seminar, CITA, 'Reheating the Universe with many scalar fields'
  • October 2017 - Visitor, CITA
  • 18 September 2017 - Seminar, UK Cosmo, Imperial College London.