Research: Overview

Dr. Martin Sahlén

Research Interests - Summary

I give popular science presentations in English and Swedish to all audiences - get in touch!

My work is at the intersection between theoretical and observational cosmology, with an emphasis on modelling and constraining dark energy, modified gravity, neutrino properties, non-Gaussianity, and other cosmological components - as well as methods for testing fundamental assumptions in the concordance model of cosmology. In this context, I employ state-of-the-art statistical and numerical methods to analyze data and forecast future experimental capabilities from surveys of cosmological expansion and growth of structure. Recent work includes predictions for tests of non-concordance and modified-gravity models with voids.

Some of my work focuses on using galaxy clusters and voids as cosmological probes, especially as a member of the Euclid Consortium, the Square Kilometre Array working groups, the XMM Cluster Survey (XCS) and the XXL Project.

Review my research interests - In depth


Academic Positions

2016 present


Department of Physics & Astronomy, Uppsala University, Sweden


2016 2016

Fulbright Visiting Scholar

Department of Physics & Astronomy, Johns Hopkins University, USA


2014 2016

Visiting Researcher

Beecroft Institute of Particle Astrophysics & Cosmology, University of Oxford, UK


2012 2014

Postdoctoral Fellow in Foundations of Cosmology

Beecroft Institute of Particle Astrophysics & Cosmology, University of Oxford, UK


2009 2012

Oskar Klein Postdoctoral Fellow in Cosmology

The Oskar Klein Centre, Department of Physics, Stockholm University, Sweden


2009 2009

Postdoctoral Fellow in Statistics/Mathematical Biology

Wellcome Trust Sanger Institute, Cambridge, UK



Academic Background


DPhil in Astronomy

Astronomy Centre, University of Sussex, UK

Thesis: "Bayesian constraints on dark energy and cosmic structure from supernovae, galaxy clusters and other probes"

Supervisor: Prof. Andrew Liddle


Licentiate of Philosophy in Theoretical Physics

Department of Physics, Stockholm University, Sweden

Thesis: "Direct Reconstruction of the Quintessence Potential"

Supervisors: Prof. Lars Bergström


Master of Advanced Study in Mathematics (Part III Maths)

Department of Applied Mathematics and Theoretical Physics and Clare Hall, University of Cambridge, UK



MSc Engineering Physics

Royal Institute of Technology (KTH), Stockholm, Sweden

Thesis: "Gamma Rays from Primordial Black Holes in Supersymmetric Scenarios"

Supervisor: Prof. Lars Bergström, Stockholm University

Get In Touch

Please contact me for your queries, I will get back to you soon asap!


Contact details

Uppsala University, Department of Physics and Astronomy, Box 516, SE-751 20 Uppsala, Sweden

+46 (0)18 4715971, +46 (0)76 1844240


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