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Gieles, Mark

ICREA Research Professor at Universitat de Barcelona (UB).
Experimental Sciences & Mathematics

Short biography

Mark Gieles obtained his PhD in 2006 from Utrecht University in the Netherlands under the supervision of Prof Henny Lamers and Prof Simon Portegies Zwart. He then moved to the European Southern Observatory (ESO) in Chile as a research fellow and support astronomer on the Very Large Telescope (VLT) at Cerro Paranal in the Atacama desert. In 2009 he won a Royal Society University Research Fellowship (URF) which he took up at the Institute of Astronomy of the University of Cambridge and in 2013 he moved it to the University of Surrey, where he started a new astrophysics research group. From 2013 to 2019 he was PI of a Starting Grant of the European Research Council (ERC) and since 2017 he is a member of the editorial board of Monthly Notices of the Royal Astronomical Society (MNRAS), one of the leading peer-reviewed journals in astronomy and astrophysics.

Research interests

I am interested in the formation and dynamical evolution of globular clusters to shed light on the stellar initial mass function, black holes, gravitational waves and the dark matter distribution in galaxies. The Milky Way contains 150 globular clusters, for which we have exquisite observations, including kinematics and chemistry. To understand these, I use both star-by-star N-body simulations and dynamical mass models. I developed a new family of mass models (limepy) to search for black holes in star clusters and to probe dark matter in the Milky Way using data from the ESA-Gaia satellite and related surveys. I am also interested in the abundance problem of globular clusters. I proposed a globular cluster formation model in which a supermassive star forms via stellar collisions and pollutes the cluster with hot hydrogen-burning products in the first few million years.

Key words

Stars and stellar systems; gravitational astronomy; formation and evolution of galaxies; globular clusters; black holes; numerical methods; gravitational waves; dark matter; ESA-Gaia

ORCID

0000-0002-9716-1868
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