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CORDIS

Revealing Astro and Cosmo Imprints of New-Physics

Project description

Tracing the footprints of hidden matter in the universe

While much of the universe’s matter is invisible, its presence is undeniable through its gravitational effects. This mysterious substance, dark matter, holds galaxies together and shapes the cosmos, yet its true nature is unknown. With the support of the Marie Skłodowska-Curie Actions programme, the RACIN project will develop new tools to reveal dark matter signals. First, researchers will use data from the ESA Gaia satellite to detect small-scale dark matter structures and create the largest catalogue of stellar accelerations. Second, they will design innovative methods to search for axion-like particles and new radiation components by analysing their distortion effects on cosmic microwave background and quasar signals. Project efforts will provide groundbreaking tools to uncover dark matter and test new physics theories.

Objective

Despite decades of compelling evidence for the existence of Dark Matter (DM) from independent astrophysical and cosmological observations, the fundamental nature of 85% of the matter of the Universe is still unknown and remains one of the biggest open questions in modern physics. Progress requires advancing in two key areas: enhancing our understanding of DM properties by expanding the set of indirect gravitational probes, and seeking evidence for additional interactions between the dark and visible sectors, as predicted by well-motivated extensions of the Standard Model (SM). My proposal contributes to both objectives by developing and implementing new tools to reveal DM signals and test theories Beyond the SM with existing and upcoming telescopes. The first part of the proposal aims at detecting small-scale galactic DM substructure. It foresees the use of the upcoming ESA Gaia satellite time series observations to construct the largest catalogue of stellar accelerations ever built, conduct the most sensitive search of DM galactic subhalos with astrometric lensing effects, and measure average stellar masses from stacked start-star lensing signals. The second part focuses on designing novel searches for axion-like-particles and new radiation components interacting with photons, by relying on the spatially correlated spectral distortion features that they induce on the CMB and high-redshift quasars due to interaction with photons in the intervening late Universe structure. The expected result is to provide the most sensitive search strategies to look for these well-motivated New Physics scenarios in ongoing and upcoming survey data.
My expertise in DM models, data analysis, and astro/cosmo observations, combined with the CERN Theory members' deep knowledge of DM theory and cosmological probes, and further supported by astrometry and CMB/LSS experts at local institutions, provides a strong foundation for achieving the proposed research objectives.

Fields of science (EuroSciVoc)

Keywords

Programme(s)

Topic(s)

Funding Scheme

HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships

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Call for proposal

(opens in new window) HORIZON-MSCA-2024-PF-01

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Coordinator

ORGANISATION EUROPEENNE POUR LA RECHERCHE NUCLEAIRE
Net EU contribution
€ 307 958,88
Address
ESPLANADE DES PARTICULES 1 PARCELLE 11482 DE MEYRIN BATIMENT CADASTRAL 1046
1211 GENEVE 23
Switzerland
Region
Schweiz/Suisse/Svizzera Région lémanique Genève
Activity type
Research Organisations
Links
Total cost
No data