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DhostHunt SIGNED

A new avenue in the hunt for dark energy

Total Cost €

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EC-Contrib. €

0

Partnership

0

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 DhostHunt project word cloud

Explore the words cloud of the DhostHunt project. It provides you a very rough idea of what is the project "DhostHunt" about.

guide    techniques    esa    accuracy    satellite    pulsations    model    theoretical    energy    decade    particles    systematic    interdisciplinary    extreme    currently    physics    interior    magnitude    helioseismic    corresponding    confront    forces    inversions    mediated    phenomenological    interactions    astrophysics    numerical    powerful    improvement    sophisticated    accordance    finest    cosmological    gravitational    broad    scalar    expansion    imprints    standard    unprecedented    date    search    dark    implications    force    quest    adiabatic    tensor    formulate    effort    relativity    line    statistical    last    devised    gravity    constraints    solar    stellar    inability    context    upcoming    helioseismology    spectrum    enhanced    details    combined    observations    orders    gr    extensions    eigenspectrum    scenarios    tightest    cosmology    challenged    introduce    promises    predictions    universe    pulsation    time    framework    genuinely    euclid    pivotal    mission    theories    dhost    severely    central    predicted    accelerated    derive    nature    probe   

Project "DhostHunt" data sheet

The following table provides information about the project.

Coordinator
AARHUS UNIVERSITET 

Organization address
address: NORDRE RINGGADE 1
city: AARHUS C
postcode: 8000
website: www.au.dk

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Denmark [DK]
 Total cost 207˙312 €
 EC max contribution 207˙312 € (100%)
 Programme 1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility)
 Code Call H2020-MSCA-IF-2019
 Funding Scheme MSCA-IF-EF-ST
 Starting year 2020
 Duration (year-month-day) from 2020-10-01   to  2022-09-30

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    AARHUS UNIVERSITET DK (AARHUS C) coordinator 207˙312.00

Map

 Project objective

Currently, General Relativity (GR) and the standard model of particles physics are severely challenged by their inability to explain the late-time accelerated expansion of the Universe, known as the “dark energy” problem. The most promising scenarios aiming to explain it are the so--called scalar-tensor theories, corresponding to extensions of GR where gravity is enhanced through a new gravitational force mediated by a scalar field. The quest for phenomenological imprints of new scalar gravitational forces has been a central effort in cosmology and astrophysics over the last decade.

My goal is to introduce helioseismology as a test of unprecedented accuracy in the search for new gravitational forces in Nature. The focus will be on the most general scalar-field extensions of GR, known as “DHOST” scalar-tensor theories. The unique ability of solar pulsations to probe the finest details of gravity in the solar interior, combined with the extreme accuracy of helioseismic observations, promises an orders-of-magnitude improvement of previous constraints.

I will formulate the theoretical framework for adiabatic stellar pulsations in this context, and with sophisticated numerical techniques, I will model the associated solar pulsation eigenspectrum. A systematic statistical analysis will be devised to confront the predictions against observations making use of powerful helioseismic inversions, and derive the tightest constraints on the most general scalar-tensor theories up to date. The cosmological implications will be predicted, in accordance with ESA’s upcoming Euclid satellite mission.

The project will introduce a genuinely novel, interdisciplinary line of research that will strongly impact a broad spectrum of cosmology and astrophysics. The new constraints will be pivotal for our understanding of scalar-gravity interactions in Nature, and are expected to guide the future modelling of dark energy, and scalar field theories in general.

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The information about "DHOSTHUNT" are provided by the European Opendata Portal: CORDIS opendata.

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