The formation of supermassive black holes in the early universe

Projektinformationen

FIRSTBHs

ID Finanzhilfevereinbarung: 656428

DOI 10.3030/656428

Das Projekt endete am 10 November 2016

EK-Unterschriftsdatum 31 März 2015

Startdatum 1 Oktober 2015

Enddatum 30 September 2017

Finanziert unter

• EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions

Gesamtkosten € 173 076,00

EU-Beitrag € 173 076,00

Koordiniert durch

CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS
France

Ziel

Supermassive black holes (BHs) of more than a billion solar masses have been observed at z > 6 when the Universe was less than a billion years old. Forming such objects is highly challenging, as high accretion rates need to be maintained over very long time scales. Seed BHs with masses of 10^4 -10^6 solar masses, as predicted by the “direct collapse” scenario, provide a promising pathway to explain their presence. During this project, I will derive the mass distribution of the BHs to provide constraints on their masses and growth mechanisms which can tested with upcoming missions such as JWST and ATHENA. To achieve this goal, I will build up a statistical sample of high-resolution adaptive mesh refinement (AMR) simulations of massive primordial halos, following the dynamics of the gas from cosmological scales down to scales comparable to the solar system. The gravitational collapse initially forms a rapidly accreting protostar, which subsequently moves to the main sequence providing ultra-violet (UV) feedback and finally collapses to a massive BH. In the first part of the project, I will compute the impact of stellar feedback from the supermassive star and follow the time evolution of the mass accretion rates. Subsequently, the simulations will be extended by incorporating the X-ray feedback from the BH itself. Finally, scaling relations between the properties of the host halos and BH masses will be derived. This work will provide the first detailed assessment of the mass distribution of seed BHs, and their observational properties. This
is a substantial step forward to understand the origin of high-redshift BHs.

Wissenschaftliches Gebiet

• natural sciences › physical sciences › nuclear physics
• natural sciences › physical sciences › astronomy › physical cosmology › big bang
• natural sciences › physical sciences › astronomy › astrophysics › black holes
• natural sciences › physical sciences › theoretical physics › particle physics › photons

Schlüsselbegriffe

• Black hole formation
• early Universe
• First galaxies
• Cosmology theory
• First quasars
• numerical simulations
• AGN & stellar UV feedback

Programm/Programme

• H2020-EU.1.3. - EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions Main Programme
• H2020-EU.1.3.2. - Nurturing excellence by means of cross-border and cross-sector mobility

Thema/Themen

• MSCA-IF-2014-EF - Marie Skłodowska-Curie Individual Fellowships (IF-EF)

Aufforderung zur Vorschlagseinreichung

H2020-MSCA-IF-2014

Finanzierungsplan

MSCA-IF - Marie Skłodowska-Curie Individual Fellowships (IF)

Koordinator

CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS

• Netto-EU-Beitrag: € 173 076,00
• Adresse: RUE MICHEL ANGE 3 ; 75794 Paris ; Frankreich
• Region: Ile-de-France › Ile-de-France › Paris
• Aktivitätstyp: Research Organisations
• Gesamtkosten: € 173 076,00