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SmartStars SIGNED

Pathways towards forming super-massive black holes in the early Universe

Total Cost €


EC-Contrib. €






 SmartStars project word cloud

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

msun    fragmentation    compelling    particles    regarding    probe    region    designed    bang    guide    jwst    objects    grand    free    infrared    missions    upcoming    spearhead    ska    central    unanswered    astrophysics    explaining    provides    black    prepare    evolution    solution    fellowship    explained    quickly    contain    collapse    disciplinary    questions    universe    many    scenario    progress    star    turlough    sun    times    unusually    will    techniques    innovative    perhaps    direct    existence    masses    metal    mechanism    university    physics    answering    object    interpret    radio    xray    observational    stars    thoroughly    function    matched    billion    bhs    athena    massive    grow    origin    hosted    seed    algorithms    big    mass    exist    time    regard    lyman    extremely    alpha    campaigns    form    see    dcu    expertise    prof    discovered    super    producing    ssps    capture    ing    10000    source    tested    nature    smart    dominate    holes    inter    question    gt    stellar    quasi    hole    dublin    downes    bh    chandra    city   

Project "SmartStars" data sheet

The following table provides information about the project.


Organization address
address: Glasnevin
city: DUBLIN
postcode: 9

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 Ireland [IE]
 Project website
 Total cost 187˙866 €
 EC max contribution 187˙866 € (100%)
 Programme 1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility)
 Code Call H2020-MSCA-IF-2015
 Funding Scheme MSCA-IF-EF-ST
 Starting year 2016
 Duration (year-month-day) from 2016-10-03   to  2018-10-02


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    DUBLIN CITY UNIVERSITY IE (DUBLIN) coordinator 187˙866.00


 Project objective

Many questions remain unanswered regarding the origin and evolution of Black Holes (BHs). One such question concerns how BHs with masses of one billion times the mass of the sun could exist less than one billion years after the Big Bang? How could these objects grow so massive so quickly? Explaining their existence remains one of the grand challenges in astrophysics. The ‘direct collapse’ mechanism provides a compelling solution: if unusually massive stars can form early in the Universe producing large seed BHs (M >= 10000 Msun ) then the existence of massive BHs at early times can be explained. During this fellowship, hosted at Dublin City University (DCU), I will develop, in collaboration with Prof. Downes, novel and innovative techniques (smart star particles (SSPs) - see part B) which will spearhead further development of the direct collapse scenario. My BH expertise will be matched with the expertise in star formation modelling of Prof. Turlough Downes resulting in a unique inter-disciplinary collaboration. This research will allow the direct collapse mechanism to be fully tested, compared against current observational results and used to guide upcoming missions. The SSPs will contain algorithms designed to capture the essential physics of black hole seed formation. Their function will be to allow us to probe the nature of the central object - does a super-massive star form, or perhaps a quasi-star, or does fragmentation dominate resulting in the formation of stellar mass black holes? Answering these questions will allow us to prepare more thoroughly for upcoming missions. In this regard the research proposal is extremely timely, given recent observational progress, where a Lyman-alpha source has been discovered within a metal free region at very early time. The detailed results we will produce will be used to guide and interpret current and future observational campaigns including Chandra (XRay), JWST (infrared), SKA (radio) and Athena (Xray).


year authors and title journal last update
List of publications.
2016 James S. Bolton, Ewald Puchwein, Debora Sijacki, Martin G. Haehnelt, Tae-Sun Kim, Avery Meiksin, John A. Regan, Matteo Viel
The Sherwood simulation suite: overview and data comparisons with the Lyman α forest at redshifts 2 ≤ z ≤ 5
published pages: 897-914, ISSN: 0035-8711, DOI: 10.1093/mnras/stw2397
Monthly Notices of the Royal Astronomical Society 464/1 2019-05-07
2017 Bhaskar Agarwal, John Regan, Ralf S. Klessen, Turlough P. Downes, Erik Zackrisson
An analytic resolution to the competition between Lyman–Werner radiation and metal winds in direct collapse black hole hosts
published pages: 4034-4038, ISSN: 0035-8711, DOI: 10.1093/mnras/stx1528
Monthly Notices of the Royal Astronomical Society 470/4 2019-05-07
2017 Anna T. P. Schauer, John Regan, Simon C. O. Glover, Ralf S. Klessen
The formation of direct collapse black holes under the influence of streaming velocities
published pages: 4878-4884, ISSN: 0035-8711, DOI: 10.1093/mnras/stx1915
Monthly Notices of the Royal Astronomical Society 471/4 2019-05-07
2018 Tilman Hartwig, Bhaskar Agarwal, John A Regan
Gravitational wave signals from the first massive black hole seeds
published pages: L23-L27, ISSN: 1745-3933, DOI: 10.1093/mnrasl/sly091
Monthly Notices of the Royal Astronomical Society: Letters 479/1 2019-05-07
2018 John A Regan, Turlough P Downes
Fragmentation inside atomic cooling haloes exposed to Lyman–Werner radiation
published pages: 4636-4647, ISSN: 0035-8711, DOI: 10.1093/mnras/sty134
Monthly Notices of the Royal Astronomical Society 475/4 2019-05-07
2018 John A Regan, Turlough P Downes
Rise of the first supermassive stars
published pages: 5037-5049, ISSN: 0035-8711, DOI: 10.1093/mnras/sty1289
Monthly Notices of the Royal Astronomical Society 478/4 2019-05-07
2018 Britton D Smith, John A Regan, Turlough P Downes, Michael L Norman, Brian W O’Shea, John H Wise
The growth of black holes from Population III remnants in the Renaissance simulations
published pages: 3762-3773, ISSN: 0035-8711, DOI: 10.1093/mnras/sty2103
Monthly Notices of the Royal Astronomical Society 480/3 2019-05-07
2017 John A. Regan, Eli Visbal, John H. Wise, Zoltán Haiman, Peter H. Johansson, Greg L. Bryan
Rapid formation of massive black holes in close proximity to embryonic protogalaxies
published pages: 75, ISSN: 2397-3366, DOI: 10.1038/s41550-017-0075
Nature Astronomy 1/4 2019-06-13
2017 Britton D. Smith, Greg L. Bryan, Simon C. O. Glover, Nathan J. Goldbaum, Matthew J. Turk, John Regan, John H. Wise, Hsi-Yu Schive, Tom Abel, Andrew Emerick, Brian W. O\'Shea, Peter Anninos, Cameron B. Hummels, Sadegh Khochfar
grackle: a chemistry and cooling library for astrophysics
published pages: 2217-2234, ISSN: 0035-8711, DOI: 10.1093/mnras/stw3291
Monthly Notices of the Royal Astronomical Society 466/2 2019-06-13

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