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Cat-In-hAT SIGNED

Catastrophic Interactions of Binary Stars and the Associated Transients

Total Cost €

0

EC-Contrib. €

0

Partnership

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 Cat-In-hAT project word cloud

Explore the words cloud of the Cat-In-hAT project. It provides you a very rough idea of what is the project "Cat-In-hAT" about.

critically    red    physics    catastrophic    energy    sources    illuminate    commences    physical    stability    merger    reactions    angular    waves    compact    profiles    ground    surveys    radiation    perhaps    momentum    light    progress    copious    predictions    signatures    line    depends    variant    time    despite    class    remnant    connect    unbind    dust    brightenings    domain    break    accompanied    angles    urgently    amplification    rt    fundamental    expansion    dynamical    coupling    object    mass    magnetic    binaries    slow    moving    hydrodynamics    timescales    velocities    gravitational    examine    area    observations    magnetohydrodynamics    mesh    paradigm    wave    dimensional    timescale    outburst    evolution    chemical    channels    binary    transient    theoretical    orbital    detectors    3d    comprehensively    exhibiting    centuries    polarimetric    least    facilities    spectra    regime    cee    interpret    probe    interactions    microphysics    transients    star    inaccessible    remnants    resolve    motivated    moment    entirely    envelope    curves    molecules   

Project "Cat-In-hAT" data sheet

The following table provides information about the project.

Coordinator
UNIVERZITA KARLOVA 

Organization address
address: OVOCNY TRH 560/5
city: PRAHA 1
postcode: 116 36
website: www.cuni.cz

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 Czech Republic [CZ]
 Total cost 1˙243˙218 €
 EC max contribution 1˙243˙218 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2018-STG
 Funding Scheme ERC-STG
 Starting year 2019
 Duration (year-month-day) from 2019-01-01   to  2023-12-31

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    UNIVERZITA KARLOVA CZ (PRAHA 1) coordinator 1˙243˙218.00

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 Project objective

'One of the crucial formation channels of compact object binaries, including sources of gravitational waves, critically depends on catastrophic binary interactions accompanied by the loss of mass, angular momentum, and energy ('common envelope' evolution - CEE). Despite its importance, CEE is perhaps the least understood major phase of binary star evolution and progress in this area is urgently needed to interpret observations from the new facilities (gravitational wave detectors, time-domain surveys).

Recently, the dynamical phase of the CEE has been associated with a class of transient brightenings exhibiting slow expansion velocities and copious formation of dust and molecules (red transients - RT). A number of RT features, especially the long timescale of mass loss, challenge the existing CEE paradigm.

Motivated by RT, I will use a new variant of magnetohydrodynamics to comprehensively examine the 3D evolution of CEE from the moment when the mass loss commences to the remnant phase. I expect to resolve the long timescales observed in RT, characterize binary stability in 3D with detailed microphysics, illuminate the fundamental problem of how is orbital energy used to unbind the common envelope in a regime that was inaccessible before, and break new ground on the amplification of magnetic fields during CEE.

I will establish RT as an entirely new probe of the CEE physics by comparing my detailed theoretical predictions of light curves from different viewing angles, spectra, line profiles, and polarimetric signatures with observations of RT. I will accomplish this by coupling multi-dimensional moving mesh hydrodynamics with radiation, dust formation, and chemical reactions. Finally, I will examine the physical processes in RT remnants on timescales of years to centuries after the outburst to connect RT with the proposed merger products and to identify them in time-domain surveys. '

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The information about "CAT-IN-HAT" are provided by the European Opendata Portal: CORDIS opendata.

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