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Cat-In-hAT SIGNED

Catastrophic Interactions of Binary Stars and the Associated Transients

Total Cost €

0

EC-Contrib. €

0

Partnership

0

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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.

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

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

Map

 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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