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Impact of Magnetic field on Emergent solar spectra

Total Cost €


EC-Contrib. €






 IMagE project word cloud

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

wavelengths    magnetic    until    mhd    evolve    realistic    aditya    relied    synthesis    modeling    valid    3d    indian    dark    positions    computationally    strengths    properly    magnetohydrodynamic    blanketing    modifies    surface    progress    irradiance    time    l1    accurate    timescales    maiden    faculae    ingredient    longer    data    modulate    simulations    grid    sun    amplitude    varies    day    instance    efficient    measured    terrestrial    line    transfer    equilibrium    computations    bright    image    resolution    mission    disc    made    ultraviolet    controversy    brightness    appearing    departures    mechanisms    models    validated    solar    variability    influence    incorporation    controversial    observations    resolving    radiative    spectra    lte    device    atmospheres    structure    atmosphere    spots    computed    analyze    uv    sunrise    local    spatial    climate    physics    missions    variations    extremely    physical    breakthrough    simplifications    components    thermodynamic   

Project "IMagE" data sheet

The following table provides information about the project.


Organization address
city: Munich
postcode: 80539

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 Germany [DE]
 Total cost 159˙460 €
 EC max contribution 159˙460 € (100%)
 Programme 1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility)
 Code Call H2020-MSCA-IF-2017
 Funding Scheme MSCA-IF-EF-ST
 Starting year 2019
 Duration (year-month-day) from 2019-01-01   to  2020-12-31


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 


 Project objective

Solar brightness varies at all measured timescales and wavelengths, and can affect terrestrial atmosphere and climate. Variations on timescales longer than a day are driven by the solar surface magnetic activity. Solar magnetic field modifies the structure of the solar atmosphere and its radiative properties, appearing at the surface as dark spots and bright faculae. These features continuously evolve with time and modulate solar brightness. Although significant progress has been made in modeling solar brightness variations, their amplitude in the ultraviolet (UV) range remains controversial. IMagE aims at resolving this controversy.

A crucial ingredient of the irradiance models are brightness spectra of the various magnetic components. Spectra that have been used until now relied on a number of simplifications that are not valid in the UV. To properly account for the physical mechanisms which influence the solar variability in the UV, including the line blanketing and departures from local thermodynamic equilibrium (LTE), non-LTE computations of spectra from realistic 3D magnetohydrodynamic (MHD) atmospheres are needed. This is computationally extremely challenging. IMagE will exploit state-of-the-art MHD and radiative transfer simulations to device a method for efficient, yet accurate, synthesis of the non-LTE brightness spectra of the different magnetic components. This method will be validated against high spatial resolution observations of the Sun. Incorporation of the spectra computed with this method in the physics-based irradiance models will lead to a breakthrough in our understanding of the solar UV irradiance variability. The grid of non-LTE spectra for different magnetic field strengths and solar disc positions produced within IMagE can also be used to analyze the data from future missions, for instance SUNRISE III and the maiden Indian solar mission Aditya-L1.

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

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