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Laboratory Experiments on Magnetic Phenomena in Geo- and Astrophysics

Total Cost €


EC-Contrib. €






 LEMAP project word cloud

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

comparatively    conceived    magnetorotational    holes    experiments    mass    instabilities    planets    rossendorf    power    mri    experimental    compositional    buoyancy    structure    verified    homogenous    galaxies    vessel    dynamos    destabilization    fluids    bodies    precession    dynamo    period    engineering    2019    velocity    thermal    combinations    operation    attaining    triggered    astrophysical    riga    zentrum    dresdyn    flow    magnetically    simulations    showing    flows    ancient    first    liquid    momentum    me    effect    hzdr    discussed    helical    karlsruhe    ti    versions    play    too    progress    source    deal    sodium    accretion    besides    facility    protostars    cadarache    flowing    electrically    moon    plan    helmholtz    cosmic    standard    central    black    experiment    contrast    last    transport    tayler    cylindrical    demonstrated    breakthroughs    angular    enter    theoretical    conducting    complementary    respective    magnetic    action    numerical    investigations    once    azimuthal    radially    stars    instability    had    dresden    onto    rotating    decades    demanding    earth    objects    active   

Project "LEMAP" data sheet

The following table provides information about the project.


Organization address
postcode: 1328

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 2˙493˙250 €
 EC max contribution 2˙493˙250 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2017-ADG
 Funding Scheme ERC-ADG
 Starting year 2018
 Duration (year-month-day) from 2018-11-01   to  2023-10-31


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 


 Project objective

Cosmic magnetic fields, including those of planets, stars, and galaxies, are being generated by the homogenous dynamo effect in flowing electrically conducting fluids. Once produced, these fields may play an active role in cosmic structure formation by fostering angular momentum transport and mass accretion onto central objects, like protostars or black holes, by means of the magnetorotational instability (MRI). Complementary to the decades-long theoretical research into both effects, the last years have seen great progress in respective experimental investigations. The dynamo effect had been verified in three liquid sodium experiments in Riga, Karlsruhe and Cadarache. The helical and the azimuthal versions of the MRI, as well as the current-driven Tayler instability (TI), were demonstrated at Helmholtz-Zentrum Dresden - Rossendorf (HZDR). Here, I propose to make three further breakthroughs in this research field. First, I plan to demonstrate dynamo action based on a precession driven flow of liquid sodium in a cylindrical vessel. Besides thermal and compositional buoyancy, precession has been discussed as a complementary power source of the dynamos of the Earth, the ancient Moon, and other cosmic bodies. A second experiment will deal with magnetically triggered flow instabilities of astrophysical importance, with the main focus on attaining standard MRI, and various combinations of MRI and TI. Both experiments will be carried out at the DRESDYN facility at HZDR which has been conceived by me and which will enter into operation in 2019. In contrast to these well-advanced experimental concepts, my third liquid sodium experiment, which aims at showing the magnetic destabilization of rotating flows with radially increasing angular velocity, still requires more numerical simulations and design engineering. Given the comparatively less demanding technical parameters of this set-up, I expect first experimental results within the funding period, too.


year authors and title journal last update
List of publications.
2019 F. Stefani, A. Giesecke, T. Weier
A Model of a Tidally Synchronized Solar Dynamo
published pages: , ISSN: 0038-0938, DOI: 10.1007/s11207-019-1447-1
Solar Physics 294/5 2019-10-03

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