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ORIGAMI SIGNED

The origin of the Galactic magnetic field

Total Cost €

EC-Contrib. €

Partnership

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Outcomes and
results

ORIGAMI project word cloud

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

regions simulations performed dependent stellar amplified evolution essentially outstanding medium observational generate modeling galaxy reference outcome either drives simultaneous mhd consistent core zoom lack employed turbulence ideal cosmic origin differential throughly re code galactic successful self ohmic theories capturing feedback lie first tested reconnect mesh direction small tiny model heart observations lines interstellar refinement complement twist time input rotation cosmological realistic diffusion generation strength ramses magnetic adaptive dynamo star simulating milky seeds tool technique vector resolution

Project "ORIGAMI" data sheet

The following table provides information about the project.

Coordinator	IDRYMA TECHNOLOGIAS KAI EREVNAS Organization address address: N PLASTIRA STR 100 city: IRAKLEIO postcode: 70013 website: www.forth.gr 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	Greece [EL]
Total cost	152˙653 €
EC max contribution	152˙653 € (100%)
Programme	1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility)
Code Call	H2020-MSCA-IF-2016
Funding Scheme	MSCA-IF-EF-ST
Starting year	2017
Duration (year-month-day)	from 2017-06-01 to 2019-11-29

Partnership

Take a look of project's partnership.

#	participants	country	role	EC contrib. [€]
1	IDRYMA TECHNOLOGIAS KAI EREVNAS IDRYMA TECHNOLOGIAS KAI EREVNAS Organization address address: N PLASTIRA STR 100 city: IRAKLEIO postcode: 70013 website: www.forth.gr contact info title: n.a. name: n.a. surname: n.a. function: n.a. email: n.a. telephone: n.a. fax: n.a.	EL (IRAKLEIO)	coordinator	152˙653.00

Map

Project objective

Magnetic fields lie at the heart of essentially all the outstanding problems in galactic evolution. However, the measurement of interstellar magnetic fields is very challenging. We can either measure the strength or the direction of the magnetic field vector in different regions of the Milky Way. Clearly, in order to assess the impact of the magnetic field in the core processes of galactic evolution, such as star formation and stellar feedback, we need to complement the observations with simulations of the magnetic field evolution.

The most successful simulations of the galactic magnetic field evolution show that tiny magnetic seeds of cosmic origin were amplified to their current values through a dynamo process. In a dynamo, large-scale galactic processes such as differential rotation and turbulence twist magnetic field lines, and small-scale processes like Ohmic diffusion reconnect them. However, simulations of this process so far lack the simultaneous modeling of the processes that generate turbulence and the realistic small-scale diffusion that drives the dynamo.

This ambitious project will develop the first simulations that will include all the core processes of galactic evolution, such as a multi-phase interstellar medium, time-dependent star formation and stellar feedback, and the realistic non-ideal MHD terms necessary for modeling a dynamo. The simulations will be performed with the RAMSES code, a throughly tested tool for galaxy evolution simulations. The Adaptive Mesh Refinement technique employed in the code will allow capturing the self-consistent generation of turbulence by stellar feedback, and its zoom-in capabilities will allow re-simulating regions of interest with enough resolution to model the magnetic field diffusion.

The outcome will be the first self-consistent model of the Galactic magnetic field, an essential input for cosmological, galaxy-evolution, and star-formation theories, and a reference tool for observational studies.

Publications

List of publications.
year	authors and title	journal	last update
2018	Evangelia Ntormousi Magnetic fields in massive spirals: The role of feedback and initial conditions published pages: L5, ISSN: 0004-6361, DOI: 10.1051/0004-6361/201834153	Astronomy & Astrophysics 619	2020-02-05

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