Laboratory unraveling of matter accretion in young stars

Journal
Date Issued
2017
Author(s)
Revet, Guilhem
•
Chen, Sophia N.
•
•
Khiar, Benjamin
•
Filippov, Evgeny
•
•
Higginson, Drew P.
•
•
Béard, Jérôme
•
Blecher, Marius
•
Borghesi, Marco
•
Burdonov, Konstantin
•
Khaghani, Dimitri
•
Naughton, Kealan
•
Pépin, Henri
•
Portugall, Oliver
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Riquier, Raphael
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Rodriguez, Rafael
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Ryazantsev, Sergei N.
•
Yu. Skobelev, Igor
•
Soloviev, Alexander
•
Willi, Oswald
•
Pikuz, Sergey
•
Ciardi, Andrea
•
Fuchs, Julien
DOI
Abstract
Accretion dynamics in the forming of young stars is still object of debate because of limitations in observations and modelling. Through scaled laboratory experiments of collimated plasma accretion onto a solid in the presence of a magnetic field, we open first window on this phenomenon by tracking, with spatial and temporal resolution, the dynamics of the system and simultaneously measuring multiband emissions. We observe in these experiments that matter, upon impact, is laterally ejected from the solid surface, then refocused by the magnetic field toward the incoming stream. Such ejected matter forms a plasma shell that envelops the shocked core, reducing escaped X-ray emission. This demonstrates one possible structure reconciling current discrepancies between mass accretion rates derived from X-ray and optical observations.
Volume
3
Issue
11
Start page
e1700982
Uri
Url
Issn Identifier
2375-2548
Rights
open.access
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