Laboratory unraveling of matter accretion in young stars

Costanza Argiroffi, Rosaria Bonito, Jérôme Béard, Sophia N. Chen, Drew P. Higginson, Konstantin Burdonov, Guilhem Revet, Raphael Riquier, Benjamin Khiar, Dimitri Khaghani, Rafael Rodriguez, Kealan Naughton, Evgeny Filippov, Alexander Soloviev, Sergei N. Ryazantsev, Marius Blecher, Sergey Pikuz, Marco Borghesi, Oliver Portugall, Andrea CiardiIgor Yu. Skobelev, Oswald Willi, Salvatore Orlando, Henri Pépin, Julien Fuchs, Rosaria Bonito, Marco Borghesi

Risultato della ricerca: Articlepeer review

18 Citazioni (Scopus)

Abstract

Accretion dynamics in the formation of young stars is still a matter of debate because of limitations in observations and modeling. Through scaled laboratory experiments of collimated plasma accretion onto a solid in the presence of a magnetic field, we open a 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 ejected laterally from the solid surface and then refocused by the magnetic field toward the incoming stream. This ejected matter forms a plasma shell that envelops the shocked core, reducing escaped x-ray emission. This finding demonstrates one possible structure reconciling current discrepancies between mass accretion rates derived from x-ray and optical observations, respectively.
Lingua originaleEnglish
Numero di pagine9
RivistaScience advances
Volume3
Stato di pubblicazionePublished - 2017

All Science Journal Classification (ASJC) codes

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