Laboratory disruption of scaled astrophysical outflows by a misaligned magnetic field

G. Revet, B. Khiar, E. Filippov, C. Argiroffi, J. Béard, R. Bonito, M. Cerchez, S. N. Chen, T. Gangolf, D. P. Higginson, A. Mignone, B. Olmi, M. Ouillé, S. N. Ryazantsev, I. Yu. Skobelev, M. I. Safronova, M. Starodubtsev, T. Vinci, O. Willi, S. Pikuz, S. Orlando, A. Ciardi () and J. Fuchs ()
Additional contact information
G. Revet: Institute of Applied Physics RAS
B. Khiar: Sorbonne Université, Observatoire de Paris, PSL Research University, LERMA
E. Filippov: Institute of Applied Physics RAS
C. Argiroffi: Universitá di Palermo
J. Béard: LNCMI, UPR 3228, CNRS-UGA-UPS-INSA
R. Bonito: INAF-Osservatorio Astronomico di Palermo
M. Cerchez: Institut für Laser und Plasmaphysik, Heinrich Heine Universität Düsseldorf
S. N. Chen: Institute of Applied Physics RAS
T. Gangolf: LULI, CNRS, CEA, Sorbonne Université, École Polytechnique, Institut Polytechnique de Paris
D. P. Higginson: LULI, CNRS, CEA, Sorbonne Université, École Polytechnique, Institut Polytechnique de Paris
A. Mignone: Universiá di Torino
B. Olmi: INAF-Osservatorio Astronomico di Palermo
M. Ouillé: LULI, CNRS, CEA, Sorbonne Université, École Polytechnique, Institut Polytechnique de Paris
S. N. Ryazantsev: Joint Institute for High Temperatures RAS
I. Yu. Skobelev: Joint Institute for High Temperatures RAS
M. I. Safronova: Institute of Applied Physics RAS
M. Starodubtsev: Institute of Applied Physics RAS
T. Vinci: LULI, CNRS, CEA, Sorbonne Université, École Polytechnique, Institut Polytechnique de Paris
O. Willi: Institut für Laser und Plasmaphysik, Heinrich Heine Universität Düsseldorf
S. Pikuz: Joint Institute for High Temperatures RAS
S. Orlando: INAF-Osservatorio Astronomico di Palermo
A. Ciardi: Sorbonne Université, Observatoire de Paris, PSL Research University, LERMA
J. Fuchs: Institute of Applied Physics RAS

Nature Communications, 2021, vol. 12, issue 1, 1-10

Abstract: Abstract The shaping of astrophysical outflows into bright, dense, and collimated jets due to magnetic pressure is here investigated using laboratory experiments. Here we look at the impact on jet collimation of a misalignment between the outflow, as it stems from the source, and the magnetic field. For small misalignments, a magnetic nozzle forms and redirects the outflow in a collimated jet. For growing misalignments, this nozzle becomes increasingly asymmetric, disrupting jet formation. Our results thus suggest outflow/magnetic field misalignment to be a plausible key process regulating jet collimation in a variety of objects from our Sun’s outflows to extragalatic jets. Furthermore, they provide a possible interpretation for the observed structuring of astrophysical jets. Jet modulation could be interpreted as the signature of changes over time in the outflow/ambient field angle, and the change in the direction of the jet could be the signature of changes in the direction of the ambient field.

Date: 2021
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DOI: 10.1038/s41467-021-20917-x

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