6533b821fe1ef96bd127b9d4
RESEARCH PRODUCT
Laboratory disruption of scaled astrophysical outflows by a misaligned magnetic field
Mirela CerchezDrew HigginsonDrew HigginsonE. D. FilippovT. GangolfT. GangolfS. A. PikuzS. A. PikuzI. Yu. SkobelevI. Yu. SkobelevB. KhiarB. KhiarG. RevetG. RevetTommaso VinciB. OlmiSalvatore OrlandoJ. BéardO. WilliRosaria BonitoM. V. StarodubtsevCostanza ArgiroffiCostanza ArgiroffiM. SafronovaM. OuilléS. N. RyazantsevS. N. RyazantsevJulien FuchsAndrea CiardiAndrea MignoneSophia Chensubject
ScienceAstrophysics::High Energy Astrophysical PhenomenaNozzleoutflows magnetohydrodynamics(MHD) shockwaves astrophysical jetsGeneral Physics and AstronomyFOS: Physical sciencesAstrophysics01 natural sciencesArticleGeneral Biochemistry Genetics and Molecular BiologyCollimated lightSettore FIS/05 - Astronomia E AstrofisicaAmbient field0103 physical sciencesAstrophysics::Solar and Stellar AstrophysicsMagnetic pressure010306 general physics010303 astronomy & astrophysicsSolar and Stellar Astrophysics (astro-ph.SR)Astrophysics::Galaxy AstrophysicsLaboratory astrophysicsPhysicsHigh Energy Astrophysical Phenomena (astro-ph.HE)Jet (fluid)MultidisciplinaryQLaser-produced plasmasGeneral ChemistryPhysics - Plasma PhysicsMagnetic fieldPlasma Physics (physics.plasm-ph)Astrophysics - Solar and Stellar AstrophysicsPhysics::Accelerator PhysicsOutflowHigh Energy Physics::ExperimentAstrophysics - High Energy Astrophysical Phenomena[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]description
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2021-01-01 |