6533b7d1fe1ef96bd125ce5a
RESEARCH PRODUCT
Laboratory formation of a scaled protostellar jet by coaligned poloidal magnetic field
Hans-peter SchlenvoigtG. RevetMarco BorghesiMarco BorghesiMartín Huarte-espinosaMartín Huarte-espinosaI. Yu. SkobelevHenri PépinK. NaughtonMotoaki NakatsutsumiO. PortugallAndrea CiardiAndrea CiardiJ. BéardT. HerrmannsdörferZakary BurkleyThomas E. CowanThomas E. CowanJulien FuchsS. A. PikuzS. A. PikuzFlorian KrollFlorian KrollTommaso VinciR. RiquierA. Ya. FaenovA. Ya. FaenovA. A. SolovievRosaria BonitoRosaria BonitoCaterina RicondaL. RomagnaniAdam FrankDrew HigginsonJ. BilletteBruno AlbertazziBruno AlbertazziBruno AlbertazziSophia Chensubject
jetsPhysicsJet (fluid)MultidisciplinaryShock (fluid dynamics)Young stellar objectAstrophysics::High Energy Astrophysical PhenomenaFlow (psychology)PlasmaConical surfaceAstrophysics01 natural sciencesSIMULATIONS010305 fluids & plasmasMagnetic fieldCOLLIMATION[PHYS.COND.CM-S]Physics [physics]/Condensed Matter [cond-mat]/Superconductivity [cond-mat.supr-con]DISCOVERY0103 physical sciencesDG-TAURI010303 astronomy & astrophysicsACCRETION DISCSAstrophysics::Galaxy AstrophysicsDRIVEN JETSdescription
International audience; Although bipolar jets are seen emerging from a wide variety of astrophysical systems, the issue of their formation and morphology beyond their launching is still under study. Our scaled laboratory experiments, representative of young stellar object outflows, reveal that stable and narrow collimation of the entire flow can result from the presence of a poloidal magnetic field whose strength is consistent with observations. The laboratory plasma becomes focused with an interior cavity. This gives rise to a standing conical shock from which the jet emerges. Following simulations of the process at the full astrophysical scale, we conclude that it can also explain recently discovered x-ray emission features observed in low-density regions at the base of protostellar jets, such as the well-studied jet HH 154.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2014-10-17 |