Laboratory formation of a scaled protostellar jet by coaligned poloidal magnetic field

被引：191

作者：

Albertazzi, B. ^{[1
,2
,21
]}

Ciardi, A. ^{[3
,4
,5
]}

Nakatsutsumi, M. ^{[1
]}

Vinci, T. ^{[1
]}

Beard, J. ^{[6
]}

Bonito, R. ^{[7
,8
]}

Billette, J. ^{[6
]}

Borghesi, M. ^{[9
,10
]}

Burkley, Z. ^{[1
]}

Chen, S. N. ^{[1
]}

Cowan, T. E. ^{[11
,12
]}

Herrmannsdoerfer, T. ^{[12
]}

Higginson, D. P. ^{[1
]}

Kroll, F. ^{[11
,12
]}

Pikuz, S. A. ^{[13
,14
]}

Naughton, K. ^{[9
]}

Romagnani, L. ^{[1
]}

Riconda, C. ^{[15
]}

Revet, G. ^{[1
]}

Riquier, R. ^{[1
,16
]}

Schlenvoigt, H. -P. ^{[12
]}

Skobelev, I. Yu. ^{[13
]}

Faenov, A. Ya. ^{[13
,17
]}

Soloviev, A. ^{[18
]}

Huarte-Espinosa, M. ^{[19
,20
]}

Frank, A. ^{[19
]}

Portugall, O. ^{[6
]}

Pepin, H. ^{[2
]}

Fuchs, J. ^{[1
,18
]}

机构：

[1] Univ Paris 06, LULI, Ecole Polytech, CNRS,Commissariat Enervie Atom & Energies Alterna, F-91128 Palaiseau, France

[2] INRS EMT, Varennes, PQ, Canada

[3] Univ Paris 06, Sorbonne Univ, UMR 8112, LERMA, F-75005 Paris, France

[4] Observ Paris, F-75014 Paris, France

[5] CNRS, UMR 8112, LERMA, Paris, France

[6] CNRS Univ Joseph Fourier UJF Univ Paul Sabatier U, UPR 3228, LNCMI, F-31400 Toulouse, France

[7] Univ Palermo, Dipartimento Fis & Chim, I-90134 Palermo, Italy

[8] Osserv Astron Palermo, Natl Inst Astrophys INAF, I-90134 Palermo, Italy

[9] Queens Univ Belfast, Sch Math & Phys, Belfast BT7 1NN, Antrim, North Ireland

[10] Acad Sci Czech Republ, Inst Phys, Extreme Light Infrastruct ELI Beamlines Project, Prague 18221, Czech Republic

[11] Tech Univ Dresden, D-01062 Dresden, Germany

[12] Helmholtz Zentrum Dresden Rossendorf, D-01328 Dresden, Germany

[13] Russian Acad Sci, Joint Inst High Temp, Moscow 125412, Russia

[14] Natl Res Nucl Univ MEPhl, Moscow 115409, Russia

[15] Univ Paris 06, UMR 7605, Sorbonne Univ, LULL, F-75005 Paris, France

[16] CEA Bruyeres le Chatel, F-91297 Arpajon, France

[17] Osaka Univ, Inst Acad Initiat, Suita, Osaka 5650871, Japan

[18] Inst Appl Phys, Nlizhny Novgorod 603950, Russia

[19] Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA

[20] Univ Houston, Ctr Adv Comp & Data Syst, Houston, TX 77204 USA

[21] Osaka Univ, Grad Sch Engn, Suita, Osaka 5650871, Japan

来源：

SCIENCE | 2014年 / 346卷 / 6207期

基金：

美国国家科学基金会; 加拿大自然科学与工程研究理事会; 英国工程与自然科学研究理事会;

关键词：

ACCRETION DISCS; DRIVEN JETS; DG-TAURI; SIMULATIONS; COLLIMATION; DISCOVERY; PLASMAS;

D O I：

10.1126/science.1259694

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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.

引用

页码：325 / 328

页数：4

共 27 条

[1] Subarcsecond high-sensitivity measurements of the DG Tau jet with e-MERLIN [J].