Laboratory simulations of astrophysical jets

被引：0

作者：

Lebedev, Sergey V. ^{[1
]}

Suzuki-Vidal, Francisco ^{[1
]}

Ciardi, Andrea

Bocchi, Matteo ^{[1
]}

Bland, Simon N. ^{[1
]}

Burdiak, Guy ^{[1
]}

Chittenden, Jerry P. ^{[1
]}

de Grouchy, Phil ^{[1
]}

Hall, Gareth N. ^{[1
]}

Harvey-Thompson, Adam ^{[1
]}

Marocchino, Alberto ^{[1
]}

Swalding, George ^{[1
]}

Frank, Adam

Blackman, Eric G.

Camenzind, Max

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2BW, England

来源：

ADVANCES IN PLASMA ASTROPHYSICS | 2011年 / 274期

关键词：

ISM: jets and outflows; hydrodynamics; plasmas; methods: laboratory; YOUNG STELLAR OBJECTS; ACCRETION DISCS; MECHANISM; OUTFLOWS; FLOWS;

D O I：

10.1017/S1743921311006521

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Collimated outflows (jets) are ubiquitous in the universe, appearing around sources as diverse as protostars and extragalactic supermassive black holes. Jets are thought to be magnetically collimated, and launched from a magnetized accretion disk surrounding a compact gravitating object. We have developed the first laboratory experiment to address time-dependent, episodic phenomena relevant to the poorly understood jet acceleration and collimation region (Ciardi at al., 2009). The experiments were performed on the MAGPIE pulsed power facility (1.5 MA, 250 as) at Imperial College. The experimental results show the periodic ejections of magnetic bubbles naturally evolving into a heterogeneous jet propagating inside a channel made of self-collimated magnetic cavities. The results provide a unique view of the possible transition from a relatively steady-state jet launching to the observed highly structured outflows.

引用

页码：26 / 35

页数：10

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