EPISODIC MAGNETIC BUBBLES AND JETS: ASTROPHYSICAL IMPLICATIONS FROM LABORATORY EXPERIMENTS
EPISODIC MAGNETIC BUBBLES AND JETS: ASTROPHYSICAL IMPLICATIONS FROM LABORATORY EXPERIMENTS
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DOI：
10.1088/0004-637x/691/2/l147
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发表时间：
2008-11
期刊：
影响因子：
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通讯作者：
Andrea Ciardi;S. Lebedev;A. Frank;F. Suzuki-Vidal;G. Hall;S. Bland;A. Harvey-Thompson;E. Blackman;M. M. L. D. Paris-M.;Lerma;France Imperial College;B. Laboratory;U. Rochester;D. Physics;Astronomy;Usa University of Heidelberg;Centre for Astronomy Heidelberg;Germany. Present address Ecole Normale Superieure;Laboratoire de Radioastronomie;France.
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作者：
Andrea Ciardi;S. Lebedev;A. Frank;F. Suzuki-Vidal;G. Hall;S. Bland;A. Harvey-Thompson;E. Blackman;M. M. L. D. Paris-M.;Lerma;France Imperial College;B. Laboratory;U. Rochester;D. Physics;Astronomy;Usa University of Heidelberg;Centre for Astronomy Heidelberg;Germany. Present address Ecole Normale Superieure;Laboratoire de Radioastronomie;France.
准直外流（喷流）在宇宙中无处不在，出现在原恒星和河外超大质量黑洞等各种来源周围。喷流被认为是磁准直的，并从围绕着一个紧凑的引力物体的磁化吸积盘发射。我们已经开发了第一个实验室实验，以解决时间依赖性，情节相关的知之甚少的射流加速和准直区域的现象。实验结果表明，磁泡的周期性喷射在自准直磁腔通道中自然演化为非均匀射流。结果提供了一个独特的观点可能从一个相对稳定的状态喷气发射到观察到的高度结构化的外流的过渡。
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 experiments to address time-dependent, episodic phenomena relevant to the poorly understood jet acceleration and collimation region. 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.