Some Consequences of Magnetic Fields in High Energy Sources

Details Some Consequences of Magnetic Fields in High Energy Sources Some Consequences of Magnetic Fields in High Energy Sources

2000-08-25

arxiv.org/abs/astro-ph/0008397v1

Astronomy and Astrophysics

Astrophysics

12 pages, Latex, to Appear in " Proceedings of The First KIAS Astrophysics Workshop, "Explosive Phenomena in Astrophysical Com

Scientific paper

10.1063/1.1368267

Magnetic fields likely play a fundamental intermediary role between gravity and radiation in many astrophysical rotators. They can, among other things, 1) induce and be amplified by turbulence, 2) energize coronae, 3) launch and collimate outflows in ``spring'' or ``fling'' mechanisms. The first is widely recognized to be important for angular momentum transport, but can also produce intrinsic variability and possibly vorticity growth. The second leads to the production of high energy flares, and also facilitates a test of general relativity from AGN observations. The third can operate from rotators with a large scale fields, though the origin of the requisite large scale fields is somewhat unresolved. I discuss these three points in more detail below, emphasizing some open questions.

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