Chin. Phys. Lett.  2001, Vol. 18 Issue (4): 619-621    DOI:
Original Articles |
On the Stability of a Magnetized Disk with a Massive Corotating Halo
CHOU Chih-Kang1;PENG Qiu-He1,2
1Institute of Astronomy and Department of Physics, National Central University, Chung-Li, Taiwan 32054 2Department of Astronomy, Nanjing University, Nanjing 210093
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CHOU Chih-Kang, PENG Qiu-He 2001 Chin. Phys. Lett. 18 619-621
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Abstract Effects of magnetic fields on the stability of a differentially rotating disk are considered in the shearing sheet approximation. An explicit stability criterion is derived in terms of Toomre's Q value and the field strength. The combined effects of both magnetic fields and a corotating dark matter halo are briefly discussed.

Keywords: 98.62.Gq      98.62.Hr      98.35.Gi      95.35.+d     
Published: 01 April 2001
PACS:  98.62.Gq (Galactic halos)  
  98.62.Hr (Spiral arms and bars; galactic disks)  
  98.35.Gi (Galactic halo)  
  95.35.+d (Dark matter)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2001/V18/I4/0619
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