科研之友
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摘要
The maser disk around the massive black hole (MBH) in active galaxy NGC 4258 exhibits an O(10 degrees) warp on the O(0.1 pc) scale. The physics driving the warp is still debated. Suggested mechanisms include torquing by relativistic frame dragging or by radiation pressure. We propose here a new warping mechanism: resonant torquing of the disk by stars in the dense cusp around the MBH. We show that resonant torquing can induce such a warp over a wide range of observed and deduced physical parameters of the maser disk.
- 出版日期2009-8-1
