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Accretion Effects on Disks Around Non-Magnetic Compact Objects

Published online by Cambridge University Press:  21 February 2013

Michele M. Montgomery*
Affiliation:
University of Central Florida, Department of Physics, 4000 University Blvd., Orlando, FL, USA email: montgomery@physics.ucf.edu
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Abstract

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Accretion disks in compact binaries are thought to sometimes tilt and precess in the retrograde direction as indicated by modulations in light curves and/or signals. Using 3D Smoothed Particle Hydrodynamics and a low mass transfer rate, Montgomery (2012) shows the disk in non-magnetic Cataclysmic Variables tilts naturally after enough time has passed. In that work, twice the fundamental negative superhump signal 2ν_ is associated with disk tilt around the line of nodes, gas stream overflow approximately twice per orbital period, and retrograde precession. In this work, we show that after enough additional time has passed in the same simulation, the 4ν_ harmonic appears. The decrease in the 2ν_ amplitude approximately equals the amplitude of the 4ν_ harmonic. We discuss the implications.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2013

References

Gao, W., Li, Z., Wu, X., Zhang, Z., & Li, Y. 1999, ApJL, 527, L55CrossRefGoogle Scholar
Montgomery, M. M. 2009a, APJ, 705, 603Google Scholar
Montgomery, M. M. 2009b, MNRAS, 394, 1897Google Scholar
Montgomery, M. M. 2012, APJL, 745, L25CrossRefGoogle Scholar
Ohshima, T., et al. 2012, PASJ, 64, L3CrossRefGoogle Scholar
Pavlenko, E., et al. 2010, in: Werner, K. & Rauch, T. (eds.), AIP Conference Series 1273, p. 320Google Scholar
Patterson, J., Jablonski, F., Koen, C., O'Donoghue, D., & Skillman, D. R. 1995, PASP, 107, 1183Google Scholar
Whitehurst, R. 1988, MNRAS, 232, 35CrossRefGoogle Scholar