Title

Accretion Effects On Disks Around Non-Magnetic Compact Objects

Keywords

accretion; accretion disks; binaries: close; cataclysmic variables; hydrodynamics; instabilities; methods: numerical; novae

Abstract

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. © International Astronomical Union 2013.

Publication Date

8-1-2012

Publication Title

Proceedings of the International Astronomical Union

Volume

8

Issue

S290

Number of Pages

279-280

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1017/S1743921312020005

Socpus ID

84874419708 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84874419708

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