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- W1707125788 abstract "Using smoothed particle hydrodynamics, we numerically simulate steady-state accretion discs for cataclysmic variable dwarf novae systems that have a secondary-to-primary mass ratio 0.35 ≤q≤ 0.55. After these accretion discs have come to quasi-equilibrium, we rotate each disc out of the orbital plane by δ= (1, 2, 3, 4, 5 or 20)° to induce negative superhumps. For accretion discs tilted 5°, we generate light curves and associated Fourier transforms for an atlas on negative superhumps and retrograde precession. Our simulation results suggest that accretion discs need to be tilted more than 3° for negative superhumps to be statistically significant. We also show that if the disc is tilted enough such that the gas stream strikes a disc face, then a dense cooling ring is generated near the radius of impact. In addition to the atlas, we study these artificially tilted accretion discs to find the source to negative superhumps. Our results suggest that the source is additional light from innermost disc annuli, and this additional light waxes and wanes with the amount of gas stream overflow received as the secondary orbits. The nodes, where the gas stream transitions from flowing over to under the disc rim (and vice versa), precess in the retrograde direction." @default.
- W1707125788 created "2016-06-24" @default.
- W1707125788 creator A5009594222 @default.
- W1707125788 date "2009-04-21" @default.
- W1707125788 modified "2023-10-06" @default.
- W1707125788 title "Atlas of tilted accretion discs and source to negative superhumps" @default.
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- W1707125788 doi "https://doi.org/10.1111/j.1365-2966.2009.14487.x" @default.
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