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Effect of LMC on the Galactic Warp

Published online by Cambridge University Press:  26 May 2016

Toshio Tsuchiya
Toshio Tsuchiya*
Affiliation:
Astronomisches Rechen-Institut, Mönchhofstraße 12-14, 69120 Heidelberg, Germany

Abstract

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Multi-scale interaction between LMC, the Galactic halo, and the disk is examined by N-body simulations. The Galactic models are constructed most realistically to satisfy available observational constraints. LMC is orbiting in a ellipse with pericentric radius of 50kpc, and the Galactic halo is assumed to be well beyond the orbit. By using hybrid algorithm I have succeeded to follow the evolution with million particles. The orbiting satellite excites density enhancement as a wake, and the wake exerts a tidal force on the disk. Through this multi-scale interaction, an integral warp is excited. Its amplitude is, however, a few 100pc, and impossible to explain the observed Galactic warp.

Type
Posters
Information
Symposium - International Astronomical Union , Volume 208: Astrophysical Supercomputing using Particle Simulations , 2003 , pp. 457 - 458
Copyright
Copyright © Astronomical Society of the Pacific 2003 

References

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