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On the relation between radial alignment of dark matter subhalos and host mass in cosmological simulations

Published online by Cambridge University Press:  30 May 2009

E. Pécontal ,
T. Buchert ,
Ph. Di Stefano ,
Y. Copin ,
N. Draganova  and
A. Knebe
N. Draganova
Affiliation:
Astrophysical Institute Potsdam, An der Sternwarte 16, Germany
A. Knebe
Affiliation:
Astrophysical Institute Potsdam, An der Sternwarte 16, Germany
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Abstract

We explore the dependence of the radial alignment of subhalos on the mass of the host halo they orbit in. We have 25 well resolved host dark matter halos at our disposal ranging from 1015h-1M๏ down to 1012h-1M๏. We note that the radial alignment is independent of host halo mass and the distribution of cosθ is well fitted by a simple power law P(cosθ) ∝ cos4θ.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 36: Dark Energy and Dark Matter: Observations, Experiments and Theories , 2009 , pp. 147 - 148
Copyright
© EAS, EDP Sciences, 2009

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References

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