1 code implementation • 28 Jan 2013 • Kyle A. Oman, Michael J. Hudson, Peter S. Behroozi
We parameterize the orbital history by the time since crossing within 2. 5 rvir of the cluster centre and use our catalog to estimate the probability density over a range of this parameter given a set of present-day projected (i. e. observable) phase space coordinates.
Cosmology and Nongalactic Astrophysics
4 code implementations • 19 Oct 2011 • Peter S. Behroozi, Risa H. Wechsler, Hao-Yi Wu
We present a new algorithm for identifying dark matter halos, substructure, and tidal features.
Cosmology and Nongalactic Astrophysics Instrumentation and Methods for Astrophysics
2 code implementations • 19 Oct 2011 • Peter S. Behroozi, Risa H. Wechsler, Hao-Yi Wu, Michael T. Busha, Anatoly A. Klypin, Joel R. Primack
We find that both the ROCKSTAR and BDM halo finders track halos extremely well; in both, the number of halos which do not have physically consistent progenitors is at the 1-2% level across all halo masses.
Cosmology and Nongalactic Astrophysics Instrumentation and Methods for Astrophysics
