期刊
ASTROPHYSICAL JOURNAL
卷 601, 期 1, 页码 311-318出版社
IOP Publishing Ltd
DOI: 10.1086/380562
关键词
binaries : general; dark matter; Galaxy : halo; methods : numerical; stars : kinematics; stars : statistics
We simulate the evolution of halo wide binaries in the presence of the massive compact halo objects (MACHOs) and compare our results to the sample of wide binaries in a companion paper. The observed distribution is well fitted by a single power law for angular separations, 3.5 < Delta theta < 900, whereas the simulated distributions show a break in the power law whose location depends on the MACHO mass and density. This allows us to place upper limits on the density of MACHOs as a function of their assumed mass. At the 95% confidence level, we exclude MACHOs with masses M > 43 M-circle dot at the standard local halo density rho(H). This all but removes the last permitted window for a full MACHO halo for masses M > 10(-7.5) M-circle dot.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据