  We study the distribution of intragroup dark matter in small groups of dark
matter halos of galaxy-like size in a LCDM cosmology. These groups are
identified using a physical criterion and may be an appropriate representation
of small galaxy groups. We quantify the amount of intragroup dark matter and
characterize its distribution. We find that compact associations of halos, as
well as those intermediate and loose groups, have rather flat intragroup dark
matter profiles with logarithmic slopes of gamma ~0 and ~-0.2$, respectively.
Hence, the intragroup dark matter of these halo systems does not follow the
same cuspy tendency that halos of galaxies have. In intermediate and loose
galaxy-size halo associations the intragroup matter tends to be <50% that of
the total mass of the group, and in compact associations is <20% within their
group radius.

Cosmology and Nongalactic Astrophysics