T hree years and a 12-place ju m p in the polls a p p a re n tly m ake a difference of $55 for Notre Dame students hoping to t r a v e l to th e NCAA h o c k e y regionals beginning tonight in Grand Rapids, Mich. S en io r Jo h n n y M cD erm ott has fond memories of traveling in 2004 to then-No. 13 Notre D am e’s only previous gam e in the NCAA hockey tournam ent. He got a bus trip, a box lunc...

Microlensing searches aim to detect compact halo dark matter via its gravitational lensing effect on stars within the Large Magellanic Cloud. The most recent results have led to the claim that a significant fraction of the galactic halo dark matter may be in the form of compact, solar-mass objects. We analyze this hypothesis by considering the goodness-of-fit of the best-fit halo dark matter so...

Why do galactic bars rotate with high pattern speeds, when dynamical friction should rapidly couple the bar to the massive, slowly rotating dark halo? This longstanding paradox may be resolved by considering the dynamical interactions between the galactic disc and structures in the dark halo. Dynamical friction between small-scale halo structure and the disc spins up and flattens the inner halo...

: This is a case report of intra cranial penetration by halo pins resulting in cerebritis and fits secondary to incorrect halo care by the patient and his family. Halo pin penetration into the skull with brain injury is itself a rare incident. Previously documented case reports were in patients with a previous cranioplasties and they were highlight the fact that halo not to be used in craniopla...

We investigate the hypothesis that some fraction of the globular clusters presently observed in the Galactic halo formed in external dwarf galaxies. This is done by means of a detailed comparison between the “old halo”, “young halo,” and “bulge/disk” sub-systems defined by Zinn (1993a) and the globular clusters in the LMC, SMC, and Fornax and Sagittarius dwarf spheroidal galaxies. We first use ...

Large-scale sky surveys require companion large volume simulated mock catalogs. To ensure precision cosmology studies are unbiased, the correlations in these mocks between galaxy properties and their large-scale environments must be realistic. Since galaxies embedded dark matter halos, an important first step is to include such -- sometimes called assembly bias for halos. However, correlate wit...

This paper addresses available constraints on mass models fitted to rotation curves. Mass models of disk galaxies have well-known degeneracies, that prevent a unique mass decomposition. The most notable is due to the unknown value of the stellar mass-to-light ratio (the disk-halo degeneracy); even with this known, degeneracies between the halo parameters themselves may prevent an unambiguous de...

We examine the bar instability in galactic models with an exponential disk and a cuspy dark matter (DM) halo with a Navarro-Frenk-White (NFW) cosmological density profile. The equilibrium models are constructed from a 3-integral composite distribution function but subject to the bar instability. We generate a sequence of models with a range of mass resolution from 1.8K to 18M particles in the d...

OBJECTIVE To observe the incidence of reversed halo sign in different pulmonary diseases and the pathological correspondence of reversed halo sign. METHODS Retrospectively studied the high resolution computer tomography scans of all the patients who were admitted in our department with abnormal pulmonary imaging, from 1st of January 2011 to 31st of December 2013, and all the cases with revers...