Dr
JJ Cherry
(LANL)
05/05/2015, 14:00
Dark Matter (Theory / Experiment)
It has been suggested that the baseline scenario of collisionless cold dark matter over-predicts the numbers of satellite galaxies, as well as the dark matter (DM) densities in galactic centers. This apparent lack of structure at small scales can be accounted for if one postulates neutrino-DM and DM-DM interactions mediated by light O(MeV) force carriers. We consider a simple, consistent...
MacKenzie Warren
(University of Notre Dame)
05/05/2015, 14:23
Dark Matter (Theory / Experiment)
The nature of dark matter and the explosion mechanism of core-collapse supernovae may both be explained by the presence of a sterile neutrino. Observations of galaxies and galaxy clusters are indicative of a $\sim$keV mass sterile neutrino. Oscillations between an electron neutrino and a sterile neutrino in the $\sim$keV mass range may provide an efficient energy transport mechanism between...
Mr
Walter Pettus
(University of Wisconsin - Madison)
05/05/2015, 14:45
Dark Matter (Theory / Experiment)
DM-Ice is a quarter-ton-scale dark matter experiment planned for deployment deep in the ice at the South Pole. This experiment will search for the expected annual modulation signature in the dark matter signal using low-background NaI(Tl) scintillating crystals. Cosmogenic activation of the detectors during transport to and storage at the South Pole (altitude 9,301 feet) has the potential to...
Zachary Pierpoint
(UW-Madison)
05/05/2015, 15:00
Dark Matter (Theory / Experiment)
DM-Ice17, a 17 kg sodium iodide prototype detector for the proposed DM-Ice experiment, was deployed in the Antarctic Ice at the geographic South Pole in December 2010, and has been in operation since January 2011. I will present a stability analysis of three years of data, with a focus on sources of noise and time-dependent effects that could mimic or obfuscate a dark matter modulation. Due to...
Antonia Hubbard
(University of Wisconsin, Madison)
05/05/2015, 15:15
Dark Matter (Theory / Experiment)
DM-Ice is a NaI(Tl) experiment searching for an annually-modulating dark matter signal. The DM-Ice17 detector has successfully operated in the South Pole ice for three years, and R&D efforts for the full-scale detector are underway at FNAL and the Boulby Underground Laboratory. I present an analysis of the muon background in DM-Ice, including long-lived phosphorescence observed in both...
