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PERIMETER INSTITUTE RECORDED SEMINAR ARCHIVE

PIRSA:C11028 - Unravelling Dark Matter Conference - 2011PODCAST Subscribe to podcast

Unravelling Dark Matter Conference

Organizer(s):

Collection URL: http://pirsa.org/C11028

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A Tour of the Direct Detection Landscape
Speaker(s): Neal Weiner
Abstract: A wide range of results have led to a confusing situation in the area of direct WIMP detection. I'll review the status of these results. The features of the results imply that almost any explanation will require a departure from standard assumptions (Maxwellian halo, elastic WIMP scattering or other... read more
Date: 22/09/2011 - 9:00 am

Dark Matter Annihilation: From High Redshift to the Galactic Center
Speaker(s): Douglas Finkbeiner
Abstract: The existence of dark matter is hardly in doubt, yet astrophysicists continue to search in vain for any non-gravitational signals of it. In the case of weakly interacting massive particle (WIMP) models, ongoing annihilation or decay of WIMPs to Standard Model particles could provide observable signa... read more
Date: 22/09/2011 - 9:40 am

Wandering in the Dark
Speaker(s): Kris Sigurdson
Abstract: TBA
Date: 22/09/2011 - 10:20 am

Dark Matter Halos in 6D
Speaker(s): Lawrence Widrow
Abstract: I will describe various efforts to understand the phase space structure of dark matter halos. Implications for dark matter detection experiments will also be discussed.
Date: 22/09/2011 - 11:20 am

Our Self-Annihilating Neighbours
Speaker(s): James Taylor
Abstract: One of the most exciting, albeit slightly speculative, components of the Fermi mission is to search for evidence of energetic events related to dark matter decay or annihilation. The best targets for this search a regions where we suspect there is dark matter, but see few conventional gamma-ray sour... read more
Date: 22/09/2011 - 12:00 pm

Constraints on Dark Matter Models from a Fermi-LAT Search for Cosmic-Ray Electrons from the Sun
Abstract: No known astrophysical mechanisms are expected to generate a significant high-energy flux of cosmic-ray electrons and positrons (CREs) from the Sun. However, some recently considered classes of dark matter models predict such a signal. We analyzed the CRE events collected by the Fermi-LAT during its... read more
Date: 22/09/2011 - 2:00 pm

Astrophysical Constraints on Dark Matter Annihilation with Sommerfeld Enhancement
Abstract: Dark matter models with an annihilation cross section enhanced by a Sommerfeld mechanism have been proposed in the past years to explain a number of observed anomalies, such as the excess of high energy positrons in cosmic rays reported by PAMELA. However, this enhancement can not be arbitrarily lar... read more
Date: 22/09/2011 - 2:40 pm

Substructure, Sommerfeld, and CR Signals
Speaker(s): Tracy Slatyer  
Abstract: Models of dark matter with Sommerfeld-enhanced annihilation have been proposed to explain the CR excess observed by the PAMELA and Fermi experiments. In such models, the local annihilation signal can easily be dominated by small, dense, cold subhalos, instead of by the smooth DM halo as usually assu... read more
Date: 22/09/2011 - 3:40 pm

What Dark Matter Microhalos Can Tell us About Reheating
Speaker(s): Adrienne Erickcek
Abstract: The expansion history of the Universe before big bang nucleosynthesis is unknown; in many models, the Universe was effectively matter-dominated between the end of inflation and the onset of radiation domination. I will show how an early matter-dominated era leaves an imprint on the small-scale matte... read more
Date: 22/09/2011 - 4:20 pm

Revealing the Invisible: Strong Gravitational Lensing & Particle Dark Matter
Speaker(s): Leonidas Moustakas
Abstract: The particular properties of different dark matter particle candidates can lead to different properties and distributions of sub-structure within galaxies; structure that may uniquely be probed through specific state of the art observations of galaxy-scale dark matter halos that happen to be acting ... read more
Date: 22/09/2011 - 5:00 pm

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