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2011 Spring Symposium Webcasts
Monday May 2, 2011
2011 Spring Symposium
Matt Mountain (Space Telescope Science Institute)
Introduction and opening remarks by Dr. Matt Mountain, director of the Space Telescope Science Institute.
2011 Spring Symposium
Virginia Trimble (University of California, Irvine)
Both the concept and the name dark matter are older than you probably think. The talk will begin in the middle, with a data summary that could have been assembled in 1939, but in fact was not until 1974. I will then attempt to identify some of the ve ...
2011 Spring Symposium
Erwin de Blok (University of Cape Town)
The distribution of dark matter in galaxies has been the topic of some debate over the last couple of years. Recent, new observations of the gas kinematics of nearby galaxies as well as high-resolution simulations have enabled us to better constrain ...
2011 Spring Symposium
Licia Verde (ICREA & Institut de Ciencies del Cosmos (ICC-UB-IEEC))
Cosmic Microwave Background (CMB) observations have been fundamental in defining the "standard cosmological model". This model has been so far very succesful in describing, with only few parameters, observations of the Universe from redshift sim 1100 ...
2011 Spring Symposium
Beth Reid (Lawrence Berkeley National Laboratory)
The consistency between fluctuations measured in the Cosmic Microwave Background and in the matter density field at low redshift (including the Baryon Acoustic Oscillations) provides a stringent test of the standard cosmological model: dark matter an ...
2011 Spring Symposium
Pierluigi Belli (INFN - Roma Tor Vergata)
The DAMA/LIBRA set-up (about 250 kg highly radiopure NaI(Tl)) is running at the Gran Sasso National Laboratory of the INFN. The results obtained by exploiting the model independent annual modulation signature for the presence of Dark Matter (DM) part ...
2011 Spring Symposium
Elena Aprile (Columbia University)
The XENON100 experiment is designed to search for interactions of dark matter Weakly Interacting Massive Particles (WIMPs) in a liquid xenon time projection chamber. Featuring a large target mass and an extremely low background, XENON100 is the most ...
2011 Spring Symposium
Albert de Roeck (CERN)
In March 2010 the Large Hadron Collider (LHC) delivered the first proton-proton collisions at a center of mass energy of 7 TeV. The experiments at the LHC, in particular ALICE, ATLAS, CMS and LHCb recorded the data and had a first glimpse of the high ...
2011 Spring Symposium
Neill Weiner (New York University)
A wide range of results (DAMA, CoGeNT and CRESST, most notably) have found event rates in suggestive of WIMPs. The null results from other experiments challenge these results. I will explore what the existing theoretical options are to explain these ...
2011 Spring Symposium
Eric Huff (UC Berkeley)
Weak gravitational lensing has attracted a great deal of interest in recent years as a powerful measurement technique capable of probing the invisible components of the concordance cosmology. To date, most of the information available from weak lensi ...
Tuesday May 3, 2011
2011 Spring Symposium
Joachim Wambsganss (Universität Heidelberg)
Gravitational microlensing - the deflection of light by compact objects of roughly stellar mass - comes in two flavors: Quasar microlensing deals with the action of compact objects in the (halo of the) lensing galaxy on a multiply imaged background q ...
2011 Spring Symposium
Bhuvnesh Jain (University of Pennsylvania)
Weak lensing probes of dark matter and gravity come from measurements of galaxy-galaxy lensing and mass maps of galaxy clusters. I will summarize current measurements and upcoming lensing surveys. A new arena for lensing and other probes is tests of ...
2011 Spring Symposium
Tommaso Treu (University of California, Santa Barbara)
According to the standard cosmological model, cold dark matter dominates the dynamics of structure. However, it is unclear whether the model can reproduce the properties of galaxies and clusters at smaller scales. Strong lensing is an extremely preci ...
2011 Spring Symposium
Ofer Lahav (University College London)
The talk will cover 3 topics: (i) New results from the HST CLASH survey on the nature of Dark Matter in galaxy clusters (ii) Constraints on neutrino mass from Cosmology (iii) The prospects to constrain Dark Matter and Dark Energy from mulit-probes in ...
2011 Spring Symposium
Keith Olive (University of Minnesota)
An overview of the standard model of big bang nucleosynthesis (BBN) in the post-WMAP era is presented. With the value of the baryon-to-photon ratio determine to relatively high precision by WMAP, standard BBN no longer has any free parameters. In thi ...
2011 Spring Symposium
Doug Finkbeiner (Harvard University)
Sommerfeld-enchanced WIMP models can produce sufficient annihilation power around z=600 to change the recombination history of the Universe. Current and upcoming CMB experiments are sensitive to interesting regions of parameter space. I will present ...
2011 Spring Symposium
James Bullock (University of California, Irvine)
Over the past 5-10 years, surveys of the local group have discovered many new dwarf galaxies and shown that the outer halos of the Milky Way and M31 are filled with streams of stars, the residue of hierarchical assembly. Qualitatively, these results ...
2011 Spring Symposium
Simon White (MPA Garching)
At the time of recombination, 400,000 years after the Big Bang, the structure of the dark matter distribution was extremely simple and can be inferred directly from observations of structure in the cosmic microwave background. At this time dark matte ...
Wednesday May 4, 2011
2011 Spring Symposium
Leonidas Moustakas (Jet Propulsion Laboratory, California Institute of Technology)
Under all viable dark matter particle candidates, we predict there to be sub-structure within all galaxies. These sub-structures will follow spatial and mass-function distributions that depend on the matter power spectrum and the effects of non-linea ...
2011 Spring Symposium
Priya Natarajan (Yale University)
Exploiting strong and weak gravitational lensing has proved to be very profitable to understand the detailed distribution of dark matter in clusters of galaxies. I will present the results to date of the comparison of these lensing derived high resol ...
2011 Spring Symposium
Alexie Leauthaud (Lawrence Berkeley National Laboratory)
I will present a new theoretical framework that combines measurements of galaxy-galaxy lensing, galaxy clustering, and the galaxy stellar mass function in a self-consistent manner. While considerable effort has been invested in exploring each of thes ...
2011 Spring Symposium
Constantinos Skordis (Perimeter Institute)
The General Theory of Relativity (GR) is an astounding accomplishment: together with quantum field theory, it is now widely considered to be one of the two pillars of modern physics. The great success of GR, however, has not stopped alternatives bein ...
2011 Spring Symposium
Megan Donahue (Michigan State University)
We can estimate the total mass of clusters of galaxies in at least four ways: galaxy velocity dispersions, gravitational lensing, X-ray observations, and Sunyaev-Zeldovich observations. These methods measure different aspects of the matter, and have ...
2011 Spring Symposium
Robert Johnson (University of California, Santa Cruz)
The Fermi Gamma-ray Space Telescope is a mission in low-Earth orbit to observe gamma rays from the cosmos in the broad energy range from 20 MeV to >300 GeV, with supporting observations of gamma-ray bursts from 8 keV to 30 MeV. The telescope far surp ...
2011 Spring Symposium
Sandra Faber, Joe Silk, Bob Sanders, Peter Graham (TBD)
No description found.
Thursday May 5, 2011
2011 Spring Symposium
Risa Wechsler (Stanford University)
Dark matter provides the seeds of structure upon which galaxies form. I will review the basics of the formation of dark matter halos, informed by new results based on high-resolution cosmological simulations and gravitationally-consistent merger tree ...
2011 Spring Symposium
Matthew Walker (Harvard-Smithsonian Center for Astrophysics)
The Milky Way's dwarf spheroidal (dSph) satellites have the smallest baryonic masses and largest mass-to-light ratios of any observed galaxies, and therefore provide perhaps the most straightforward available comparison to cold dark matter halos prod ...
2011 Spring Symposium
Juan Collar (University of Chicago)
COUPP employs bubble chambers to look for medium to heavy mass Weakly Interacting Massive Particles (WIMPs). This technique offers the best intrinsic rejection against minimum ionizing backgrounds available to any dark matter detector. Very recently, ...
2011 Spring Symposium
Ray Villard, Megan Donahue, Risa Wechsler, Juan Collar, Albert de Roeck, Mario Livio (STScI, Michigan State U, Stanford U, U of Chicago, CERN, STScI)
SCIENCE WRITERS WORKSHOP - ‘DARK MATTER’ - "Welcome and Introductions" - Ray Villard Space Telescope Science Institute “Constraints on Dark Matter from X-ray Observations” - Megan Donahue (Michigan State University) “Dark Matter Properties ...