Calendar
2011
September-December
Mon, Dec 5 |
TCC Presentation / Theoretical Astrophysics Seminar Hydrogen and Helium Reionization [abstract] |
Fri, Dec 2 |
Special Astronomy/Physics Joint Colloquium Cosmic Information: IT from BIT, from BITs in IT [abstract] J. Richard Bond, Canadian Institute for Theoretical Astrophysics (CITA) |
Wed, Nov 30 |
TCC Presentation / Cosmos Seminar Giant Gamma-ray Bubbles in the Inner Galaxy: AGN Activity or Bipolar Galactic Wind? [abstract] |
Mon, Nov 21 |
PhD Defense Presentation / Theoretical Astrophysics Seminar Toward an Understanding of the Large Scale Structure of the Universe with Galaxy Surveys [abstract] |
Mon, Nov 14 |
TCC Presentation / Theoretical Astrophysics Seminar The Plasma Physics and Cosmological Implications of TeV Blazars [abstract] Philip Chang, University of Wisconsin, Milwaukee (formerly of CITA-ICAT) |
Wed, Nov 9 |
TCC Presentation / Cosmos Seminar Cosmology without Cosmic Variance [abstract] |
Wed, Nov 2 |
TCC Presentation / Cosmos Seminar The Mass Assembly History of Black Holes in the Universe [abstract] |
Wed, Oct 26 |
TCC Presentation / Cosmos Seminar New Results from the South Pole Telescope [abstract] |
Mon, Oct 24 |
TCC Presentation / Theoretical Astrophysics Seminar From OWLS to FiBY: Numerical Simulations of Galaxy Formation and Evolution [abstract] Claudio Dalla Vecchia, Max Planck Institute for Extraterrestrial Physics |
Mon, Oct 17 |
TCC Presentation / Theoretical Astrophysics Seminar Lyman-alpha in Three Dimensions [abstract] |
Thurs, Sep 29 |
TCC Presentation / Extragalactic Seminar Galaxy Mergers through Cosmic Time [abstract] |
Thurs, Sep 8 |
TCC Presentation / Extragalactic Seminar Galaxy Formation and Evolution through Metals [abstract] |
January-May
Mon, May 23 |
TCC Presentation / Special Seminar Galaxy-Galaxy Weak Lensing as a Tool to Correct Finger-of-God Effects in Redshift Power Spectrum Measurements [abstract] |
Thurs, May 12 |
TCC Presentation / Special Seminar Host vs. Subhalo-2D Density Profile Measured from Galaxy-Galaxy Lensing [abstract] |
Fri, May 6 |
TCC Presentation / Special Seminar Velocity Probe on Cosmology [abstract] |
Thurs, May 5 |
TCC Presentation / Extragalactic Seminar The Dark Matter Halo - Galaxy Connection in the Local Universe and Local Group [abstract] |
Thurs, Apr 28 |
TCC Presentation / Extragalactic Seminar Understanding the Global Course of Galaxy Evolution at z < 1 [abstract] |
Fri, Apr 22 |
TCC Presentation / Special Seminar Obscured Quasars at High Redshift [abstract] |
Tue, Apr 12 |
TCC Presentation / Weinberg Theory Seminar Screening Dark Energy [abstract] |
Wed, Mar 30 |
TCC Presentation / Cosmos Seminar The Influence of Structure Formation on the Interpretation of Dark Matter Experiments [abstract] |
Tues, Mar 8 |
TCC Presentation / Astronomy Colloquium DEEP2 and Beyond: Studying Galaxy Evolution and Large-Scale Structure with Deep Surveys [abstract] |
Tue, Feb 15 |
TCC Presentation / Astronomy Colloquium Is Inhomogeneity Important in Cosmology? [abstract] The real universe is comprised of a cosmic web of structures, with
vast walls and voids on larger scales and mostly empty space on smaller
scales. Is this significant for cosmology, or can we ignore it and used
the standard linearized Robertson-Walker models with impunity? There
are three ways inhomogeneities can affect the values we assign
cosmological parameters on the basis of astronomical observations.
Firstly there may be back-reaction from small scale inhomogeneities
to large scale dynamics; this almost certainly occurs, but is probably
not important, although there are some caveats to that statement.
Secondly the observational properties of a universe with major voids
can be significantly different from those of a smoothed out model:
this has the potential to cause significant re-evaluation of the
interpretation of the supernova observations. Thirdly a large-scale
underdensity, with our Galaxy somewhere near the centre, can mimic
the apparent acceleration of the universe, indeed the observations
can be explained by inhomogeneous models with no dark energy present.
These models are philosophically unpopular, but philosophy will have
to give way to observational tests that can check whether the
Copernican Principle is indeed satisfied or not. Recent claims that
these models have been observationally disproved are overstated:
the required perturbation calculation have not yet been properly
deployed. |
Wed, Feb 9 |
TCC Presentation / Cosmos Seminar High Resolution Imaging of the Sunyaev-Zel'dovich Effect in Galaxy Clusters [abstract] |
Wed, Feb 9 |
TCC Presentation / Stellar Seminar Observational Constraints on Dark Matter Heating in White Dwarf Stars [abstract] |
Mon, Jan 31 |
TCC Special Colloquium / Theoretical Astrophysics Seminar Dark Matter [abstract] |
Wed, Jan 26 |
TCC Presentation The Matching of the Cosmic Star Formation Rate and the Cosmic Supernova Rate [abstract] |
Wed, Jan 19 |
TCC / Cosmos Seminar Cosmological Imprints of f(R) Gravity [abstract] |
Tue, Jan 18 |
TCC / Colloquium (Tinsley Scholar) Dust in the Early Universe [abstract] |