Past Events

  • Dissertation Defense: "Neutron Multiplicity in Atmospheric Neutrino Events at the Sudbury Neutrino Observatory"

    David Rittenhouse Laboratory 4E9

    Richie Bonventre

  • Center for Particle Cosmology Astro Seminar: "Stalking Dark Energy and the Mystery of the Accelerating Universe"

    University of Pennsylvania Chemistry Building Room 102

    Professor Saul Perlmutter, Lawrence Berkely National Lab, Berkeley

    "...How was the discovery made? What has been the progress since, in understanding dark energy and the accelerating universe?"

    Nobel laureate will discuss these questions and more!

    For more information and details, please visit


    *No registration required*

  • Condensed Matter Seminar: Microfluidic Pathways towards Topological Defect Templates


    Professor Anupam Sengupta, MIT

    Liquid crystals (LCs) are mesogenic phases of matter which combine liquid fluidity with crystalline solid properties.The material anisotropy allows us to explore LCs as complex functional materials for microfluidics. Harnessing the anisotropic coupling between the flow and the molecular ordering renders a novel perspective to the conventional concepts in microfluidics.

  • Astronomy Seminar: TBD

    DRL A6

    Andreu Font-Ribera (LBNL)

  • Experimental Particle Physics Seminar: Detecting Cosmic Neutrinos with Ice Cube at the Earth's South Pole

    David Rittenhouse Laboratory 3W2

    Naoko Kurahashi Neilson, Drexel


  • Department Colloquium:"Control Without Measurement: The Profound Challenge of Quantum Information"

    Glandt Forum, Singh Center for Nanotechnology Krishna P. Singh Center for Nanotechnology

    Charles Marcus, Neils Bohr Institute, University of Copenhagen

  • Condensed Matter Seminar: “Making Cells with Active Micro-tubule Mixtures”


    Professor Jennifer Ross, UMass Amherst

    Biology utilizes energy to organize itself from the nanoscale to the macroscopic scale. We seek to determine the universal principles of organization from the molecular scale that gives rise to architecture on the cellular scale. We are specifically interested in the organization of the microtubule cytoskeleton, a rigid, yet versatile network in most cell types. Microtubules in the cell are organized by motor proteins and crosslinkers.

  • Astronomy Seminar: Massive Galaxy Growth since Cosmic Noon

    DRL A6

    Stijn Wuyts (MPE Garching)

    The Hubble Space Telescope and integral-field spectrographs on the
    ground offer us an unprecedented view of the internal physics within
    high-redshift galaxies.  Exploiting the powerful synergy between
    multi-band high-resolution imaging from CANDELS and spectroscopy from
    3D-HST, SINS, and KMOS^3D, I will present new insights on resolved
    stellar populations, bulge growth and quenching since z ~ 2.5, as well
    as dynamical constraints on the mass budget in early disks.  I will
    emphasize the importance of using both stellar and gaseous tracers to

  • Department Colloquium: The First Luminous Objects and the Epoch of Reionization


    Adam Lidz, UPenn

    An exciting and largely unexplored frontier in observational and theoretical cosmology is to understand the properties of the universe between 400,000 years and one billion years after the big bang. Notably, the first galaxies formed in this time period, perhaps
     a few hundred million years after the big bang.  These galaxies
     strongly influenced the gas in their surroundings as well as the
     formation of subsequent generations of galaxies. The early galaxies
     emitted ultraviolet light and ionized "bubbles" of hydrogen gas around

  • *New Course this Fall*


    Professor Gary Gibbons, University of Pennsylvania


    Prerequisites: A first course in general relativity, including the idea of a Lie derivative and Killing vector fields

    The course will start with a heuristic account of the Chandrasekhar limit for white dwarfs and the maximum mass of neutron stars. This motivates the study of spheri- cally symmetric gravitational collapse and the introduction of Eddington-Finkelstein and Krusakl coordinates. Causal structure is illustrated by the introduction of Carter-Penrose diagrams and Penrose’s notion of a Conformal Boundary.