Regular Seminars are usually held every Monday.


Raw date Event date Title Speakers Host Summary Links
20190722 July 22, 2019, 2:00 pm Probing Dark Matter and Dark Energy with Strong Gravitational Lensing Simon Birrer, University of California, Los Angeles Gordon Krnjaic Evidence from different cosmological probes have lead to the establishment of the dark matter and dark energy paradigm. Dark matter dominates the matter budget at cosmological scales and drives the formation of structure and dark energy is responsible for the late time acceleration of the universe. In my talk, I will describe how we use... More »
20190805 Aug. 5, 2019, 2:00 am Pulsar Timing as a Probe of Primordial Black Holes and Subholes Asaf Jeff Dror, Lawrence Berkeley National Laboratory Gordon Krnjaic Abstract: Pulsars act as accurate clocks, sensitive to gravitational redshift and acceleration induced by transiting clumps of matter. In this talk, I study the sensitivity of pulsar timing arrays (PTA) to transiting compact dark matter objects, focusing on primordial black holes and subhalos. Such dark matter clumps can result in different classes of signals observable in pulsar timing experiments depending on the... More »


Past seminars