Bulletin of the American Physical Society
APS April Meeting 2019
Volume 64, Number 3
Saturday–Tuesday, April 13–16, 2019; Denver, Colorado
Session W01: 90th Anniversary of the APS Reviews of Modern PhysicsInvited Plenary Undergraduate
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Chair: Randall Kamien, University of Pennsylvania Room: Sheraton Plaza ABC |
Tuesday, April 16, 2019 8:30AM - 9:06AM |
W01.00001: Laser-based advanced accelerators Invited Speaker: Wim Pieter Leemans We will discuss the progress on building laser powered, plasma based particle accelerators where electrons surf on waves and can reach energy levels in a few inches that, if one relies on conventional methods, would require machines multiple football fields long. Although many challenges remain, this new technology is at the brink of offering a profoundly different way in which we may build particle accelerators such as used in future colliders or in medical cancer therapy devices. |
Tuesday, April 16, 2019 9:06AM - 9:42AM |
W01.00002: The search for Dark Matter in underground laboratories around the world Invited Speaker: Elena Aprile What is the Dark Matter which makes 85% of the matter in the Universe? We have been asking this |
Tuesday, April 16, 2019 9:42AM - 10:18AM |
W01.00003: Our Galactic Center: A Unique Laboratory for the Physics & Astrophysics of Black Holes Invited Speaker: Andrea M Ghez The proximity of our Galaxy's center presents a unique opportunity to study a galactic nucleus with orders of magnitude higher spatial resolution than can be brought to bear on any other galaxy. After more than a decade of diffraction-limited imaging on large ground-based telescopes, the case for a supermassive black hole at the Galactic center has gone from a possibility to a certainty, thanks to measurements of individual stellar orbits. The rapidity with which these stars move on small-scale orbits indicates a source of tremendous gravity and provides the best evidence that supermassive black holes, which confront and challenge our knowledge of fundamental physics, do exist in the Universe. This work was made possible through the use of speckle imaging techniques, which corrects for the blurring effects of the earth's atmosphere in post-processing and allowed the first diffraction-limited images to be produced with these large ground-based telescopes. |
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