Bulletin of the American Physical Society
18th Annual Meeting of the APS Northwest Section,
Volume 62, Number 7
Thursday–Saturday, June 1–3, 2017; Forest Grove, Oregon
Session A1: Plenary Session I |
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Room: Taylor-Meade Performing Arts Center McCready Hall |
Friday, June 2, 2017 8:45AM - 9:20AM |
A1.00001: Adventures beyond the WIMP dark matter paradigm: dark matter nuclei? Invited Speaker: Moira Gresham Strong evidence for dark matter has existed for 30+ years, but its identity is still unknown. After an overview of some of the most attractive (or at least popular) candidates for particle dark matter, we explore the physics of a dark sector that allows for a spectrum of stable bound states of dark matter---the analog of nuclei. [Preview Abstract] |
Friday, June 2, 2017 9:20AM - 9:55AM |
A1.00002: Large-scale Structure of the Universe in the Age of Digital Telescopes Invited Speaker: Kiyoshi Masui A powerful tool for understanding the Universe is the distribution of matter on scales much larger than galaxies. Observations of the large-scale structure will build on the legacy of cosmic microwave background, probing the Universe in three dimensions, mapping larger volumes, and thus yielding higher precisions. The structures we observe today grew from the gravitational collapse of seed structures laid down in the very early Universe, and that growth was affected by the physical processes that occur throughout its evolution. The detailed statistics of the structure thus contain information about the early Universe, fundamental physics, and the late-time acceleration of the Universe's expansion. The observationally dominant method for mapping large-scale structure is spectroscopic galaxy surveys, where the positions of millions of galaxies are catalogued and aggregated into a statistical sampling of the large-scale structure. However, there are now a number of surveys that will employ the new technique of hydrogen intensity mapping. Such surveys will use the 21\,cm radio line from the hyperfine transition in neutral hydrogen to directly image the structure in three dimensions using radio telescopes. Aided by recent technological developments that have enabled a novel design of digital, rapid-survey radio telescope, hydrogen mapping will permit larger volumes to be surveyed, on a greater range of scales, and over many epochs of the Universe's evolution. [Preview Abstract] |
Friday, June 2, 2017 9:55AM - 10:30AM |
A1.00003: LIGO and the Era of Gravitational Wave Astronomy Invited Speaker: Joey Shapiro Key Following a major upgrade, the two advanced detectors of the Laser Interferometer Gravitational-wave Observatory (LIGO) held their first observation run (O1) between September 2015 and January 2016. On September 14th, 2015 the Advanced LIGO detectors observed the transient gravitational-wave signal GW150914, determined to be the coalescence of two black holes, launching the era of gravitational-wave astronomy. Another confirmed observation in O1 contributes to our observational evidence for black holes in LIGO data and has important astrophysical implications. The second Advanced LIGO observation run (O2) began on November 30, 2016 and is currently in progress. As we enter the era of observational gravitational wave astronomy we can look forward to improved detector sensitivity, access to new frequency regimes with other gravitational wave experiments, and multi-messenger detections in collaboration with our electromagnetic astronomy partners. [Preview Abstract] |
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