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April

| Event Location: Connect via zoom | Speaker: Sam Guns (UC Berkeley)

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Large-area transient surveys are a powerful source of information on a wide class of high-energy astrophysical objects, including gamma-ray burst afterglows, the jet launch area of active galactic nuclei, tidal-disruption events, and stellar flares. Current transient surveys operate at nearly every wavelength from gamma rays through radio, but the millimeter wavelength range is comparatively unexplored. However, current generation cosmic microwave observatories have the necessary cadence and daily sensitivity to fill this millimeter-wave gap.

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Add to Calendar 2021-04-12T15:00:00 2021-04-12T16:00:00 Exploring The Transient Sky At Millimeter Wavelengths With SPT-3G Large-area transient surveys are a powerful source of information on a wide class of high-energy astrophysical objects, including gamma-ray burst afterglows, the jet launch area of active galactic nuclei, tidal-disruption events, and stellar flares. Current transient surveys operate at nearly every wavelength from gamma rays through radio, but the millimeter wavelength range is comparatively unexplored. However, current generation cosmic microwave observatories have the necessary cadence and daily sensitivity to fill this millimeter-wave gap. Event Location: Connect via zoom

April

| Event Location: Connect via zoom | Speaker: David Hertzog (U Washington)

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One of the most promising ways of searching for evidence of physics beyond the standard model is through precision measurements of the so-called "g-factor" of the muon. Twenty years ago, the Brookhaven experiment that measured the muon’s anomalous magnetic moment aμ = (g-2)/2 completed its data-taking campaign.  When the final analyses were published a few years later, the result differed by more than 2 standard deviations (σ) from the concurrent standard model (SM) prediction.  Alas, this felt like a rotten situation to be in, one that had to be resolved one way or the other.

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Add to Calendar 2021-04-15T16:00:00 2021-04-15T17:00:00 First Results from the Fermilab Muon g-2 Experiment! One of the most promising ways of searching for evidence of physics beyond the standard model is through precision measurements of the so-called "g-factor" of the muon. Twenty years ago, the Brookhaven experiment that measured the muon’s anomalous magnetic moment aμ = (g-2)/2 completed its data-taking campaign.  When the final analyses were published a few years later, the result differed by more than 2 standard deviations (σ) from the concurrent standard model (SM) prediction.  Alas, this felt like a rotten situation to be in, one that had to be resolved one way or the other. Event Location: Connect via zoom

April

| Event Location: Connect via zoom | Speaker: Ting Li (Carnegie)

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The Southern Stellar Stream Spectroscopic Survey (S5) is an ongoing spectroscopic program that maps the newly discovered stellar streams with the fiber-fed AAOmega spectrograph on the Anglo-Australian Telescope (AAT). S5 is the first systematic program pursuing a complete census of known streams in the Southern Hemisphere, providing a uniquely powerful sample for understanding the building blocks of the Milky Way's stellar halo, the progenitors and formation of stellar streams, the mass and shape of the Milky Way's halo, and ultimately the nature of dark matter.

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Add to Calendar 2021-04-19T15:00:00 2021-04-19T16:00:00 The Southern Stellar Stream Spectroscopic Survey: Overview and Latest Science Results The Southern Stellar Stream Spectroscopic Survey (S5) is an ongoing spectroscopic program that maps the newly discovered stellar streams with the fiber-fed AAOmega spectrograph on the Anglo-Australian Telescope (AAT). S5 is the first systematic program pursuing a complete census of known streams in the Southern Hemisphere, providing a uniquely powerful sample for understanding the building blocks of the Milky Way's stellar halo, the progenitors and formation of stellar streams, the mass and shape of the Milky Way's halo, and ultimately the nature of dark matter. Event Location: Connect via zoom

April

| Event Location: via Zoom | Speaker: AMY QU

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Abstract:

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Add to Calendar 2021-04-20T14:00:00 2021-04-20T16:00:00 Departmental Doctoral Oral Examination (Thesis Title: “Atomic modification of graphene on silicon carbide: adsorption and intercalation”) Abstract: Event Location: via Zoom

April

| Event Location: Connect via zoom | Speaker: David Kaiser (MIT)

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Abstract: For decades, physicists have conducted experimental tests of quantum entanglement, a phenomenon that Albert Einstein once dismissed as "spooky action at a distance." Despite Einstein's misgivings, the experiments have consistently found results compatible with quantum theory; today entanglement is at the heart of next-generation devices like quantum computers and quantum encryption. Yet every experimental test has been subject to one or more "loopholes," which (in principle) could account for the results even in the absence of genuine quantum entanglement.

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Add to Calendar 2021-04-22T16:00:00 2021-04-22T17:00:00 Cosmic Bell Experiments: Using Quasars to Test Quantum Theory Abstract: For decades, physicists have conducted experimental tests of quantum entanglement, a phenomenon that Albert Einstein once dismissed as "spooky action at a distance." Despite Einstein's misgivings, the experiments have consistently found results compatible with quantum theory; today entanglement is at the heart of next-generation devices like quantum computers and quantum encryption. Yet every experimental test has been subject to one or more "loopholes," which (in principle) could account for the results even in the absence of genuine quantum entanglement. Event Location: Connect via zoom