Event | Date | Summary |
Dragan Huterer (U. Michigan) | Fri. December 1st, 2017 12:45 pm-1:45 pm |
title and abstract tba |
Arthur Kosowsky (Pittsburgh) | Tue. November 28th, 2017 11:30 am-12:30 pm |
title and abstract tba |
Simone Aiola (Princeton) | Tue. November 14th, 2017 11:30 am-12:30 pm |
Cosmology with ACTPol and AdvACT The bolometric polarimeter at the focal plane of the Atacama Cosmology Telescope allows us to map the Cosmic Microwave Background (CMB) with high signal-to-noise both in temperature and polarization. In this talk, I will present the data-reduction pipeline, highlighting the importance of making maximum-likelihood unbiased CMB maps. I will show the two-season ACTPol cosmological results presented in Louis et al. (2017), Sherwin et al. (2017), and Hilton et al. (2017) and describe the current effort to finalize the analysis of the ACTPol dataset. I will conclude with preliminary results from the ongoing AdvACT survey, |
James Bonifacio (Oxford and CWRU) | Tue. October 31st, 2017 11:30 am-12:30 pm |
Title: Amplitudes for massive spinning particles |
Lloyd Knox (UC Davis) | Tue. October 17th, 2017 11:30 am-12:30 pm |
The Standard Cosmological Model: A Status Report Overall, the standard cosmological model has enjoyed enormous empirical success. But there are a number of indicators that we might be missing something. These include the large-scale cosmic microwave background (CMB) “anomalies”, and two to three sigma discrepancies between cosmological parameters derived from larger angular scales of the CMB vs. smaller angular scales, CMB lensing potential reconstruction vs. CMB power spectra, data from the Planck satellite vs. data from the South Pole Telescope, and CMB-calibrated predictions for the current rate of expansion vs. more direct measurements. I will introduce the standard cosmological model, |
Rachel Bezanson (Pittsburgh) | Tue. October 10th, 2017 11:30 am-12:30 pm |
Title: The Surprisingly Complex Lives of Massive Galaxies |
Tiziana Di Matteo (Carnegie Mellon) | Tue. September 26th, 2017 11:30 am-12:30 pm |
The next massive galaxy and quasar frontier at the Cosmic Dawn Many of the advances in our understanding of cosmic structure have come |
Laura Gladstone (CWRU) | Tue. September 19th, 2017 11:30 am-12:30 pm |
Neutrinos: cool, cold, coldest |
Liang Wu, University California Berkeley, MPPL2,Giant nonlinear optical responses in Weyl semimetals | Tue. September 12th, 2017 11:30 pm-12:30 pm |
Giant nonlinear optical responses in Weyl semimetals Recently Weyl quasi-particles have been observed in transition metal monopnictides (TMMPs) such as TaAs, a class of noncentrosymmetric materials that heretofore received only limited attention. The question that arises now is whether these materials will exhibit novel, enhanced, or technologically applicable properties. The TMMPs are polar metals, a rare subset of inversion- breaking crystals that would allow spontaneous polarization, were it not screened by conduction electrons. Despite the absence of spontaneous polarization, polar metals can exhibit other signatures, most notably second-order nonlinear optical polarizability, leading to phenomena such as second-harmonic generation (SHG). |
Gabriela Marques, National Observatory of Rio de Janeiro and CWRU | Tue. September 5th, 2017 11:30 am-12:30 pm |
title and abstract tba Continue reading… Gabriela Marques, National Observatory of Rio de Janeiro and CWRU |