Day 698

Monday.

1407.2941
Modeling reverberation mapping data I: improved geometric and dynamical models and comparison with cross-correlation results
Pancoast, Brewer, Treu

Present an improved and expanded simply parameterized phenomenological model of the BLR in AGN for modeling reverberation mapping data.  By modeling reverberation mapping directly, constrain the geometry and dynamics of the BLR and measure the BH mass without relying on the normalization factor needed in the traditional analysis.  For realistic simulated reverberation mapping datasets of high quality, can recover the BH mass to 0.05-0.25 dex uncertainty and distinguish between dynamics dominated by elliptical orbits and inflowing gas. While direct modeling of the integrated emission line light curve allows for measurement of the mean time lag, other details of the geometry of the BLR are better constrained by the full spectroscopic dataset of emission line profiles.  Use this improved model of the BLR to explore possible sources of uncertainty in measurements of the time lag using cross-correlaiton function (CCF) analysis and in measurements of the BH mass using the virial product.  Sampling the range of geometries and dynamics in the model of the BLR suggests that the theoretical uncertainty in BH masses measured using the virial product is on the order of 0.25 dex.  These results support the use of the CCF to measure time lags and the virial product to measure BH masses when direct modeling techniques cannot be applied, provided the uncertainties associated with the interpretation of the results are taken into account.

1407.2973
SPT-3G: a next-generation cosmic microwave background polarization experiment on the South Pole Telescope
Benson, et al

A new polarization sensitive receiver, SPT-3G for the 10m SPT described.  Will deliver a ~20x improvement in mapping speed over the current receiver, SPTpol.  The sensitivity of the SPT-3G receiver will enable the advance from statistical detection of B-mode polarization anisotropy power to high S/N measurements of the individual modes, i.e., maps.  This will lead to precise (~0.06 eV) constraints on the sum of neutrino masses with the potential to directly address the neutrino mass hierarchy.  It will allow a separation of the lensing and inflationary B-mode PS, improving constraints on the amplitude and shape of the primordial signal, either through SPT-3G data alone or in combination with BICEP-2/KECK, which is observing the same area of the sky.  The measurement of small-scale temperature anisotropy will provide new constraints on the epoch of reionization.  Additional science from the SPT-3G survey will be significantly enhanced by the synergy with the ongoing DES survey, including: a 1% constraint on the bias of optical tracers of large-scale structure, a measurement of the differential Doppler signal from pairs of galaxy clusters that will test GR on ~200 Mpc scales, and improved cosmological constraints from the abundance of clusters of galaxies.