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November 10, 2015
Wilson Hall
US/Central timezone

Talks & Abstracts

Name  Institution Title Abstract
Juan Estrada Fermilab MKIDs as a Tool for Dark Energy Will discuss the possible role of Microwave Kinetic Inductance detectors as a tool for Dark Energy studies.
Josh Frieman Fermilab/Univ. Chicago Some Considerations for Southern Wide-Field Spectroscopy This talk is meant to motivate discussion of a range of options for next-generation, wide-field, highly-multiplexed spectroscopic surveys of LSST targets for cosmology.
Dragan Huterer Univ. of Michigan Huge-volume LSS surveys and fundamental cosmology  
Steve Kuhlmann Argonne National Laboratory Ring Resonator Development for Dark Energy Science Ground-based instruments operating in the red to near-infrared (NIR) wavelength range are plagued by the sky background due to emission lines of the hydroxyl molecule OH in Earth's upper atmosphere.  This affects DES, LSST, and DESI.   For example, DES supernovae integrate much longer in its red bands than its blue bands in order to reach similar signal-to-noise, which affects the cadence of the entire survey.  The NIR range is even worse:  in order to reach the same signal-to-noise level at 1500nm as the optical, one has to integrate 1800 times longer. 
We plan to investigate the use of ring resonator filters, commonly used in telecommunications, to surgically suppress the narrow lines, while maintaining good efficiency for the remaining wavelengths. These filters would be initially used in a modest program to follow-up LSST supernovae with much improved NIR measurements than currently possible.   NIR measurements for supernovae have been demonstrated to be immune to dust effects and provide better standard candles.
Brice Ménard Johns Hopkins University Clustering-based Redshift Estimation  
Marcelle Soares-Santos Fermilab Cosmology with Gravitational Waves in Future Cosmic Surveys In this talk I describe the ongoing DES initiative of searches for optical counterparts for gravitational wave events and discuss prospects for our long term-goal of establishing a new cosmological probe, cosmic sirens, in the era of DESI, LSST and beyond.
Albert Stebbins Fermilab The Coming Era of Radio Cosmology It is likely that radio techniques will become an important component of future cosmological surveys in the near future and and may even surpass optical surveys.  A radio survey technique which is currently being developed/demonstrated by the CHIME and Tianlai experiments is intensity mapping of the 21cm HI line.  Intensity mapping of other lines may also play an important role.  More speculative methods might be developed using the enigmatic but ubiquitous Fast Radio Bursts (FRBs).  FRBs may provide distance estimators competitive with SNe-Ia and can be used not only to develop an alternative Hubble diagram but also to map out large-scale structure (LSS).
David Weinberg Ohio State University Dark Energy from Space: Euclid and WFIRST This will be a remote (invited) talk.    I will discuss the currently planned dark energy surveys of Euclid (briefly) and WFIRST (in more detail).  I will devote particular attention to how these projects complement and overlap each other and how they complement and overlap LSST and DESI, including some of the opportunities for joint analyses of the data sets.  All four of these experiments will provide data sets that are extraordinary advances over the current state of the art.  Whether they will produce revolutionary advances in our understanding of cosmic acceleration depends partly on whether we can improve our control of systematic
uncertainties to the same degree that we improve our statistical power, and most of all on what nature has in store.