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Anthony Pullen (NYU) Title: Revealing CII Emission with LSS Cross-correlations

October 19, 2017 @ 4:00 pm - 5:00 pm

Abstract:
In this talk, I will present our joint measurement of cosmic infrared background (CIB) and CII line emission from large scales at redshift z=2.5 using an MCMC analysis of cross-correlations of the 3 high-frequency Planck bands with both SDSS-III quasars at z=2-3.2 and SDSS-III CMASS galaxies at z=0.43-0.7.  The CII emission is expected to correlate with the quasars and appear in the Planck 545 GHz band, while the other cross-correlations are assumed to mostly be attributable to CIB-LSS correlations.  We report an excess emission inconsistent with the null result at 95% confidence, with an intensity value favoring the higher range of CII models.  I will also forecast potential CII intensity constraints from Planck cross-correlated with DESI quasars.

Details

Date:
October 19, 2017
Time:
4:00 pm - 5:00 pm

Venue

50A-5132 (Sessler Conference Room)
50A-5132