Particle Physics Seminar: SB/BNL Joint Cosmo Seminar

"Revealing CII Emission with LSS Cross-correlations"

Presented by Anthony Pullen, NYU

Thursday, November 10, 2016, 3:00 pm — Small Seminar Room, Bldg. 510

The CII emission line tends to be the brightest line in star-forming galaxies, making it an ideal tracer of large-scale structure. Through the method of intensity mapping, astronomers hope to map CII emission at cosmological redshifts and large volumes, making CII and unprecedented probe of cosmology and reionization. However, the various models of the expected CII emission are highly uncertain by orders of magnitude, limiting our ability to predict how well potential CII surveys could probe large-scale structure. In this talk, I will present our measurement of excess emission from large scales at redshift z=2.5 potentially attributable to CII emission. This excess emission was measured by cross-correlating the 545 GHz broad-band microwave map from the Planck satellite and high-redshift quasars from the Sloan Digital Sky Survey. I will also discuss future opportunities with CII intensity mapping.

Hosted by: Anze Slosar

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