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Astronomy Colloquium
COLLOQUIUM CANCELLED: The Experiment for Cryogenic Large-aperture Intensity Mapping (EXCLAIM)
Date: Thursday, March 5th
Time: 3:30 pm
Place: 4421 Sterling Hall
Speaker: Dr. Eric Switzer , NASA/Goddard
Abstract: CANCELLED BECAUSE OF NEW NASA TRAVEL REGULATIONS REGARDING COVID-19 VIRUS. RESCHEDULED FOR NOVEMBER 6. The EXperiment for Cryogenic Large-Aperture Intensity Mapping (EXCLAIM) is a cryogenic balloon-borne instrument that will survey galaxy and star formation history over cosmological time scales. Rather than identifying individual objects, EXCLAIM will be a pathfinder to demonstrate an intensity mapping approach, which measures the cumulative redshifted line emission. EXCLAIM will operate at 420-540 GHz with a spectral resolution R=512 to measure the integrated CO and [CII] in redshift windows spanning 0 < z < 3.5. CO and [CII] line emissions are key tracers of the gas phases in the interstellar medium involved in star-formation processes. EXCLAIM will shed light on questions such as why the star formation rate declines at z < 2, despite continued clustering of the dark matter. The instrument will employ an array of six superconducting integrated grating-analog spectrometers (micro-spec) coupled to microwave kinetic inductance detectors (MKIDs). I will present an overview of the EXCLAIM instrument design and status.
Host: Timbie
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