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November CAS Meeting

November 4, 2020 @ 7:00 pm 9:00 pm

DAPPER – An Adventure in Measurement

presented by Richard Bradley,

Scientist / Senior Research

Engineer and Director at Space

Electronics Laboratory (NRAO)

When did the first stars form?  Black holes?  Galaxies?  How did they evolve over time?  While theories abound that suggest viable pathways toward answering such profound questions, accurate radiometrics are required to narrow the field of possibilities and, over time, arrive at the most plausible model of the Universe for this early epoch in its formation.   My talk will examine this pioneering measurement, from its astrophysical framework to the Dark Ages Polarimeter Pathfinder (DAPPER) spacecraft, including the unique challenge of the radiometry, the technical motivation behind the instrument design, the various groups currently attempting this measurement from the ground, and the novel methodologies being developed to assist in the detection process.

Meeting will be conducted virtually. Directions will be sent to CAS Members.


Organizer – Larry Saunders