3-10 August 2016
Chicago IL USA
US/Central timezone
There is a live webcast for this event.

Constraining Inflation and Neutrino Mass with CLASS (15' + 5')

5 Aug 2016, 15:10
Chicago 10 ()

Chicago 10

Oral Presentation Astro-particle Physics and Cosmology Astro-particle Physics and Cosmology


Tobias Marriage (Johns Hopkins)


We are beginning a survey to provide a robust detection and characterization of the imprint of inflationary gravitational radiation in the CMB polarization (the so-called "B modes"). The same polarization measurement will provide the ultimate CMB-based cosmic-variance-limited measurement of the optical depth to reionization. When combined with CMB temperature, lensing and Baryon Acoustic Oscillation data, the optical depth measurement will yield twofold improvements on cosmology-based estimates of the sum of the neutrino masses. To carry out the survey we have built the Cosmology Large Angular Scale Surveyor (CLASS), which is an array of millimeter-wave polarimeters sited at 5200 m in the Atacama Desert. Unique in the field of CMB polarization measurements, CLASS is especially designed to survey 70% of the sky at four frequencies and recover the CMB polarization on all angular scales relevant to inflation and reionization. In this talk I will give an overview of CLASS and discuss progress to date.

Primary author

Tobias Marriage (Johns Hopkins)

Presentation Materials