Sara M. Simon

Constraining Cosmic Birefringence with Polarization Angle Calibration

Sara M. Simon

The Cosmic Microwave Background (CMB) is a sensitive probe of cosmic birefringence, which, if detected, would imply physics beyond the standard model. For example, cosmic birefringence can be caused by axion-like pseudo scalar-fields coupling to photons via the Chern-Simons effect. These represent …

us (code pays fourni par la source)

The Millimeter Universe with CMB-S4

Sara M. Simon

CMB-S4, the next-generation ground-based cosmic microwave background (CMB) experiment, will make measurements with unprecedented precision and provide fundamental new insights into physics and astronomy. Its key measurements will include the search for primordial gravitational waves, probes of the nature of dark matter …

us (code pays fourni par la source)

The Simons Observatory: impact of bandpass, polarization angle and calibration uncertainties on small-scale power spectrum analysis

S. Giardiello, M. Gerbino, L. Pagano, David Alonso et autres

Abstract We study the effects due to mismatches in passbands, polarization angles, and temperature and polarization calibrations in the context of the upcoming cosmic microwave background experiment Simons Observatory (SO). Using the SO multi-frequency likelihood, we estimate the bias and the degradation …

it, gb, fr, us, au (code pays fourni par la source)

The Simons Observatory: Beam Characterization for the Small Aperture Telescopes

Nadia Dachlythra, Adriaan J. Duivenvoorden, Jon E. Gudmundsson, Matthew Hasselfield et autres

Abstract We use time-domain simulations of Jupiter observations to test and develop a beam reconstruction pipeline for the Simons Observatory Small Aperture Telescopes. The method relies on a mapmaker that estimates and subtracts correlated atmospheric noise and a beam fitting code designed …

se, us, is, it, gb, jp, fr, no, cl (code pays fourni par la source)

Conceptual Design of the Modular Detector and Readout System for the CMB-S4 survey experiment

D. R. Barron, Zeeshan Ahmed, J. Aguilar, A. J. Anderson et autres

We present the conceptual design of the modular detector and readout system for the Cosmic Microwave Background Stage 4 (CMB-S4) ground-based survey experiment. CMB-S4 will map the cosmic microwave background (CMB) and the millimeter-wave sky to unprecedented sensitivity, using 500,000 superconducting detectors …

Far sidelobes from baffles and telescope support structures in the Atacama Cosmology Telescope

Nicholas F. Cothard, Rolando Dünner, Brian J. Koopman, Michael D. Niemack et autres

The Atacama Cosmology Telescope (ACT) is a 6 m telescope located in the Atacama Desert, designed to measure the cosmic microwave background (CMB) with arcminute resolution. ACT, with its third generation polarization sensitive array, Advanced ACTPol, is being used to measure the …

us, cl (code pays fourni par la source)

Studies of systematic uncertainties for Simons Observatory: detector array effects

Sara M. Simon, Kevin T. Crowley, Maximiliano Silva-Feaver, N. Goeckner-Wald et autres

In this proceeding, we present studies of instrumental systematic effects for the Simons Obsevatory (SO) that are associated with the detector system and its interaction with the full SO experimental systems. SO will measure the Cosmic Microwave Background (CMB) temperature and polarization …

us, gb, fr (code pays fourni par la source)

Characterization of the Mid-Frequency Arrays for Advanced ACTPol

Steve K. Choi, Jason E. Austermann, J. A. Beall, Kevin T. Crowley et autres

us (code pays fourni par la source)

Advanced ACTPol Low-Frequency Array: Readout and Characterization of Prototype 27 and 39 GHz Transition Edge Sensors

Brian J. Koopman, Nicholas F. Cothard, Steve K. Choi, Kevin T. Crowley et autres

us (code pays fourni par la source)