SubsidieMeestersPOLarization Orientation CALibrator for Cosmology
The project aims to enhance CMB polarization measurements using aerial drones for calibration, improving accuracy in detecting gravitational waves and cosmic phenomena.
Projectdetails
Introduction
I will enable groundbreaking results for cosmology and fundamental physics, thanks to a novel method for measuring the angle of the polarization plane of the Cosmic Microwave Background (CMB) photons with unprecedented accuracy. Existing and planned CMB polarimeters looking for primordial B-mode signals need an independent, experimental method for systematics control on the absolute polarization orientation.
Importance of the Method
The lack of such a method limits the accuracy of the detection of:
- Inflationary gravitational waves
- The efficiency in removing polarized foregrounds
- The constraining power on the neutrino sector through measurements of gravitational lensing of the CMB
- The possibility of detecting Cosmic Birefringence
- The ability to measure primordial magnetic fields
Project Overview
My 5-year project will dramatically improve instrumental accuracy by means of artificial calibration sources flying on aerial drones and tethered balloons, within sight of the most advanced ground CMB telescopes, operating at high-elevation angles and far-field distances.
Calibration Sources
The calibrators will make use of linearly-polarized microwave emitters optimally coupled to the Simons Observatory (SO) polarization-sensitive detectors, the world-leading CMB project for the next decade.
Orientation Measurement
The orientation of the source polarization plane will be registered to absolute celestial coordinates by star cameras and ground photogrammetry with arcminute accuracy.
Project Location and Impact
POLOCALC will take advantage of my leading role in SO and will operate from its site in the Atacama Desert in Chile. This project will become a pivot for the field: any existing or future instrument in Atacama will be able to observe my novel polarization calibrator, and future projects will intercalibrate their detectors with the resulting calibrated observations of sky sources.
Expected Outcomes
POLOCALC will produce the first experimentally-calibrated data of the polarization angle of the CMB and its contaminants, allowing existing and future CMB polarimeters to fully mine the cosmic sky.
Financiële details & Tijdlijn
Financiële details
| Subsidiebedrag | € 2.418.281 |
| Totale projectbegroting | € 2.418.281 |
Tijdlijn
| Startdatum | 1-1-2024 |
| Einddatum | 31-12-2028 |
| Subsidiejaar | 2024 |
Partners & Locaties
Projectpartners
- UNIVERSITA' DEGLI STUDI DI MILANO-BICOCCApenvoerder
Land(en)
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