论文标题

ProtoCalc:CMB望远镜的人工校准源

PROTOCALC: an artificial calibrator source for CMB telescopes

论文作者

Coppi, Gabriele, Conenna, Giulia, Savorgnano, Sofia, Carrero, Felipe, Dünner-Planella, Rolando, Galitzki, Nicholas, Nati, Federico, Zannoni, Mario

论文摘要

宇宙微波背景实验需要非常准确地测量传入辐射的极化特性,以实现其科学目标。因此,有必要正确地表征这些工具。但是,没有天然来源可用于此目的。因此,我们开发了用于宇宙学的原型校准器ProtoCalc,它是为这些望远镜90GHz带设计的校准源。该源纯粹是极化的,并且偏振载体的方向的精度比0.1维克更好。该消息来源于2022年5月首次飞行,显示出令人鼓舞的结果

Cosmic Microwave Background experiments need to measure polarization properties of the incoming radiation very accurately to achieve their scientific goals. As a result of that, it is necessary to properly characterize these instruments. However, there are not natural sources that can be used for this purpose. For this reason, we developed the PROTOtype CALibrator for Cosmology, PROTOCALC, which is a calibrator source designed for the 90GHz band of these telescopes. This source is purely polarized and the direction of the polarization vector is known with an accuracy better than 0.1deg. This source flew for the first time in May 2022 showing promising result

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