2020
Simulation of the cosmic ray effects for the LiteBIRD satellite observing the CMB B-mode polarization
Proceedings of SPIE - The International Society for Optical Engineering
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- Volume
- 11453
- Number
- Language
- English
- Publishing type
- Research paper (international conference proceedings)
- DOI
- 10.1117/12.2576127
- Publisher
- SPIE-INT SOC OPTICAL ENGINEERING
The LiteBIRD satellite is planned to be launched by JAXA in the late 2020s. Its main purpose is to observe the large-scale B-mode polarization in the Cosmic Microwave Background (CMB) anticipated from the Inflation theory. LiteBIRD will observe the sky for three years at the second Lagrangian point (L2) of the Sun-Earth system. Planck was the predecessor for observing the CMB at L2, and the onboard High Frequency Instrument (HFI) suffered contamination by glitches caused by the cosmic-ray (CR) hits. We consider the CR hits can also be a serious source of the systematic uncertainty for LiteBIRD. Thus, we have started a comprehensive end-To-end simulation study to assess impact of the CR hits for the LiteBIRD detectors. Here, we describe procedures to make maps and power spectra from the simulated time-ordered data, and present initial results. Our initial estimate is that ClBB by CR is ∼ 2 ×10-6 μK2CMB in a one-year observation with 12 detectors assuming that the noise is 1 aW/ √ Hz for the differential mode of two detectors constituting a polarization pair.
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- DOI
- https://doi.org/10.1117/12.2576127
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000850905600041&DestApp=WOS_CPL
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- https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85100049735&origin=inward
- Scopus Citedby
- https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85100049735&origin=inward
- ID information
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- DOI : 10.1117/12.2576127
- ISSN : 0277-786X
- eISSN : 1996-756X
- ISBN : 9781510636934
- SCOPUS ID : 85100049735
- Web of Science ID : WOS:000850905600041