detalle del documento
IDENTIFICACIÓN
oai:arXiv.org:2411.11440
Tema
Astrophysics - Cosmology and Nonga...Autor
Zhou, Yuyang Lee, Adrian Chinone, YujiCategoría
ciencias: astrofísica
Año
2024
fecha de cotización
26/2/2025
Palabras clave
tod satellite levels experiment noise e-modeResumen
E to B mixing or "leakage" due to time-ordered data (TOD) filtering has become an important source of sensitivity loss that ground-based cosmic microwave background polarization experiments must address.
However, it is a difficult problem for which very few viable solutions exist.
In this paper, we expand upon satellite E-mode methods to cover E/B leakage specifically due to TOD filtering.
We take a satellite E-mode map and TOD filter it through the ground-based experiment data analysis pipeline, from which we construct a map-space "leakage template" and subtract it from the ground-based experiment map.
We evaluate the residual leakage by simulating the satellite E-mode maps with Planck-like and LiteBIRD-like noise levels, and simulate the ground-based experiment with Simons Observatory-like and CMB-S4-like noise levels.
The effectiveness of the method is measured in the improvement of the Fisher uncertainty $\sigma(r=0)$.
We find that our method can reduce $\sigma(r=0)$ by $\sim15\text{--}75\%$ depending on the noise levels considered.
;Comment: 24 pages, 19 figures
Zhou, Yuyang,Lee, Adrian,Chinone, Yuji, 2024, Map-based E/B separation of filtered timestreams using space-based E-mode observations
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