| Title: |
Full-sky models of Galactic microwave emission and polarization at subarcminute scales for the Python Sky Model |
| Authors: |
The Pan-Experiment Galactic Science Group; Borrill, Julian; Delabrouille, Jacques; Ghosh, Shamik; Hensley, Brandon S.; Krachmalnicof, Nicoletta; Pryke, Clement; Remazeilles, Mathieu |
| Contributors: |
Agencia Estatal de Investigación (España); Ministerio de Ciencia, Innovación y Universidades (España); National Science Foundation (US); Alfred P. Sloan Foundation; Department of Energy (US); European Commission; NASA; Consejo Superior de Investigaciones Científicas https://ror.org/02gfc7t72 |
| Publisher Information: |
IOP Publishing |
| Publication Year: |
2025 |
| Collection: |
Digital.CSIC (Consejo Superior de Investigaciones Científicas / Spanish National Research Council) |
| Description: |
The Pan-Experiment Galactic Science Group: et al. ; Polarized foreground emission from the Galaxy is one of the biggest challenges facing current and upcoming cosmic microwave background (CMB) polarization experiments. We develop new models of polarized Galactic dust and synchrotron emission at CMB frequencies that draw on the latest observational constraints; that employ the “polarization fraction tensor” framework to couple intensity and polarization in a physically motivated way; and that allow for stochastic realizations of small-scale structure at subarcminute angular scales currently unconstrained by full-sky data. We implement these models into the publicly available Python Sky Model (PySM) software and additionally provide PySM interfaces to select models of dust and CO emission from the literature. We characterize the behavior of each model by quantitatively comparing it to observational constraints in both maps and power spectra, demonstrating an overall improvement over previous PySM models. Finally, we synthesize models of the various Galactic foreground components into a coherent suite of three plausible microwave skies that span a range of astrophysical complexity allowed by current data. Author contributions to this paper can be found at the end of this work. ; We thank the Atacama Cosmology Telescope (ACT), BICEP/Keck, BLAST, CCAT, CMB-S4, LiteBIRD, Simons Observatory (SO), and South Pole Telescope (SPT) Collaborations for their support of the Pan-Experiment Galactic Science Group. This work was supported by the National Science Foundation under grant Nos. AST-2106607 and AST-2441452 (PI: S.E.C.). S.E.C. additionally acknowledges support from an Alfred P. Sloan Research Fellowship. This research used resources of the National Energy Research Scientific Computing Center, a DOE Office of Science User Facility supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231 using NERSC award HEP-ERCAP0032657. N.K. and M.R. acknowledge support by the ... |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/pdf |
| Language: |
English |
| Relation: |
#PLACEHOLDER_PARENT_METADATA_VALUE#; info:eu-repo/grantAgreement/EC/HE/101135036; info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2022-139223OB-C21/ES/INVESTIGACION DE FRONTERA EN COSMOLOGIA CON LITEBIRD: CONTRIBUCION AL INSTRUMENTO MHFT Y AL CENTRO DE PROCESADO DE DATOS, Y PREPARACION PARA LA EXPLOTACION CIENTIFICA/; info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2022-140670NA-I00/ES/DESVELANDO EL COSMOS CON EXPERIMENTOS DE MAPEADO DE INTENSIDADES DE LINEA/; https://doi.org/10.3847/1538-4357/adf212; Sí; Astrophysical Journal 991(1): 23 (2025); https://hdl.handle.net/10261/406341; http://dx.doi.org/10.13039/100000879; http://dx.doi.org/10.13039/100000104; http://dx.doi.org/10.13039/501100011033; http://dx.doi.org/10.13039/100000001; http://dx.doi.org/10.13039/100000015; http://dx.doi.org/10.13039/501100000780 |
| DOI: |
10.3847/1538-4357/adf212 |
| DOI: |
10.13039/100000879 |
| DOI: |
10.13039/100000104 |
| DOI: |
10.13039/501100011033 |
| DOI: |
10.13039/100000001 |
| DOI: |
10.13039/100000015 |
| DOI: |
10.13039/501100000780 |
| Availability: |
https://hdl.handle.net/10261/406341; https://doi.org/10.3847/1538-4357/adf212; https://doi.org/10.13039/100000879; https://doi.org/10.13039/100000104; https://doi.org/10.13039/501100011033; https://doi.org/10.13039/100000001; https://doi.org/10.13039/100000015; https://doi.org/10.13039/501100000780 |
| Rights: |
info:eu-repo/semantics/openAccess |
| Accession Number: |
edsbas.7CAFEADF |
| Database: |
BASE |