Polarization fraction of <i>Planck</i> Galactic cold clumps and forecasts for the Simons Observatory

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dc.contributor.authorClancy, J.
dc.contributor.authorPuglisi, G.
dc.contributor.authorClark, S. E.
dc.contributor.authorCoppi, G.
dc.contributor.authorFabbian, G.
dc.contributor.authorHervias-Caimapo, C.
dc.contributor.authorHill, J. C.
dc.contributor.authorNati, F.
dc.contributor.authorReichardt, C. L.
dc.date.accessioned2025-01-20T20:07:11Z
dc.date.available2025-01-20T20:07:11Z
dc.date.issued2023
dc.description.abstractWe measure the mean-squared polarization fraction of a sample of 6282 Galactic cold clumps at 353 GHz, consisting of Planck Galactic cold clump (PGCC) catalogue category 1 objects [flux densities measured with signal-to-noise ratio (S/N) > 4]. At 353 GHz, we find the mean-squared polarization fraction, which we define as the mean-squared polarization divided by the mean-squared intensity, to be (4.79 +/- 0.44) x 10(-4) equation to an 11 sigma detection of polarization. We test if the polarization fraction depends on the clumps' physical properties, including flux density, luminosity, Galactic latitude, and physical distance. We see a trend towards increasing polarization fraction with increasing Galactic latitude, but find no evidence that polarization depends on the other tested properties. The Simons Observatory, with angular resolution of order 1 arcmin and noise levels between 22 and 54 mu K-arcmin at high frequencies, will substantially enhance our ability to determine the magnetic field structure in Galactic cold clumps. At >= 5 sigma significance, we predict the Simons Observatory will detect at least similar to 12 000 cold clumps in intensity and similar to 430 cold clumps in polarization. This number of polarization detections would represent a two orders of magnitude increase over the current Planck results. We also release software that can be used to mask these Galactic cold clumps in other analyses.
dc.fuente.origenWOS
dc.identifier.doi10.1093/mnras/stad2099
dc.identifier.eissn1365-2966
dc.identifier.issn0035-8711
dc.identifier.urihttps://doi.org/10.1093/mnras/stad2099
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/91774
dc.identifier.wosidWOS:001050361400039
dc.issue.numero3
dc.language.isoen
dc.pagina.final3723
dc.pagina.inicio3712
dc.revistaMonthly notices of the royal astronomical society
dc.rightsacceso restringido
dc.subjectpolarization
dc.subjectstars: protostars
dc.subjectISM: magnetic fields
dc.subject(Galaxy:) solar neighbourhood
dc.subjectcosmology: observations
dc.titlePolarization fraction of <i>Planck</i> Galactic cold clumps and forecasts for the Simons Observatory
dc.typeartículo
dc.volumen524
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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