Synthetic dust polarization emission maps at 353 GHz for an observer placed inside a Local Bubble-like cavity

We present a study of synthetic observations of polarized dust emission at 353 GHz as seen by an observer within a cavity in the interstellar medium (ISM). The cavity is selected from a magnetohydrodynamic simulation of the local ISM with time-dependent chemistry, star formation, and stellar feedbac...

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Bibliographic Details
Published in:arXiv.org 2023-06
Main Authors: Maconi, E, Soler, J D, Reissl, S, Girichidis, P, Klessen, R S, Hennebelle, P, Molinari, S, Testi, L, Smith, R J, Sormani, M C, Teh, J W, Traficante, A
Format: Article
Language:English
Subjects:
Astronomical maps
Astronomy
Cosmology
Dust
Emission analysis
Magnetic fields
Physical properties
Polarization
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Summary:We present a study of synthetic observations of polarized dust emission at 353 GHz as seen by an observer within a cavity in the interstellar medium (ISM). The cavity is selected from a magnetohydrodynamic simulation of the local ISM with time-dependent chemistry, star formation, and stellar feedback in form of supernova explosions with physical properties comparable to the Local Bubble ones. We find that the local density enhancement together with the coherent magnetic field in the cavity walls makes the selected candidate a translucent polarization filter to the emission coming from beyond its domains. This underlines the importance of studying the Local Bubble in further detail. The magnetic field lines inferred from synthetic dust polarization data are qualitatively in agreement with the all-sky maps of polarized emission at 353 GHz from the Planck satellite in the latitudes interval 15deg
ISSN:2331-8422
DOI:10.48550/arxiv.2212.06598