A comparison of multi-phase magnetic field tracers in a high-galactic latitude region of the filamentary interstellar medium

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dc.contributor.authorCampbell, Jessica
dc.contributor.authorClark, Susan
dc.contributor.authorTaylor, Andrew
dc.date.accessioned2022-09-05T12:37:48Z
dc.date.available2022-09-05T12:37:48Z
dc.date.issued2022
dc.description.abstractUnderstanding how the Galactic magnetic field threads the multiphase interstellar medium (ISM) remains a considerable challenge, as different magnetic field tracers probe dissimilar phases and field components. We search for evidence of a common magnetic field shared between the ionized and neutral ISM by comparing 1.4 GHz radio continuum polarization and H I line emission from the Galactic Arecibo L-Band Feed Array Continuum Transit Survey (GALFACTS) and Galactic Arecibo L-Band Feed Array H I (GALFA-H I) survey, respectively. We compute the polarization gradient of the continuum emission and search for associations with diffuse/translucent H I structures. The polarization gradient is sensitive to changes in the integrated product of the thermal electron density and line-of-sight field strength (B∥) in warm ionized gas, while narrow H I structures highlight the plane-ofsky field orientation in cold neutral gas. We identified one region in the high Galactic latitude Arecibo sky, G216 +26 centered on (ℓ, b) ∼ (216°, +26°), containing filaments in the polarization gradient that are aligned with narrow H I structures roughly parallel to the Galactic plane.en_US
dc.identifier.citationCampbell, J. et al. (2022). A comparison of multi-phase magnetic field tracers in a high-galactic latitude region of the filamentary interstellar medium. The Astrophysical Journal, 927(1), 49. 10.3847/1538-4357/ac400den_US
dc.identifier.issn1538-4357
dc.identifier.uri10.3847/1538-4357/ac400d
dc.identifier.urihttp://hdl.handle.net/10566/7802
dc.language.isoenen_US
dc.publisherIOP Publishingen_US
dc.subjectAstronomyen_US
dc.subjectAstrophysicsen_US
dc.subjectAstrophysical magnetismen_US
dc.subjectInterstellar filamentsen_US
dc.subjectMilky Way magnetic fieldsen_US
dc.titleA comparison of multi-phase magnetic field tracers in a high-galactic latitude region of the filamentary interstellar mediumen_US
dc.typeArticleen_US

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