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The magnetic environment of the Orion-Eridanus superbubble as revealed by Planck
Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany..
KTH. Univ Paris Diderot, CNRS, Lab AIM,Paris Saclay, CEA,IRFU,SAp, F-91191 Gif Sur Yvette, France..
Univ Western Ontario, Dept Phys & Astron, 1151 Richmond St, London, ON N6A 3K7, Canada..
2018 (English)In: Astronomy and Astrophysics, ISSN 0004-6361, E-ISSN 1432-0746, Vol. 609, article id L3Article in journal (Refereed) Published
Abstract [en]

Using the 353-GHz polarization observations by the Planck satellite we characterize the magnetic field in the Orion-Eridanus super-bubble, a nearby expanding structure that spans more than 1600 square degrees in the sky. We identify a region of both low dispersion of polarization orientations and high polarization fraction associated with the outer wall of the superbubble identified in the most recent models of the large-scale shape of the region. We use the Davis-Chandrasekhar-Fermi method to derive plane-of-the-sky magnetic field strengths of tens of mu G toward the southern edge of the bubble. The comparison of these values with existing Zeeman splitting observations of HI in emission suggests that the large-scale magnetic field in the region was primarily shaped by the expanding superbubble.

Place, publisher, year, edition, pages
EDP Sciences, 2018. Vol. 609, article id L3
Keywords [en]
magnetic fields, stars: formation, ISM: bubbles, ISM: individual objects: Orion-Eridanus Superbubble, polarization, Galaxy: disk
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:kth:diva-240180DOI: 10.1051/0004-6361/201732203ISI: 000429206000001Scopus ID: 2-s2.0-85041928938OAI: oai:DiVA.org:kth-240180DiVA, id: diva2:1272593
Note

QC 20181219

Available from: 2018-12-19 Created: 2018-12-19 Last updated: 2019-05-02Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
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  • vancouver
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More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
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Output format
  • html
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  • asciidoc
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