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The magnetic enviro...
The magnetic environment of the Orion-Eridanus superbubble as revealed by Planck
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- Soler, J. D. (författare)
- Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany.
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- Bracco, Andrea (författare)
- Stockholms universitet,Nordiska institutet för teoretisk fysik (Nordita),Université Paris Diderot, France; CNRS, France; CEA/IRFU/SAp, France,Nordita SU; Univ Paris Diderot, CNRS, Lab AIM,Paris Saclay, CEA,IRFU,SAp, F-91191 Gif Sur Yvette, France.
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- Pon, A. (författare)
- Univ Western Ontario, Dept Phys & Astron, 1151 Richmond St, London, ON N6A 3K7, Canada.
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Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany Nordiska institutet för teoretisk fysik (Nordita) (creator_code:org_t)
- 2018-02-09
- 2018
- Engelska.
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Ingår i: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 609
- Relaterad länk:
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Abstract
Ämnesord
Stäng
- 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.
Ämnesord
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Nyckelord
- magnetic fields
- stars: formation
- ISM: bubbles
- ISM: individual objects: Orion-Eridanus Superbubble
- polarization
- Galaxy: disk
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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