Skip to main content Accessibility help
×
Home

Magnetic Fields in the Milky Way Halo

Published online by Cambridge University Press:  05 March 2015

S. A. Mao
Affiliation:
Jansky Fellow, National Radio Astronomy Observatory, P.O. Box O, Socorro, NM 87801, USA email: mao@astro.wisc.edu Department of Astronomy, University of Wisconsin, Madison, WI 53706, USA
N. M. McClure-Griffiths
Affiliation:
CSIRO Astronomy and Space Science, Australia Telescope National Facility, PO Box 76, Epping, NSW 1710, Australia
B. M. Gaensler
Affiliation:
Sydney Institute for Astronomy, School of Physics, The University of Sydney, NSW 2006, Australia
J. C. Brown
Affiliation:
Department of Physics and Astronomy, and Institute for Space Imaging Science, University of Calgary, AB, Canada
C. L. van Eck
Affiliation:
Department of Physics and Astronomy, and Institute for Space Imaging Science, University of Calgary, AB, Canada
M. Haverkorn
Affiliation:
Department of Astrophysics, Radboud University, P.O. Box 9010, 6500 GL Nijmegen, The Netherlands
P. P. Kronberg
Affiliation:
Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, NM 87545, USA Department of Physics, University of Toronto, 60 St. George Street, Toronto, M5S 1A7, Canada
J. M. Stil
Affiliation:
Department of Physics and Astronomy, and Institute for Space Imaging Science, University of Calgary, AB, Canada
A. Shukurov
Affiliation:
School of Mathematics and Statistics, University of Newcastle, Newcastle upon Tyne, NE1 7RU, UK
A. R. Taylor
Affiliation:
Department of Physics and Astronomy, and Institute for Space Imaging Science, University of Calgary, AB, Canada
Corresponding
E-mail address:
Rights & Permissions[Opens in a new window]

Abstract

We present a study of the Milky Way halo magnetic field, determined from observations of Faraday rotation measure (RM) of extragalactic radio sources (EGS) in Galactic longitude range 100°–117° within 30° of the Galactic plane. We find negative median RMs in both the northern and southern Galactic hemispheres for |b|>15°, outside the latitude range where the disk field dominates. This suggest that the halo magnetic field towards the outer Galaxy does not reverse direction across the mid-plane. An azimuthal magnetic field at heights 0.8−2 kpc above/below the Galactic plane between the local and the Perseus spiral arm can reproduce the observed trend of RM against Galactic latitude. We propose that the Milky Way could have a halo magnetic field similar to that observed in M51.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2015 

References

Mao, S. A., McClure-Griffiths, N. M., Gaensler, B. M., Brown, J. C., van Eck, C. L., Haverkorn, M., Kronberg, P. P., Stil, J. M., Shukurov, A., & Taylor, A. R. 2012, ApJ 755, 21CrossRefGoogle Scholar

Full text views

Full text views reflects PDF downloads, PDFs sent to Google Drive, Dropbox and Kindle and HTML full text views.

Total number of HTML views: 0
Total number of PDF views: 91 *
View data table for this chart

* Views captured on Cambridge Core between September 2016 - 20th January 2021. This data will be updated every 24 hours.

Access
Hostname: page-component-76cb886bbf-kdwz2 Total loading time: 0.324 Render date: 2021-01-20T07:51:34.970Z Query parameters: { "hasAccess": "1", "openAccess": "0", "isLogged": "0", "lang": "en" } Feature Flags: { "shouldUseShareProductTool": true, "shouldUseHypothesis": true, "isUnsiloEnabled": true, "metricsAbstractViews": false, "figures": false, "newCiteModal": false }

Send article to Kindle

To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

Find out more about the Kindle Personal Document Service.

Magnetic Fields in the Milky Way Halo
Available formats
×

Send article to Dropbox

To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

Magnetic Fields in the Milky Way Halo
Available formats
×

Send article to Google Drive

To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

Magnetic Fields in the Milky Way Halo
Available formats
×
×

Reply to: Submit a response


Your details


Conflicting interests

Do you have any conflicting interests? *