Hostname: page-component-76fb5796d-vvkck Total loading time: 0 Render date: 2024-04-25T21:15:55.898Z Has data issue: false hasContentIssue false
  • English
  • Français

Structure of the Local Galactic Magnetic Field

Published online by Cambridge University Press:  19 July 2016

R. J. Rand  and
S. R. Kulkarni
R. J. Rand
Affiliation:
California Institute of Technology, 105-24 Pasadena, CA 91125
S. R. Kulkarni
Affiliation:
California Institute of Technology, 105-24 Pasadena, CA 91125

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We have modeled the local Galactic magnetic field using pulsar rotation measures (RMs), of which there are now about 200 available. The North Polar Spur has a significant effect on pulsar RMs. Using RMs of 116 pulsars nearer than 3 kpc, we find that the local field has a strength B0 = 1.6 ± 0.2 μG toward longitude lB =96° ± 4°, with a reversal of the field at a distance Dr = 600 ± 80 pc toward the inner Galaxy. Relaxing the 3 kpc distance restriction, we find that a concentric ring model with reversals is superior to a bisymmetric spiral model as a fit to the data.

Type
2. The Magnetic Field Structure of the Milky Way: The Meeting of Observation and Theory
Information
Symposium - International Astronomical Union , Volume 140: Galactic and Intergalactic Magnetic Fields , 1990 , pp. 44 - 46
Copyright
Copyright © Kluwer 1990 

References

Hamilton, P. A. and Lyne, A. G. 1987, M. N. R. A. S. 224, 1073.Google Scholar
Inoue, M. and Tabara, H. 1981, Publ. Astr. Soc. Jpn 33, 603 (IT).Google Scholar
Manchester, R. N. 1974, Ap. J. 188, 637 (M74).Google Scholar
Rand, R. J. and Kulkarni, S. R. 1989, Ap. J. 343, 760.Google Scholar
Simard-Normandin, M., and Kronberg, P. P. 1980, Ap. J. 242, 74 (SK).Google Scholar
Sofue, Y. and Fujimoto, M. 1983, Ap. J. 265, 722 (SF).Google Scholar
Thomson, R. C. and Nelson, A. H. 1980, M. N. R. A. S. 191, 863 (TN).Google Scholar
Vallée, J. P. 1984, Astr. Ap. 136, 373.Google Scholar