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Pulsars as excellent probes for the magnetic structure in our Milky Way

Published online by Cambridge University Press:  20 March 2013

JinLin Han
JinLin Han*
Affiliation:
National Astronomical Observatories, Chinese Academy of Sciences, DaTun Road 20A, ChaoYang District, Beijing 100012, China email: hjl@nao.cas.cn
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Abstract

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In this invited talk, I first discuss the advantages and disadvantages of many probes for the magnetic fields of the Milky Way. I conclude that pulsars are the best probes for the magnetic structure in our Galaxy, because magnetic field strength and directions can be derived from their dispersion measures (DMs) and rotation measures (RMs). Using the pulsars as probes, magnetic field structures in the Galactic disk, especially the field reversals between the arms and interarm regions, can be well revealed from the distribution of RM data. The field strengths on large scales and small scales can be derived from RM and DM data. RMs of extragalactic radio sources can be used as the indication of magnetic field directions in the spiral tangential regions, and can be used as probes for the magnetic fields in the regions farther away than pulsars when their median RMs are compared with pulsar RMs.

Keywords

pulsars: generalISM: magnetic fieldsGalaxy: structure
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S291: Neutron Stars and Pulsars: Challenges and Opportunities after 80 years , August 2012 , pp. 223 - 228
Copyright
Copyright © International Astronomical Union 2013

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