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Evolution of Multipolar Magnetic Fields in Isolated Neutron Stars and its effect on Pulsar Radio Emission

D. Mitra·S. Konar·D. Bhattacharya·A. V. Hoensbroech·J. H. Seiradakis·R. Wielebinski
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Abstract

The evolution of the multipolar structure of the magnetic field of isolated neutron stars is studied assuming the currents to be confined to the crust. Lower orders ($\le 25$) of multipole are seen to evolve in a manner similar to the dipole suggesting little or no evolution of the expected pulse shape. We also study the multifrequency polarization position angle traverse of PSR B0329+54 and find a significant frequency dependence above 2.7 GHz. We interpret this as an evidence of strong multipolar magnetic field present in the radio emission region.

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D. Mitra, S. Konar, D. Bhattacharya, A. V. Hoensbroech, J. H. Seiradakis, R. Wielebinski. 1999-11-05. Evolution of Multipolar Magnetic Fields in Isolated Neutron Stars and its effect on Pulsar Radio Emission. https://arxiv.org/abs/astro-ph/9911085

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