Pulsar's Magnetic Field Decay Due to Photon Emissions
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Date
2017-12-05
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Addis Ababa University
Abstract
Now a days there is no clear understanding of how pulsar's magnetic _eld decays.
This is the motivation behind the development of this particular model for pulsar _eld
dissipation. The work will be based on previous work in which it was shown that spinning
polarization charges are the most likely sources of Neutron Star (NS) magnetic _eld.
These _elds were indicated to be internal temperature dependent. Therefore, they are
expected to decay as a result of cooling the NS interior. The present model for _eld
decay is strongly linked to the long term (1-10 billion) yrs cooling of the NS core due
to neutrino and photon emissions. Magnetic decay laws are formulated corresponding to
each of the neutrino and photon branches of a standard NS cooling curve. So that this
thesis work intends to show the decay of pulsar magnetic _eld due to photon emission.
There after, magnetic _eld decays as a result of photon emission will be prominent for
about 10 billion yrs. We will derive the magnetic _eld decay law and investigate how this
law could be consistant with observations.
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Keywords
Pulsar's Magnetic, Field Decay Due to Photon Emissions, Neutron Star, Internal Composition of NS