Research Article
Magnetic Dipole and Quadrupole Interaction Fields of Neutron Star
Gemechu Muleta Kumssa*
,
Legesse Wetro Kebede
Issue:
Volume 11, Issue 4, December 2024
Pages:
92-105
Received:
26 July 2024
Accepted:
3 September 2024
Published:
31 October 2024
DOI:
10.11648/j.ajaa.20241104.11
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Abstract: Neutron stars (NSs) are rapidly rotating entities, spinning at approximately 104 Hz, and possess extremely strong magnetic fields, ranging from 1013 to 1014 Gauss. These compact objects, characterized by a radius of about 10 kilometers and a density of 1013−14, gcm−3 are formed as a result of supernova explosions that mark the end of the life cycles of massive stars. Observations of electromagnetic emissions associated with curvature radiation from well-known pulsars, such as the Crab and Vela pulsars, provide compelling evidence that the magnetic field configuration near the surfaces of these neutron stars deviates significantly from the traditionally anticipated pure dipole structure. Researchers now propose that the inclusion of non-dipolar components in the magnetic field may address this longstanding discrepancy. Furthermore, the arrangement of magnetic field lines plays a crucial role in determining the characteristics and geometry of accretion discs surrounding neutron stars in binary systems. This study has focused on elucidating the geometry of the combined dipole and quadrupole magnetic field lines. In idealized scenarios, the magnetic field lines in proximity to these compact objects are typically closed; however, they may become open at greater distances due to interactions with external magnetic fields or the stress energy generated by other sources, including the accretion discs.
Abstract: Neutron stars (NSs) are rapidly rotating entities, spinning at approximately 104 Hz, and possess extremely strong magnetic fields, ranging from 1013 to 1014 Gauss. These compact objects, characterized by a radius of about 10 kilometers and a density of 1013−14, gcm−3 are formed as a result of supernova explosions that mark the end of the life cycle...
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