MG13 - Talk detail |
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Participant |
Frieben, Joachim | |||||||
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Institution |
Max-Planck-Institut Für Gravitationsphysik - Am Muhlenberg 1 - Golm - Brandenburg - Germany | |||||||
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Session |
SN3 |
Accepted |
Yes |
Order |
5 |
Time |
20' | |
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Talk |
Oral abstract |
Title |
Distortion of neutron stars with a toroidal magnetic field | |||||
| Co-authors | Luciano Rezzolla | |||||||
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Abstract |
We have studied effects of rotation and a toroidal magnetic field on relativistic stars. Non-rotating models admit arbitrary levels of magnetization accompanied by an unlimited growth of size and quadrupole distortion. Moreover, rotating models reach the mass-shedding limit at smaller angular velocities corresponding to the larger radius induced by the magnetic field and admit a classification of prolate-prolate, prolate-oblate, and oblate-oblate with respect to quadrupole distortion and surface deformation. We have derived empirical distortion coefficients which allow to compute both quantities by means of a simple formula. Previous Newtonian estimates exceed the quadrupole distortion by about a factor of five proving them to be inadequate to describe relativistic objects like neutron stars. |
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