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Astron. Astrophys. 356, 234-237 (2000)


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Flattening modulus of a neutron star by rotation and magnetic field

K. Konno, T. Obata and Y. Kojima

Department of Physics, Hiroshima University, Higashi-Hiroshima 739-8526, Japan

Received 28 October 1999 / Accepted 12 January 2000

Abstract

We calculated the ellipticity of the deformed star due to the rotation or magnetic field. These two effects are compared to each other within general relativity. It turned out that the magnetic distortion is important for recently observed candidates of magnetars, while the magnetic effect can be neglected for well-known typical pulsars.

Key words: relativity – stars: neutron – stars: rotation – stars: magnetic fields – methods: analytical

Send offprint requests to: K. Konno

© European Southern Observatory (ESO) 2000

Online publication: March 28, 2000

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