Quadrupole Moments of Rapidly Rotating Compact Objects in Dilatonic Einstein-Gauss-Bonnet Theory

Burkhard Kleihaus; Jutta Kunz; Sindy Mojica (Oldenburg; U.)

Quadrupole Moments of Rapidly Rotating Compact Objects in Dilatonic Einstein-Gauss-Bonnet Theory

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arxiv 1407.6884 v1 pith:2XE6OSVF submitted 2014-07-25 gr-qc

Burkhard Kleihaus , Jutta Kunz , Sindy Mojica (Oldenburg , U.) This is my paper · ORCID

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keywords quadrupoleegbdmomenttheoryblackdilatoniceinstein-gauss-bonnetholes

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abstract

We consider rapidly rotating black holes and neutron stars in dilatonic Einstein-Gauss-Bonnet (EGBd) theory and determine their quadrupole moments, which receive a contribution from the dilaton. The quadrupole moment of EGBd black holes can be considerably larger than the Kerr value. For neutron stars, the universality property of the $\hat I$-$\hat Q$ relation between the scaled moment of inertia and the scaled quadrupole moment appears to extend to EGBd theory.

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