15–19 Jun 2015
Hotel Mercure Buda, Budapest
Europe/Budapest timezone
Have a safe trip back, please send us your photos!

On the tidal Love numbers of rotating neutron stars

16 Jun 2015, 15:40
25m
Conference Room A (Hotel Mercure Buda)

Conference Room A

Hotel Mercure Buda

Speaker

Dr Leonardo Gualtieri (Dipartimento di Fisica, "Sapienza" Università di Roma)

Description

Tidal Love numbers carry valuable information on the inner structure of a neutron star, and on its equation of state. This information could be extracted, by IInd and IIIrd generation gravitational wave detectors, from the gravitational wave signal emitted by coalescing neutron star-neutron star binaries. Up to now, the theoretical modelling and computation of Love numbers has been limited to static, spherically symmetric objects. We want to compute the Love numbers of rotating neutron stars. To this aim, using a perturbative approach, we have studied the solutions of Einstein's equations describing a spinning compact object distorted by an axisymmetric tidal field. We have considered black hole solutions up to second order in the rotation rate, and neutron star solutions up to first order in the rotation rate, finding out the corrections to Love numbers due to rotation. Our preliminary results suggest that in the case of neutron stars, rotation may give a significant contribution to the tidal Love numbers, and to the mass quadrupole.

Primary author

Dr Leonardo Gualtieri (Dipartimento di Fisica, "Sapienza" Università di Roma)

Co-authors

Dr Andrea Maselli (Georgia Tech, Atlanta, US) Dr Paolo Pani ("Sapienza" University of Rome) Prof. Valeria Ferrari ("Sapienza" University of Rome)

Presentation materials