Talk detail

Participant	Sotani, Hajime
Institution	National Astronomical Observatory of Japan - 2-21-1 Osawa - Mitaka - Tokyo - Japan

Session	BH4	Accepted		Order	Time
Talk	Oral abstract	Title	Prospect For Observational Discriminant Of The Gravitational Theories
Coauthors
Abstract	We focus on Eddington-inspired Born-Infeld gravity as a modified theory of gravity, and consider the prospect for observational discriminant of it from general relativity. We are successful to show that the coupling constant in the theory can be determined in principle via the terrestrial measurements of the neutron skin thickness of ${}^{208}$Pb together with the astronomical observations of the radii of $0.5M_¥odot$ neutron stars.
Pdf file

Session	SN1-2	Accepted		Order	Time
Talk	Oral abstract	Title	Identifications Of Quasi-Periodic Oscillations Observed In Soft-Gamma Repeaters With Crustal Torsional Oscillations
Coauthors
Abstract	The quasi-periodic oscillations discovered in soft-gamma repeaters are considered due to the phenomena strongly associated with the oscillations of central objects, i.e., the neutron star oscillations. In order to explain the frequencies of the observed quasi-periodic oscillations, we focus on the crustal torsional oscillations in neutron stars, where we also take into account the effect of electron screening. Then, we are successful to constrain the density dependence of the nuclear symmetry energy ($L$), identifying the observed frequencies as the crust torsional oscillations with various angular indices.
Pdf file