MG14 - Talk detail |
Participant |
Sotani, Hajime | |||||||
Institution |
National Astronomical Observatory of Japan - 2-21-1 Osawa - Mitaka - Tokyo - Japan | |||||||
Session |
BH4 |
Accepted |
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Order |
Time |
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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. |
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Pdf file |
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Session |
SN1-2 |
Accepted |
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Order |
Time |
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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. |
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Pdf file |
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