Showing 2018 · gr-qcShow all

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gr-qc2018★ 121 cited

Detecting Lensing-Induced Diffraction in Astrophysical Gravitational Waves

Liang Dai, Shun-Sheng Li, Barak Zackay +2

Gravitational waves emitted from compact binary coalescence can be subject to wave diffraction if they are gravitationally lensed by an intervening mass clump whose Schwarzschild t…

gr-qc2018★ 6 cited

Quansinormal modes of static and spherically symmetric black holes with the derivative coupling

Shuang Yu, Changjun Gao

We investigate the quasinormal modes of a class of static and spherically symmetric black holes with the derivative coupling. The derivative coupling has rarely been paid attention…

gr-qc2018★ 6 cited

Exact solutions for spherically gravitational collapse around a black hole: the effect of tangential pressure

Sheng-Xian Zhao, Shuang-Nan Zhang

Spherically gravitational collapse towards a black hole with non-zero tangential pressure is studied. Exact solutions corresponding to different equations of state are given. We fi…

gr-qc2018★ 59 cited

Constraints on tidal charge of the supermassive black hole at the Galactic Center with trajectories of bright stars

Alexander F. Zakharov

As it was pointed out recently in Hees et al. (2017), observations of stars near the Galactic Center with current and future facilities provide an unique tool to test general relat…

gr-qc2018★ 31 cited

The black hole at the Galactic Center: observations and models

Alexander F. Zakharov

One of the most interesting astronomical objects is the Galactic Center. We concentrate our discussion on a theoretical analysis of observational data of bright stars in the IR-ban…

gr-qc2018★ 4 cited

Testing exterior spacetime of the neutron star via X-ray reflection spectroscopy

M. Ghasemi-Nodehi

The exterior geometry of a neutron star can be approximated by relativistic multipole moments of a parametrized metric using Ernst potential formalism. This spacetime can be tested…

gr-qc2018★ 55 cited

Constraining the range of Yukawa gravity interaction from S2 star orbits III: improvement expectations for graviton mass bounds

A. F. Zakharov, P. Jovanovic, D. Borka +1

Recently, the LIGO-Virgo collaboration discovered gravitational waves and in their first publication on the subject the authors also presented a graviton mass constraint as $m_g <…