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20182026
most citedDark Energy Survey Year 3 Results: Cosmological Constraints from Galaxy Clustering and Weak Lensing

1.2k citations

Showing 2020 · gr-qcShow all

17 papers · 2 filters

gr-qc2020★ 25 cited

Modeling gravitational waves from exotic compact objects

Alexandre Toubiana, Stanislav Babak, Enrico Barausse +1

Exotic compact objects can be difficult to distinguish from black holes in the inspiral phase of the binaries observed by gravitational-wave detectors, but significant differences…

gr-qc2020★ 76 cited

EHT tests of the strong-field regime of General Relativity

Sebastian H. Völkel, Enrico Barausse, Nicola Franchini +1

Following up on a recent analysis by Psaltis et al. [Phys. Rev. Lett. 125, 141104 (2020)], we show that the observed shadow size of M87 can be used to unambiguously and robustl…

gr-qc2020★ 140 cited

Tidal Love Numbers of Kerr Black Holes

Alexandre Le Tiec, Marc Casals, Edgardo Franzin

The open question of whether a Kerr black hole can become tidally deformed or not has profound implications for fundamental physics and gravitational-wave astronomy. We consider a…

gr-qc2020★ 22 cited

Back-reaction in canonical analogue black holes

Stefano Liberati, Giovanni Tricella, Andrea Trombettoni

We study the back-reaction associated with Hawking evaporation of an acoustic canonical analogue black hole in a Bose-Einstein condensate. We show that the emission of Hawking radi…

gr-qc2020★ 39 cited

Dynamics of Screening in Modified Gravity

Lotte ter Haar, Miguel Bezares, Marco Crisostomi +2

Gravitational theories differing from General Relativity may explain the accelerated expansion of the Universe without a cosmological constant. However, to pass local gravitational…

gr-qc2020★ 377 cited

The TianQin project: current progress on science and technology

Jianwei Mei, Yan-Zheng Bai, Jiahui Bao +103

TianQin is a planned space-based gravitational wave (GW) observatory consisting of three earth orbiting satellites with an orbital radius of about . The satellites w…

gr-qc2020★ 28 cited

K-dynamics: well-posed 1+1 evolutions in K-essence

Miguel Bezares, Marco Crisostomi, Carlos Palenzuela +1

We study the vacuum Cauchy problem for K-essence, i.e. cosmologically relevant scalar-tensor theories that involve first-order derivative self-interactions, and which pass all exis…

gr-qc2020★ 41 cited

Bayesian Metric Reconstruction with Gravitational Wave Observations

Sebastian H. Völkel, Enrico Barausse

Theories of gravity extending or modifying general relativity typically allow for black hole solutions different from the Schwarzschild/Kerr geometries. Electromagnetic observation…

gr-qc2020★ 215 cited

Spin-induced black hole spontaneous scalarization

Alexandru Dima, Enrico Barausse, Nicola Franchini +1

We study scalar fields in a black hole background and show that, when the scalar is suitably coupled to curvature, rapid rotation can induce a tachyonic instability. This instabili…

gr-qc2020★ 10 cited

Causal hierarchy in modified gravity

Raul Carballo-Rubio, Francesco Di Filippo, Stefano Liberati +1

We investigate the causal hierarchy in various modified theories of gravity. In general relativity the standard causal hierarchy, (key elements of which are chronology, causality,…

gr-qc2020★ 37 cited

On Black Hole Temperature in Horndeski Gravity

K. Hajian, S. Liberati, M. M. Sheikh-Jabbari +1

It has been observed that for black holes in certain family of Horndeski gravity theories Wald's entropy formula does not lead to the correct first law for black hole thermodynamic…

gr-qc2020★ 15 cited

Electromagnetic tests of horizonless rotating black hole mimickers

Anna Zulianello, Raúl Carballo-Rubio, Stefano Liberati +1

The interest in the implications that astrophysical observations have for the understanding of the structure of black holes has grown since the first detection of gravitational wav…

gr-qc2020★ 111 cited

Detecting scalar fields with Extreme Mass Ratio Inspirals

Andrea Maselli, Nicola Franchini, Leonardo Gualtieri +1

We study Extreme Mass Ratio Inspirals (EMRIs), during which a small body spirals into a supermassive black hole, in gravity theories with additional scalar fields. We first argue t…

gr-qc2020★ 42 cited

Tests of general relativity with stellar-mass black hole binaries observed by LISA

Alexandre Toubiana, Sylvain Marsat, Enrico Barausse +2

We consider the observation of stellar-mass black holes binaries with the Laser Interferometer Space Antenna (LISA). Preliminary results based on Fisher information matrix analyses…

gr-qc2020★ 3 cited

Asymptotic horizon formation, spacetime stretching and causality

Carlos Barceló, Valentin Boyanov, Raúl Carballo-Rubio +1

In this work we analyse asymptotically flat, spherically symmetric spacetimes in which an event horizon is present without any trapped surfaces. We identify two types of such space…

gr-qc2020★ 34 cited

Numerical investigation of plasma-driven superradiant instabilities

Alexandru Dima, Enrico Barausse

Photons propagating in a plasma acquire an effective mass , which is given by the plasma frequency and which scales with the square root of the plasma density. As noted previous…

gr-qc2020★ 401 cited

Prospects for Fundamental Physics with LISA

Enrico Barausse, Emanuele Berti, Thomas Hertog +318

In this paper, which is of programmatic rather than quantitative nature, we aim to further delineate and sharpen the future potential of the LISA mission in the area of fundamental…