Static Spherically Symmetric Black Holes in Weak f(T)-Gravity

Autor: Christian Pfeifer, Sebastian Schuster

Publikováno v: Universe, Vol 7, Iss 5, p 153 (2021)

With the advent of gravitational wave astronomy and first pictures of the “shadow” of the central black hole of our milky way, theoretical analyses of black holes (and compact objects mimicking them sufficiently closely) have become more importan

Externí odkaz: https://doaj.org/article/07bd5c0897b545b3b77322c5a6c1f167

Causality constraints in Quadratic Gravity

Autor: Rajes Ghosh, Alok Laddha, Jose D. Edelstein, Sudipta Sarkar

Publikováno v: Journal of High Energy Physics, Vol 2021, Iss 9, Pp 1-17 (2021)
Journal of High Energy Physics

Classifying consistent effective field theories for the gravitational interaction has recently been the subject of intense research. Demanding the absence of causality violation in high energy graviton scattering processes has led to a hierarchy of c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::514604fe1dc4d50262f97c00995d2f1f
https://doaj.org/article/a86d766d555e4925b2b0ad5969c3302a

Tests of weak equivalence principle with the gravitational wave signals in the LIGO–Virgo catalogue GWTC-1

Autor: Gang Wang, Wen-Biao Han, S. L. Yang

Publikováno v: Monthly Notices of the Royal Astronomical Society: Letters. 499:L53-L57

The weak equivalence principle (WEP) is the cornerstone of gravitational theories. At the local scale, WEP has been tested to high accuracy by various experiments. On the intergalactic distance scale, WEP could be tested by comparing the arrival time

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0f78440fef4a9ec2058fe9d985a02fa3
https://doi.org/10.1093/mnrasl/slaa143

A Shapiro delay detection in the pulsar binary system PSR J1811–2405

Autor: Lucas Guillemot, Ewan Barr, Ismaël Cognard, Michael Kramer, D. J. Champion, Gilles Theureau, Cherry Ng, Paulo C. C. Freire

Publikováno v: Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2020, 493 (1), pp.1261-1267. ⟨10.1093/mnras/staa337⟩

This paper presents the first detection of Shapiro delay from the binary millisecond pulsar PSR J1811–2405. We report a 11σ measurement of the orthometric amplitude, h3 = 6.8(6) × 10−7, and a 16σ measurement of the orthometric ratio, ς = 0.81

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c26bbff7a192d49df25d6b0d1c93a564
https://doi.org/10.1093/mnras/staa337

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