Testing general relativity with the Event Horizon Telescope

By Dimitrios Psaltis. General Relativity and Gravitation, 2018

139 citations recorded by the source corpus.

The Event Horizon Telescope is a millimeter VLBI array that is taking the first horizon-scale pictures of the black hole in the center of the M87 galaxy and, in the near future, of the one in the center of the Milky Way. Measurements of the shape and size of the shadows cast by the black holes on the surrounding emission can test the cosmic censorship conjecture and the no-hair theorem and may find evidence for classical effects of the quantum structure of black holes. Observations of coherent structures in the accretion flows may lead to accurate measurements of the spins of the black holes and of other properties of their spacetimes. For Sgr A*, the black hole in the center of the Milky Way, measurements of the precession of stellar orbits and timing monitoring of orbiting pulsars offer complementary avenues to the gravitational tests with the Event Horizon Telescope.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/5dedef30a11ebcbcb0bd1883a8c73a953f34d882

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Citations in the corpus

Spontaneous scalarisation of charged black holes: coupling dependence and dynamical features (2019, background): “y 2019, is given in [4]. Another exciting piece of observational evidence comes from the near future release of the rst image of a BH shadow by the Event Horizon Telescope collaboration [5] - see e:g:[6,7] for recent reviews on BH shadows. BHs have a surprisingly small number of macroscopic degrees ”
Magnetically charged black holes from non-linear electrodynamics and the Event Horizon Telescope (2019, background): “At any rate, BH shadows appear to be an extremely promising arena for testing deviations from GR [24–28], and in particular violations of the no-hair theorem [29–31].”