output
19922026
most citedFirst Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way

1.9k citations

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions
Showing 1997 · gr-qcShow all

5 papers · 2 filters

gr-qc1997★ 10 cited

Spherical scalar waves and gravity - red shift and backscattering

Edward Malec, Niall Ó Murchadha, Tadeusz Chmaj

This article investigates the interaction of a spherically symmetric massless scalar field with a strong gravitational field. It focuses on the propagation of waves in regions outs…

gr-qc1997★ 1 cited

Backscattering: an overlooked effect of General Relativity?

Edward Malec, Niall O'Murchadha

The total flux of outgoing radiation in a strong gravitational field decreases due to backscattering if the sources are close to an apparent horizon. It can cause detectable change…

gr-qc1997★ 10 cited

Necessary Conditions for Apparent Horizons and Singularities in Spherically Symmetric Initial Data

Jemal Guven, Niall O Murchadha

We establish necessary conditions for the appearance of both apparent horizons and singularities in the initial data of spherically symmetric general relativity when spacetime is f…

gr-qc1997★ 4 cited

Geometric Bounds in Spherically Symmetric General Relativity

Jemal Guven, Niall O Murchadha

We exploit an arbitrary extrinsic time foliation of spacetime to solve the constraints in spherically symmetric general relativity. Among such foliations there is a one parameter f…

gr-qc1997★ 66 cited

Late time behaviour of the maximal slicing of the Schwarzschild black hole

R. Beig, N. Ó Murchadha

A time-symmetric Cauchy slice of the extended Schwarzschild spacetime can be evolved into a foliation of the -region of the spacetime by maximal surfaces with the requireme…