19-21 February 2019
"Sapienza" University, Phys. Dept. Marconi
Europe/Rome timezone

Testing Gravity with pulsars at the Galactic Center

21 Feb 2019, 11:39
17m
Aula Amaldi ("Sapienza" University, Phys. Dept. Marconi)

Aula Amaldi

"Sapienza" University, Phys. Dept. Marconi

Rome
talk General Relativity and Cosmology General Relativity & Cosmology

Speaker

Prof. Mariafelicia De Laurentis (Università di Napoli Federico II)

Description

To date, the most precise tests of General Relativity have been achieved
through pulsar timing, albeit in the weak-field regime. Since pulsars are
some of the most precise and stable "clocks" in the Universe, present
observational efforts are focused on detecting pulsars in the vicinity of
supermassive black holes (most notably in the Galactic Centre), enabling
pulsar timing to be used as an extremely precise probe of strong-gravity
regime.
In this work, test-particle dynamics is described in general black-hole
spacetimes and used to study binary systems comprising a pulsar orbiting
a black hole. It is shown that, by adopting a fully general-relativistic
description of test-particle motion, independent of any particular theory
of gravity, observations of pulsars give reliable constraints on
alternative theories of gravity.

Primary author

Prof. Mariafelicia De Laurentis (Università di Napoli Federico II)

Co-authors

Ziri Younsi Yosuke Mizuno Luciano Rezzolla Oliver Porth

Presentation Materials