Testing strong-field gravity with pulsars and GWs

The validity of Einstein’s general theory of gravity (GR) was verified to extreme precision in the Solar System. However, due to the slow velocity and weak field in the Solar System, the tests are akin to testing the first linear term of a fully nonlinear function f(x) around x=0. There exist alternative gravity theories that predict large deviations from GR, while satisfying all tests in the weak field. Objects like neutron stars and black holes, which are strongly self-graviting bodies, probe into the fully nonlinear strong-field regime. I will review important tests to strong-field gravity from pulsar timing and gravitational-wave detectors, and point out the complementarity of two methods in various aspects.

Speaker: 
Lijing Shao(邵立晶)
Speaker Introduction: 

Dr. Lijing Shao obtained his PhD degree on Theoretical Physics from Peking University, Beijing China (2015). From 2015 to 2017, he was a junior scientist in the Max Planck Institute for Gravitational Physics (Albert Einstein Institute), Potsdam Germany. Since September 2017, he is a scientist staff in the Max Planck Institute for Radio Astronomy, Bonn Germany.

Place: 
KIAA-PKU Auditorium
Time: 
Thursday, December 21, 2017 - 2:00pm to 3:00pm