Kavli Affiliate: Lijing Shao
| First 5 Authors: Lijing Shao, Lijing Shao, , ,
| Summary:
Searching for radio pulsars orbiting around the Galactic centre black hole
(BH), Sagittarius A$^star$ (Sgr A$^star$), represents a holy grail goal for
large-area radio telescopes, in particular for the Square Kilometre Array.
Follow-up timing observation of such a PSR-Sgr A$^star$ binary system with an
orbital period $lesssim O(1,rm year)$ will bring forward a handful of new
tests on different aspects of fundamental physics that are barely accessible
with other means. However, mass perturbation in the Galactic centre harms the
gravitational cleanness of PSR-Sgr A$^star$ systems. In order to flexibly
account for perturbations, a numerical pulsar timing model is gradually being
built, which can be used to probe the spacetime around Sgr A$^star$ BH and
study the nature of dark matter.
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