Second post-Newtonian motion in Simpson-Visser black-bounce spacetime

• DOI: 10.1088/1572-9494/adc18a
• Publication Date: 2025-03-18T03:48:01Z
• Authors: Bo Yang; Chunhua Jiang; Wenbin Lin
• Keywords: Black hole (networking)

Abstract In this paper, we present the second post-Newtonian solution for quasi-Keplerian motion of a test particle in regular Simpson-Visser black-bounce spacetime which has bounce parameter $a$. The obtained is formulated terms orbital energy, angular momentum, and black hole. We explicitly analyze leading effects parameter, dimensions length, on particle's orbit, including periastron advance period. Then, apply model to precessing OJ 287 determine upper limits dimensionless as $a/m =3.45\pm 0.01$, where $m$ mass Compared with bound given by star S2, our $a/m$ reduced one order magnitude, although limit $a$ still needs further improvement.