Relativistic redshift of the star S0-2 orbiting the Galactic Center supermassive black hole

• DOI: 10.1126/science.aav8137
• Publication Date: 2019-07-25T22:55:11Z
• Authors: Tuan Do; Aurelien Hees; Andrea Ghez; Gregory D. Martinez; Devin S. Chu; Siyao Jia; Shoko Sakai; Jessica R. Lu; Abhimat K. Gautam; Kelly Kosmo O’Neil; Eric E. Becklin; Mark R. Morris; Keith Matthews; Shogo Nishiyama; Randy Campbell; Samantha Chappell; Zhuo Chen; Anna Ciurlo; Arezu Dehghanfar; Eulalia Gallego-Cano; Wolfgang E. Kerze...; James E. Lyke; Smadar Naoz; Hiromi Saida; Rainer Schödel; Masaaki Takahashi; Yohsuke Takamori; Gunther Witzel; Peter Wizinowich
• Keywords: Center (category theory); Star (game theory); Black hole (networking)

Gravitational redshift in the Galactic Center General relativity predicts that light emitted by an object a strong gravitational field—for example, close to black hole—should be shifted longer wavelengths. This does not exist Newtonian theory of gravity. Do et al. monitored position and spectrum star S0-2 as it passed Sagittarius A*, supermassive hole at center Milky Way. Around closest part S0-2's 16-year orbit, they detected effect on its spectrum. These results are more consistent with general than gravity 5σ level. Science , this issue p. 664