March 17, 2017

Artist's impression of the X9 system with the view from Chandra X-ray Observatory in the inset (Image X-ray: NASA/CXC/University of Alberta/A.Bahramian et al.; Illustration: NASA/CXC/M.Weiss)

An article published in the journal “Monthly Notices of the Royal Astronomical Society” describes a research on what appears to be a binary system including a star with the closest orbit around a black hole. A team of astronomers used NASA’s Chandra X-ray Observatory and NuSTAR space Telescope and the Australia Telescope Compact Array (ATCA) to observe this system called X9 concluding that the star, a white dwarf, takes 28 minutes to orbit the black hole.