Comment on “A noninteracting low-mass black hole–giant star binary system”
Ed P. J. van den Heuvel, Thomas M. Tauris
Abstract
(Reports, 1 November 2019, p. 637) interpreted the unseen companion of the red giant star 2MASS J05215658+4359220 as most likely a black hole. We argue that if the red giant's mass is ~1 solar mass, its companion can be a close binary consisting of two main-sequence stars. This would explain why no x-ray emission is detected from the system.
Topics & Concepts
PhysicsBinary numberAstrophysicsStar (game theory)Solar massBinary starAstronomyX-ray binaryBinary systemBinary black holeRed giantBlack hole (networking)Theoretical physicsAstrophysical Phenomena and ObservationsStellar, planetary, and galactic studiesPulsars and Gravitational Waves Research