The energy spectrum and periodic fluctuations of the X-rays, recorded by the INTEGRAL satellite, suggest they are coming from
young binary star systems in which a neutron star is stealing matter from its massive companion.
A near - infrared color - composite image of
the young binary star system, in which the gravitational pull of the fainter, lower - mass companion (seen on the left) drives two beautiful spiral arms in the gas - rich disk of the primary star.