In a "rite of passage," the JAXA/NASA X-ray telescope XRISM has mapped in detail Cygnus X-3, a curious binary system with a ...

The Japan-led XRISM (X-ray Imaging and Spectroscopy Mission) observatory has captured the most detailed portrait yet of gases ...

Stellar-mass black holes typically form after a star goes supernova and collapses. However, the discovery of the first-ever triple black hole system, V404 Cygni, complicates that picture. This black ...

Astronomers have stumbled upon a pair of massive black holes in a distant galaxy that are triggering unusual bursts of light ...

In March 2021, astronomers observed a high-energy burst of light from a distant galaxy. Assigned the name AT 2021hdr, it was thought to be a supernova. However, there were enough interesting features ...

Scientists using observations from NASA's Neil Gehrels Swift Observatory have discovered, for the first time, the signal from a pair of monster black holes disrupting a cloud of gas in the center of a ...

When binary neutron stars or black holes swirl around each other, they constantly emit gravitational waves, which carry ...

However, a study published Oct. 23 in Nature has found that the black hole binary system V404 Cygni, which contains a black hole and a small star, has an additional friend — a second star that ...

Artistic illustration of OJ287 as a binary black hole system. The secondary black hole of 150 million solar masses moves around the primary black hole of 18 billion solar masses. A disk of gas ...

into a black hole, no mess, no fuss. The astrometry of V404 Cygni, with a Pan-STARRS image of the system, the trajectories of the stars in the field, and a zoom of the inner binary. (Burdge et al., ...