The subject in focus here is a hydrogen-depleted supergiant star in the Andromeda galaxy (M31), which produced a black hole without collapsing. Findings regarding the star and the unique ...

The explosions, which leave behind a black hole or a neutron star ... hydrogen-depleted supergiant star in the Andromeda galaxy (M31) failed to detonate as a supernova. The research, posted ...

Astronomers have witnessed a monster supermassive black hole erupting with a light-year-long jet traveling at one-third the ...

The Andromeda Galaxy, our nearest galactic neighbor, is a majestic spiral galaxy like the Milky Way. Let’s uncover some ...

Now that may sound big, but Sagittarius A* is small compared to other supermassive black holes. Take the one at the center of our neighbor the Andromeda galaxy, which has a diameter of 516 million ...

Using the XMM-Newton X-ray telescope, astronomers have witnessed a supermassive black hole already noted for its mysterious behavior demonstrating another strange phenomenon. The Massachusetts ...

Active galaxy—A galaxy with an unusually strong output of energy, thought to be powered by a supermassive black hole in its core. Andromeda Galaxy—The nearest large spiral galaxy to the Milky ...

I study stellar and gas dynamics near massive black holes, with applications to our Galactic center, the Andromeda (M31) nucleus and post-starburst galaxies. I'm also interested in the strange orbits ...