Uncovering black holes hiding in a globular cluster
A Milky way star cluster seems to contain more than the name suggests. How do astronomers find black holes hiding amongst stars?
Tidal Tugs Shed Light on Binary Companions
How can tides help us find hidden compact companions and yield detailed physics on stellar binaries?
Where can Black Holes that “should not exist” live?
It is common knowledge that nothing in the universe can escape a Black Hole. But are there places in the universe from which a Black Hole cannot escape?
Finding a Supermassive Black Hole’s Stellar-Mass Friends
An archival X-ray search reveals that supermassive black holes at the center of galaxies may be surrounded by stellar-mass black hole companions.
Through the Lenses of Black Holes
Looking for something you cannot see, for example black holes, are tricky. The bending of light provides a solution.
Two Winds
In today’s paper, Rezzolla and Kumar present a solution to the x-ray afterglow problem for the short gamma ray burst model. They show that x-rays can glow steadily for hours after the initial gamma ray emission due to the interactions of a slow and a fast wind.