The direct detection of gravitational waves from at least eleven sources during the past five years has offered spectacular confirmation of Einstein's model of gravity and space-time, while the modeling of these events has ...
Astronomy
Aug 3, 2020
2
182
Astronomers studying galaxy evolution have long struggled to understand what causes star formation to shut down in massive galaxies. Although many theories have been proposed to explain this process, known as "quenching," ...
Astronomy
Jul 16, 2020
2
328
The massive star that exploded to form the supernova known as Cassiopeia A most likely had a companion star that has yet to be spotted, a spectroscopic analysis by RIKEN astrophysicists suggests. This will provide fresh impetus ...
Astronomy
Jul 3, 2020
0
239
Through simulations of a dying star, a team of theoretical physics researchers have found the evolutionary origin and the maximum mass of black holes which are discovered by the detection of gravitational waves.
Astronomy
Jul 1, 2020
5
7133
The revolution in our understanding of the night sky and our place in the universe began when we transitioned from using the naked eye to a telescope in 1609. Four centuries later, scientists are experiencing a similar transition ...
Astronomy
Jun 30, 2020
0
674
When the most massive stars die, they collapse under their own gravity and leave behind black holes; when stars that are a bit less massive die, they explode in a supernova and leave behind dense, dead remnants of stars called ...
Astronomy
Jun 23, 2020
20
1390
Most massive stars are born in binaries (and sometimes triples, quadruples, and so on). As stars age, they grow larger in size by a hundred-fold or even thousand-fold expansion. When stars in binaries expand, parts of them ...
Astronomy
Jun 16, 2020
0
7
A team of scientists, including Chief Investigator Ilya Mandel from the ARC Centre of Excellence for Gravitational Wave Discovery (OzGrav) at Monash University, recently studied what happens to rotating massive stars when ...
Astronomy
Jun 11, 2020
1
511
Over the past two decades, astronomers have concluded that most, if not all, galaxies host massive black holes at their centers—and the masses of a black hole and its host galaxy are correlated. But how are the two connected? ...
Astronomy
May 21, 2020
7
468
Many galaxies far more active than the Milky Way have enormous twin jets of radio waves extending far into intergalactic space. Normally these go in opposite directions, coming from a massive black hole at the centre of the ...
Astronomy
May 8, 2020
0
2211
