There are a lot of epic and violent events in the universe, but few people are more dramatic than the black holes that tear the stars. Now, thanks to advanced computer simulations, scientists are most seeing what this universe’s catastrophe might actually be visible, and what sounds.
A team of astronomers led by theoretical astrophysicist Elias modeled a dramatic final millisecond before the majority of California Institute of Technology (CALTECH) in front of the neutron star.
resultpublished in the Astrophysical Journal Letters in March, suggests that at its final moments the star’s surface is as far apart as the ground during an earthquake. Just before the neutron star disappears into the deep by the black hole, some of the most powerful shockwaves known to us erupt outside with a kind of violent final farewell. The team’s work predicts the types of signals that this universe’s collision could pass through space. Earth and orbit show that astronomers are using one day to detect astronomers.
“Before this simulation, people thought you could crack neutron stars like an egg, but never asked if you could hear a crack,” most people said. statement. “Our job is, yes, we predict that we can hear or detect it as a radio signal.”
Simulations show that just before the neutron star is engulfed, the huge gravity of a black hole shears its surface, causing a violent star cue. This will spill over the star’s powerful magnetic field, creating a twist, and create what astronomers call Alfven’s waves. Then, just before the neutron stars are consumed by the black hole, these waves turn into powerful explosions, emanating a burst of radio waves known as fast radio bursts (FRB). Nevada’s upcoming network of 2,000 radio dishes The 2,000-dish network of 2,000-dish network may be sensitive enough to detect these final bursts one day, according to the statement.
After that, disappearing into a black hole, the simulation reveals that the “monster shock wave” is even stronger than that caused by the initial crack explosion outward. These waves can also create detectable radio signals, allowing astronomers to catch two different bursts from a single neutron starhole collision.
“This goes beyond the educated model of phenomenon.” Katerina ChatziioannouHe is an assistant professor of physics at Caltech and co-author of the new study, he said in the same statement. “This is a real simulation that includes all the related physics that occur when a neutron star breaks like an egg.”
Simulations also predict the possibility of forming rare, virtual objects known as black hole pulsars. Traditional pulsars rotate neutron stars that emit radiation beams, and new research suggests that black holes can temporarily mimic this behavior while consuming neutron stars.
This phenomenon is because, just as a black hole engulfs a neutron star, it is also drawn into the star’s magnetic field. “But we need to get rid of that,” most said in a statement. “What the simulation shows is that we do that in a way that actually forms a state that looks like a pulsar.”
These black hole pulsars last only a few seconds, but new research shows that they can emit short bursts of high-energy x-rays or gamma rays, the unmistakable signature of the star’s violent end.
The team praises the detailed simulation for the power of cutting-edge computing. They used Perlmutter, a supercomputer from Lawrence Berkeley National Laboratory in California, equipped with the same graphics processor used in video games, and GPU, an AI tool such as ChatGPT.
“We didn’t have enough computing power to numerically model these very complex physical systems in sufficient detail,” most said.
“All of a sudden, everything went well and it met our expectations.”
The research has been published Crossing two paper In an astrophysics letter.
