For the first time, magnetic star fields were included in the model being created. This showed how the stars in the core of our galaxy react to too close a deviation to the black hole-monster.
Since the supermassive black hole is so close to us, we can still find out a lot about Sagittarius A * (Sgr A *) - the features in the center of the Milky Way.
While astronomers are working to maximize their knowledge of this environment, the new article responds to what happens to young highly magnetized stars in the vicinity of Sgr A *. For the first time, the magnetic field of the stars was included in the simulation, where a black hole tidal invades a star (it is stretched).
“Magnetic fields are harder to model,” said astrophysicist James Guillochon. It used to be very difficult to put magnetic fields in context with other influences on stars, for example, gas pressure and gravity. This is especially true of the border or stellar atmosphere.
The model showed: if a star gets a “lightning strike” from a black hole, it will survive and its magnetic field will become more powerful (by a factor of about 30). But if it is at a dangerously close distance, then it will be destroyed by tidal forces, but the magnetic field will retain its strength.
Hubble Infrared Image. On it is the center of the Milky Way galaxy. The inset displays X-rays in the area around Sagittarius A *, a supermassive black hole. “Subsequently, we can see highly magnetized stars in the nuclei of galaxies,” Guillochon added. “We also expect that this will affect the result of the outbreak, which is due to star destruction. Half of the stellar matter seeps into the black hole, which generates a flash of light with a capacity of 1-10 billion of the potential of the sun. ”
In theory, a similar event should be seen in our galaxy. But Guillochon says it happens about once every 10,000 years. Fortunately, the stream of the destroyed star is preserved for centuries, fueling a black hole.
A few years ago, the scientist wrote an article about the gas cloud G2, flowing into the galactic center in 2014, which produced much less activity than expected. This indicates that G2 could be the result of the destruction of a red giant star whose gaseous envelope continues to fall into a black hole.
He suggested that G2-like clouds form due to “sticking” —cooling instabilities that will reproduce a similar phenomenon regularly every 10 years. Research co-author Michael McCourt suggested: when the material is strongly magnetized, its fields help stabilize the clouds and prevent them from disengaging. If the model is correct, then strongly magnetized clouds will pass near the black hole for the next several decades.