Today’s news: Space explosions reveal a new form of “the dying...

Today’s news: Space explosions reveal a new form of “the dying...
Today’s news: Space explosions reveal a new form of “the dying...
A new study has uncovered evidence of explosions from dead stars colliding with living stars, a possible clue to a new type of supernova.

Supernovas are massive explosions that occur when stars are dying, and these explosions can briefly outperform all other suns in these stars’ galaxies, making them visible.

For decades, researchers have known of two main types of supernovae. Large stars with more than 10 times the mass of the Sun collapse into their centers when they burn up all their fuel, causing the outer layers to explode, leaving behind stellar remnants such as a neutron star or a black hole.

The second type occurs when stars less than 8 times the mass of the Sun burn out over time, leaving behind a dense core known as a white dwarf. These remnants can draw fuel into themselves from companion stars until they explode in a thermonuclear explosion.

However, in the new study published online September 2 in the journal Science, scientists suggest other types of supernovae.

When most stars greater than 8 solar masses are born in orbits close to their companion stars, the heaviest members of these pairs may die and become “supernovae,” leaving behind a neutron star or black hole that could theoretically collide toward its partner and cause an explosion, they said. Supernova.

“This is a new class of supernovae,” study lead author Dillon Dong, an astrophysicist at the California Institute of Technology in Pasadena, US, told Profund Space.

Using data from the Very Large Array of the Sky Survey (VLASS), a project that scans the night sky for radio bursts, the researchers detected an extremely bright glow from radio waves, dubbed VT J121001 + 4959647, which occurred in 2017.

And this explosion, they found, was “associated with the largest radioactive supernova ever discovered.” from the emission of radio signals.

“The precursor star underwent a bout of volcanic mass loss, which resulted in more than the Sun’s mass being expelled from its atmosphere,” says Dong.

Astronomers point out that the radio explosion occurred when the star exploded in a supernova, with debris from the explosion colliding with the surrounding gas shell, setting off a burst of radio waves.

Then the scientists examined previous X-ray data, and found that in 2014, X-ray jets erupted from roughly the same place where they found the radio waves (VT J121001 + 4959647) and suggest that these jets occurred when a star smashed into a supernova, leaving behind a star The dead star cut off the gas from its companion, resulting in the formation of a dense gas crust, and then a radioluminescence after the dead star collided with its surviving partner.

“As a neutron star or spiral black hole enters, it’s expected to break up a lot of the star’s atmosphere and eject it to great distances,” Dong says.

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