Last June, a new supernova object was observed from the ATLAS telescope in Hawaii, but its maximum brightness was much higher and disappeared much faster than the usual supernova. These differences triggered alarm bells for astronomers, so they turned their attention to them and came to a conclusion it is the birth of a black hole,
Supernova is called a "cow" (a special name, but the explanation we will see now), and the 45 astronomers believe it is the first time a person hunts the moment the star dies to create a black hole. The research results were presented this week at the annual meeting of the American Astronomical Society in Seattle (Washington, United States) and will soon be published in the Astrophysical Journal.
Nothing was normal since his discovery (for the good)
We talk about the supernova when a massive star explodes or "dies", though a black hole or a neutron star originates from this explosionWe talked about them, for example, when amateur astronomer Víctor Buso discovered one by chance, which was important given the difficulty of finding them.
In this case, we observed an object with somewhat unusual behavior, which was called AT2018cow, shortly after the nickname "cow" (cow that's a cow in English). The cow is in CGCG 137-068 "just" 200 million light-years away from the Milky Way and looks at the constellation Hercules.
Cow was something special from the beginning because the closest supernova was detected, allowing astronomers to observe this with unprecedented details, as explained in National Geographic. We said that its maximum brightness was something extraordinary, and in fact it was registered brightness is ten times higher than the standard burst stars (detected by X-rays). Brightness, which also dims in days when the normal brightness of the supernova lasts for several weeks before it diminishes.
This has contributed to the fact that the waste emitted from the explosion was much smaller (and different composition) than expected, except that the radiation was not even expected. They even thought they were dealing with human mistakes, as Raffaella Margutti, director of the Northwestern University astrophysics, who catalogs the discovery as a "destination that's been waiting for years."
Raffaella Margutti, director of the team of astronomers, catalogs the discovery as "a goal that has been waiting for years"
In this way, they conclude that the "cow" is creating a black hole or a neutron star. Something like that until now it has not been observed shortly after birth, and this may represent a new class of objects within the existing category of "fast light transient objects".
Space and special cow
Stays for Explore the same cow, how its "central engine" works (ie the core, behind the observed impurities). It is considered a compact central engine that releases high-energy X-rays and is covered by an amorphous and asymmetrical mass of material from an explosion.
They think this unusual event can help astronomers better understand the physics of the black hole or a neutron star, so let's see if there is more knowledge of this particular cow or we know this phenomenon better.
Image | NASA / CXC / SAO