I couldn't find a multitude of measurements to get an idea of what an average finding is, but assuming it lies somewhere about in the middle (22.5 solar masses), it's fairly likely to become a black hole. VY Canis Majoris: Mass is between 15 and 30 solar masses. Barring newer models that suggest that lower mass stars can in special circumstances upon core collapse become black holes, Betelgeuse will likely end up as a neutron star. If the background is warmer it will grow slowly until the temperature drops low enough for the hole to start to evaporate. Most models predict (and observations thus far back this up) that a star of 20 solar masses or less will end up as a neutron star with a mass of between ~1.5 (the Chandrasekhar limit) and ~3 (The Oppenheimer-Volkov limit the value of this one is nowhere as precise as the former, and depending on your choice of vallue, the initial mass earlier can change too).īetelgeuse: Mass is between 7.7 and 20 solar masses, with most measurements lying somewhere in between.
How do I Become an Astronomer/What do Astronomers Do?Īdvice for First Time Telescope Buyers by Joe Roberts "We are a way for the cosmos to know itself." "Astronomy compels the soul to look upward, and leads us from this world to another." If one of the stars in such a binary system evolves into a black hole, then the system can sometimes be observed as a bright X-ray source. And other red giants have not demonstrated such behavior so far.For sub rules, please visit the redesigned reddit page. After all, for decades of watching it, they have not seen anything like it. The drop in Betelgeuse’s brightness continues to remain a mystery to scientists.
For example, an explosion could occur on it and, together with tidal inflation, this could really cause a grandiose dimming. However, scientists have suggested that the black hole could cause other effects on the surface of the giant star. They created a computer model of this process, but it showed that from such a passage, the deformation of the star’s atmosphere would be too weak to lead to a 60 percent drop in brightness. This was one that astronomers tried to explain the dimming of Betelgeuse. And we definitely noticed most of these objects. But for this, its mass must be comparable to Betelgeuse itself. The reason for such inflating may be the inflow forces from an object moving nearby. Therefore, any uneven inflating of them in our direction will inevitably lead to a decrease in its brilliance. Black HoleĪs with any red giant, the outer layers of Betelgeuse’s atmosphere are extremely thin and strongly cooled compared to the interior of the star. There they suggested that its dimming could have been caused by some large object passing near the star. So we will have to wait for its explosion for a long time.īut recently a group of astronomers published an article on Betelgeuse in the Monthly Notices of the Royal Astronomical Society. Moreover, recent studies of ancient texts have shown that Betelgeuse turned into a red giant less than 2 thousand years ago. So far, there are no signs that it is about to shed its shell. For some time, it has been considered proven that the cause of the blackout was a gas cloud that escaped from the surface of the star itself. Since that time, scientists have been looking for an explanation of what it was.
However, several months have passed and the luminosity of Betelgeuse has recovered. When its luminosity began to decrease rapidly at the end of 2019, many scientists assumed that the most intensive stage of this process had begun. This is a red giant that has almost exhausted its hydrogen fuel and is preparing to shed its shell and begin to turn into a white dwarf. Source: starwalk.space What overshadowed Betelgeuseīetelgeuse is the brightest star in the constellation Orion. Now there is a theory that it was caused by a black hole that passed near the star. However, over time, its luminosity recovered and scientists began to think about the cause of this phenomenon. When the Betelgeuse star began to fade rapidly in 2019, many thought that it would soon flare up as a supernova.
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