“Death from spaghetti”: The last moments of a star lost in a black hole



In the center of a distant galaxy in the constellation of Eridanus, a star in the boy of the Sun had the misfortune to get too close to a monstrous black hole. Astronomers have just seen it die due to a phenomenon called spaghetti – and yes, that is the official scientific term. Anything approaching a black hole is in danger of turning into spaghetti due to its extreme gravitational field: the side of the object facing the cosmos. It receives much more traction from the opposite side, which deforms the object into a thread that eventually breaks. Although the term “spaghetti” is perfectly tested, the phenomenon is also called “tidal disturbance” (tides are due to the fact that the side A new study presented in the Monthly Notices of the Royal Astronomical Society examines the closest tidal disturbance recorded to date, although the Earth is facing the Sun or the Moon is receiving a stronger gravitational pull than the opposite side. its distance from Earth reaches 250 million light-years. “The idea that a hole ‘sucks’ a nearby star sounds like science fiction. And yet, this is exactly what happens in tidal events, “said Matt Nichols of the University of Birmingham, the first author of the paper. Astronomers knew that swallowing material from a black hole creates strong glows: as it swirls around the black the material is stretched and heated due to friction, at which point it emits radiation. This energy is emitted into jets emanating from the poles of the black hole, and becomes visible as a strong glow to observers who happen to be in the path of the jets. In most cases, clouds of dust and gas around the black hole hide the glow from telescopes on Earth. This time, however, the researchers were lucky. The glow was detected by ground-based instruments, and the research team rushed to point the powerful Southern Observatory (ESO) telescopes in Chile at this point in the sky (the constellation Eridanus is not visible from the northern hemisphere). reveals that clouds of material that often block the view of a black hole are in fact remnants of her last meal. “We found that when a black hole devours a star, it can launch large amounts of material that blocks observations,” explains Samantha Otis, also of the University of Birmingham. The findings, the researchers say, could be used in the future for interpretation. In this case, the star was spaghetti through the black hole at the center of its galaxy. The victim is estimated to have initially had about the mass of the Sun, but lost half when the monster approached. Follow it on Google News and be the first to know all the news See all the latest News from Greece and the World, at



Source link

Leave a Reply

Your email address will not be published. Required fields are marked *