The final objective is to try to discern among all the possibilities that can generate an emission with the characteristics of the observed. After the detection, more than three years of research came to explore how the burst changes over time, including observations with other telescopes sensitive to different energies and with different instrumentation. Because that's how science works, which allows you to make hypotheses and discard them. Or, in more technical language, a burst or explosion that has occurred in the optical range (in the range in which our eyes see) and that is accompanied by emission in the infrared (which can capture, for example, James Webb) of long duration.īut let's go to the beginning, to the ZFT SLRN-2020 variable source and what it could be. We can say that ZFT SLRN-2020, according to the team that has just presented the results of their study in the scientific journal Nature, is a planet-eating star. We saw the sky as immutable, not evolving on a human scale, but thanks to technology and large databases, we learned to look differently at the universe. The ZTF scans the entire northern sky every other day and one of those days detected something unusual in one of the sky sources: what we now know as ZFT SLRN-2020. One of these time-domain observatories is the Zwicky Transient Facility (ZFT) which consists of a camera with an extremely wide field of view, since the sky is large, placed in a robotic telescope at the Palomar Observatory in San Diego (USA). More informationAnd will the world end in fire? On an astronomical scale we can predict the future of our planet There are many observatories dedicated to seeing how the sky changes in visible light, to which our eyes are sensitive, on short time scales: for example, ASAS, WASP and super-WASP, OGLE or PanSTARRS. And the type of instrumentation used is sensitive, for example, to detect asteroids, comets, transits of planets and explosions of all kinds. The astronomical events we try to capture range from supernova explosions to pulsating stars, novae, flare stars, active galactic nuclei, gamma-ray bursts or gravitational microlensing. To perform this kind of science we need to study whether objects in the sky change in milliseconds, minutes, days or detect possible variations in months. Variable phenomena are not easy to detect, as they are sporadic events that occur in the blink of an eye. We have baptized this new way of looking at time domain astronomy and is responsible for the detection of variable phenomena in the sky. But in recent years, thanks to the development of technology and large databases, we have learned to look differently at the universe. In astrophysics we have accustomed the general public to look at the sky as something immutable that does not evolve on a human scale that contrasts with the time scale of the millions or billions of years during which we know the evolution of galaxies and the stars that compose them occurs. But improbable does not mean impossible here we are on this planet to prove it, despite the accumulation of small probabilities that has made us viable billions of years after the Big Bang. Capturing a planet in the act of being devoured by a star is a very difficult feat to achieve due to the speed of the process.
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