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As we have had the opportunity to write several times, i black holes they are very particular celestial objects due to their nature. Complexes to observe, bend the laws of physics and give life to decidedly energetic events. The images processed in the past of M87 * and Sagittarius A * have entered history but still much, very much there is to understand in the Universe. In these days, for example, the discovery of the black hole closest to Earth never observed.
We would like to point out immediately that there is no danger for our Planet. However, this is an interesting discovery because it allows us to continue to increase the “catalog” of these celestial objects and to expand the studies on the matter. Researchers are thrilled with the result of the research that has brought it to life to a studio about the title “A Sun-like star orbiting a black hole” released on November 2. Here is the information that emerged from the observations.
The closest black hole to Earth has been discovered
Scientists employed theInternational Gemini Observatory also managed by the National Science Foundation (the same as the Arecibo radio telescope). The celestial object, called Gaia BH1has stellar mass and is located within the Milky Way. The survey was particularly complex as it is a black hole “sleepy” and therefore the part of the accretion disk is not easily observable. There distance from the Land is estimated at 1600 light years and therefore its interaction with our Planet is null.
THE black holes from stellar mass they are not so infrequent, so much so that it is estimated that inside the Milky Way there are about 100 million of them (with masses from 5 to 100 times that of our Sun). Despite the estimates, however, the observation is quite another thing considering that, as written above, those “active” (and therefore have emissions mainly in X-rays) are more easily identifiable. A very different speech is for those “sleepers”like the one covered by this news.
Gaia BH1 it has a mass of ten solar masses and is located in the constellation of Ophiuchus. The discovery was made possible thanks to the analysis of the movements of a companion star orbiting the black hole with a distance of about 1 au. Kareem El-Badry (astronomer in charge of the study) said “Although there have been many reported detections of systems like this, almost all of these findings have subsequently been disproved. This is the first unambiguous revelation of a Sun-like star in a large orbit around a stellar-mass black hole in our Galaxy. “. An example of what the scholar stated is the study announced in May 2020 and then refuted in March 2022. Now, however, things should be different.
The initial analysis of the binary system took place thanks to ESA’s Gaia satellite. The researchers noticed some irregularities in the star’s movement around a resulting body “Invisible”. At this point the Gemini telescope to measure the orbital period of the star and thus be able to deduce the mass of the second massive object.
The same El-Badry he also added “we could not find a plausible astrophysical scenario that could explain the observed orbit of the system that does not involve at least one black hole”. It also appears that the star that gave rise to Gaia BH1 it should have had a mass of 20 solar masses. However, it is not clear how the binary system evolved. For example, if the star that then first turned into a supergiant and then collapsed into a black hole had followed this path, he would have had to destroy his mate. To survive the orbit of this star detected by scientists, it would have to be different (less wide). For this we will need more data, other studies and new models to get a clearer idea of what could have happened.
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