2023-07-09 11:49:09
Since the beginning of the universe and its continuous expansion, an endless number of impressive astronomical phenomena and planetary dimensions have arisen.
Events that might only have existed in our imagination, but that today we know are real and that many of these are a possible threat to the existence of various planets, including planet Earth, our home.
We have seen stars being born and dying, meteors that surround our solar system, supernovae, but nothing like what has been captured in recent times. As we well know, our galaxy, also known as the Milky Way, is one of many that exist in the infinite universe.
The Milky Way is characterized by having a supermassive black hole at the center, which was in a period of inactivity for a long time, at least until recently, when experts have discovered that this state of lethargy has ended.
Sagittarius A star, is the name of this huge black hole in the middle of our galaxy, which ended its inactivity regarding 200 years ago.
A CNRS team at the Strasbourg Astronomical Observatory in France, led by Frédéric Marin, were the ones who captured the echo of the awakening of Sagittarius A star, which is at least four million times larger than our own sun, as reported by the prestigious scientific journal Nature.
Before its 200-year state of quiescence, Sagittarius A, for a year, devoured the planets and stars in its path, this was at the beginning of the 19th century, and following that the black hole returned to its state of quiescence. stillness.
Sagittarius A; The black hole at the center of the Milky Way
Due to the immense distance between the black hole and the earth, the latter did not have any repercussions, none of the effects of this event reached our home planet… at least that was believed. Frédéric Marin and his team have been working together with the IXPE (Imaging X-ray Polarimetry Explorer) satellite of the National Aeronautics and Space Administration, or better known by its acronym in English, NASA.
Until this discovery, the polarization of X-ray light had not been captured with such precision, this time being a great advance, since it not only captured the light of the polarized X-rays of the event that occurred 200 years ago by Sagittarius A star, but also I also manage to determine the source.
Thanks to this satellite and the work of the researchers, they managed to establish that the event that occurred 200 years ago had an intensity at least a million times greater than what we can currently observe in this black hole.
To exemplify it, we can say that this event is equated to what if a hidden firefly suddenly began to shine as bright as our sun, and then returned to its normal state and to its hiding place.
The clouds of galactic molecules around Sagittarius A are brighter than they should be, reflecting X-rays ejected from the black hole 200 years ago.
Undoubtedly, these types of events are so large that it is not surprising that they have the full attention of experts who study the universe.
Sagittarius A star is practically extinct, but as they have recently discovered, this state of inactivity can be deactivated at any time, and this is what scientists are still working on, determining what physical mechanisms intervene for a black hole to change its state.
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