A dwarf satellite galaxy of the Milky Way would have a supermassive black hole

This is unheard of and calls into question the evolution model of galaxies and supermassive black holes. The dwarf galaxy Leo I orbiting the Milky Way will have a massive black hole like our Milky Way galaxy.

In the late 1960s, some researchers, including Martin Rees, but especially his colleagues and compatriotsastronomy British Donald Linden-Bell has argued that most large galaxies should take refuge at their centers supermassive black hole, This has mainly been the accepted thesis for at least 20 years, even though it still misses a definitive proof of the presence of objects with exactly an event horizon, consistent with the predictions of the theory of general relativity.

It was also observed that there was often a significant and constant relationship of proportionality between the two public The mass of supermassive black holes and their host galaxies, which most likely involve a common evolutionary mechanism. when galaxies like Galaxy where M87 There were dwarf galaxies, so they must also have black holes that are certainly massive, but less than what we can see in their hearts today.

The dwarf galaxies we know about To revolve around Everywhere’andromedae And there are also giant black holes in the Milky Way that are not of stellar origin? An answer exists today in the case of the Milky Way Lion I (Leo I). this is galaxy girl The circular that our . is part of local group and which is about 820,000 . lies on light year Galaxy K.

At McDonald’s Observatory, Harlan J. A team of astrophysicists have just published an article on the subject, using observations provided by an instrument called Virus-W on the Smith 2.7-meter telescope. The Astrophysical Journal, it can be freely accessed at arXiv,

A supermassive black hole with a mass of 3.3 million solar

The discovery of a black hole at the heart of Leo I comes as a surprise because it is almost as massive as our own Galaxy which contains about 4 million solar masses. Therefore it is not an intermediate mass black hole., We have never done anything like this before.

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Initially, it was about understanding the material better. dark matter by Leo I. as part of standard cosmological model one of the pioneers of Nobel Prize in Physics James Peebles, There must be many dwarf galaxies in which dark matter The orbits of larger galaxies like the Milky Way. Not so, studying the ones we know can provide us with information about the nature of dark matter, of which there are many. modeling, or help refute its existence. Leo I puzzled astrophysicists because it seemed to contain less dark matter than its cousins ​​orbiting the Milky Way.

So the researchers combined the data provided by the Virus-W tool with simulations. Computer to draw conclusions from the movements of Stars and measured the precise distribution and amount of dark matter in Leo I. The data actually show the existence of a central supermassive black hole of about 3.3 million solar masses in the dwarf galaxy. , which contradicts the general law of the relationship between. The mass of a massive black hole and the mass of its host galaxy.

Clearly, this is likely to change the evolution model of the size of supermassive black holes, and of course, galaxies. For example, this could mean that black holes with many billions of solar masses are the result of what? capture dwarf galaxies which merges into a larger galaxy, Fusion who will be with unionization from their massive black hole. In spite of everything, it is now believed that the main mechanism behind the evolution of these black holes comes from Accretion of Cold Filament Materials,

In any case, we’ll know more when we’ve studied other dwarf satellite galaxies more carefully, which would be many of the same dwarf galaxies.Southern hemisphere good goals for giant magellan telescope ,GMT) in present Construction In Chile, partially designed for this type of work.

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