[B]Giant black holes lurking in survey data
Last Updated on Monday, 08 October 2012 15:38  
Scientists at the University of Cambridge have used cutting-edge infrared surveys of the sky to discover a new population of enormous, rapidly growing supermassive black holes in the early Universe. The black holes were previously undetected because they sit cocooned within thick layers of dust. The new study has shown however that they are emitting vast amounts of radiation through violent interactions with their host galaxies. The team publish their results in the journal Monthly Notices of the Royal Astronomical Society.
The most extreme object in the study is a supermassive black hole called ULASJ1234+0907. This object, located in the direction of the constellation of Virgo, is so far away that the light from it has taken 11 billion years to reach us, so we see it as it appeared in the early universe. The monster black hole has more than 10 billion times the mass of the Sun and 10,000 times the mass of the supermassive black hole in our own Milky Way, making it one of the most massive black holes  [U]ever seen[/U].
[U]The research indicates that that there may be as many as 400 such giant black holes in the part of the universe that we can observe. [/U] "These results could have a [U]significant impact [/U]on studies of supermassive black holes" said Dr Manda Banerji, lead author of the paper. "Most black holes of this kind are seen through the matter they drag in. As the neighbouring material spirals in towards the black holes, it heats up. Astronomers are able to see this radiation and observe these systems."
"Although these black holes have been studied for some time, the new results indicate that some of the most massive ones may have so far been hidden from our view." The newly discovered black holes, devouring the equivalent of several hundred Suns every year, will shed light on the physical processes governing the growth of all supermassive black holes.[U] Supermassive black holes are now known to reside at the centres of all galaxies[/U]. [/B]
http://www.ras.org.uk/news-and-press/219-news-2012/2176-new-surveys-peer-through-dust-to-reveal-giant-supermassive-black-holes

[QUOTE]BETEP IIEPEMEH пишет:
Я не понял, что Вы хотели этим сказать. [/QUOTE]
Что ЧД [U]уже обязательный элемент [/U]массивных галактик.
[QUOTE]BETEP IIEPEMEH пишет:
Так вот, получается, хотя масса центрального объекта всего лишь порядка 10е6 солнечных масс, его минимальная плотность на пять порядков превышает плотность оного в NGC 4258. [/QUOTE]
 Не может плотность сверхмассивного объекта спиральной галактики превышать соответствующий параметр сейфертовской в сопоставимых величинах.