Saturday, August 13, 2016

Russian telescope recorded the birth of a black hole – The Russian Times

The new telescope MMT mounted Kazan Federal University in the Astrophysical Observatory in Karachay-Cherkessia, has become the world’s only instrument to commit changes the brightness of the black hole.

According to Tass, the celestial phenomenon has been observed by astronomers at a distance of nine billion light years from Earth and has received received the designation GRB 160625B
-. MMT Telescope is designed to study high-speed processes, so the so-called light curve has been measured – how the object illumination time. MMT telescope is unique in the world, who gave the light curve at the birth of a black hole – quoted by the news agency the head of the press center of the University of Camila Gareeva

Multi-channel monitoring telescope was set up in 2014 by specialists of the Kazan Federal University in cooperation with the company “. Parallax “and scientists of the Special Astrophysical Observatory of the Russian Academy of Sciences. It is designed for the observation of very large areas of the sky – in the language of astronomers, broad fields

By monitoring the starry sky, the telescope gets image . another site area of ​​approximately 900 square degrees 10 times per second

in this mode, it is able to detect and investigate ultrafast physical phenomena and transient objects of different kinds: from meteors in the earth’s atmosphere and the variable stars in our Galaxy to distant gamma bursts – super powerful explosions of massive stars. Simply put MMT can not only detect suddenly appeared a source of radiation, including moving, at a distance of up to several hundred thousand kilometers from the Earth, but also very fast to begin its study. Note the total flux of recorded system information of about 1 gigabyte per second.

MMT telescope (Mini-MegaTORTORA) installed in Karachay-Cherkessia, August 17, 2014, on the territory of Special Astrophysical Observatory telescope carries the full monitoring of the sky 1.5 times per night. The amount of data accumulated over the night, up to 28 terabytes. The device is remotely controlled from Kazan University. “In the mountains of Karachayevo-Cherkessia, very dry air, the refraction due to the lack of moisture is minimal, the telescope in such conditions works better,” – said Gareev

As previously head of Relativistic Astrophysics Group of the Special Astrophysical Observatory of the Russian Academy of Sciences Grigory Beskin. , the uniqueness of the MMT in the fact that it can not only detect suddenly appeared a source of radiation, including moving, at a distance of up to several hundred thousand kilometers from the Earth, but also very fast to begin its study.

MMT has nine lenses, each of which is provided with a high time resolution of the detector (0.1 seconds). The device has a large field of view of about 900 square degrees.

Special Astrophysical Observatory of the Russian Academy of Sciences is in the North Caucasus at the foot of the mountain Pastukhov in Zelenchuk area. It is Russia’s largest astronomical center, a large telescope azimuth and RATAN-600

Black Hole -. A region of space-time, the gravity of which is so great attraction that leave it can not even objects moving at the speed of light, including the rays of light. The boundary of this area nazyvaetsyagorizontom events, and its characteristic size – gravitational radius . In the simplest case of a spherically symmetric black hole Schwarzschild radius it is.

in theory, the possibility of existence of such regions of space-time should be of some exact resheniyuravneny Einstein, the first of which was obtained by Karl Schwarzschild in 1915. The exact inventor of the term is unknown n , but the very symbol was popularized by John Archibald Wheeler and for the first time publicly is used in a popular lecture “Our Universe: known and unknown” (English Our Universe:. The Known and Unknown ) 29 dekabrya1967 year . Earlier such astrophysical objects called “collapsed stars” or “collapsars” (otangl. collapsed stars ), as well as “frozen stars” (English . frozen stars ). [4]

The question of the real existence of black holes is closely linked to how true theory of gravity, which implies their existence. In modern physics, the standard theory of gravity, the best-confirmed experimentally, is the general theory of relativity (GTR), confidently predicts the possibility of the formation of black holes (but their existence is possible and within the framework of other (not all) models, see. Alternative theory of gravitation). Therefore, the observed data are analyzed and interpreted, first of all, in general relativity context, although, strictly speaking, this theory is not yet intensively experimentally tested for the conditions corresponding to the space-time region in the vicinity of the horizon of black holes of stellar mass (however well documented in a corresponding to the supermassive black holes, [5] and is consistent with the first gravitational-wave signal with an accuracy of up to 94%). Therefore, the approval of the direct evidence of the existence of black holes, including those in this article is, strictly speaking, it should be understood in the sense of confirming the existence of astronomical objects such dense and massive, as well as having some other observable properties that they can be interpreted as black holes . general relativity

in addition, the black holes are often referred to objects that are not strictly related to the above definition, but only approaching its properties to a black hole – for example, it may be collapsing stars in the later stages of collapse. In modern astrophysics, this distinction does not give much importance, since the observed manifestations of “almost collapsing” ( “frozen”) stars and the “real” ( “eternal”) black hole is almost the same. This is because the physical fields differences around collapsar from those of the “eternal” black hole decreases by a power law with a characteristic time of the order of the gravitational radius, divided by the speed of light – that is, in a split second for black holes of stellar mass and watches for supermassive black holes .


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