The Hubble telescope took pictures of the most distant stars of the Universe

Телескоп Hubble сделал фото самой далекой звезды Вселенной

Star Icarus – while the distant luminary of the universe

Observing this star will help to understand the role of dark matter in the formation of gravitational lenses and get closer to the opening of the so-called primordial black holes.

A powerful gravitational lens, oselivka light two thousand times, helped the orbiting Hubble telescope to get pictures of the stars of Ikar, remote from the Earth at 9 billion light-years. It is reported RIA Novosti with reference to the journal Nature.

“We were the first to see an ordinary star is not a supernova, not gamma-flash, and most ordinary light, remote from us at nine billion light-years. It seems to us, other similar blending of “cosmic lenses” will help us to see the earliest stars of the Universe. The universe itself gave us the great telescope which only can exist,” said Alex Filippenko of the University of California at Berkeley.

Any gathering of matter a large mass, including dark interacts with the light and causes its rays to bend, as do conventional optical lenses. Such an effect scientists call gravitational lensing. In some cases, the curvature of space helps astronomers to see objects svargaloka – the first galaxies and their nuclei-quasars – which would be unobservable from the Ground without gravity “increase”.

If the two quasar, galaxy, or other object placed side by side to observers on Earth, there is an interesting thing – the light of the more distant object will split when passing through the gravitational lens of the first. Because of this we will see not two, but five bright points, four of which will be light “copies” of the more distant object. In addition, this “lens Einstein” often overlap each other, which amplifies the light of more distant objects.

Filippenko and his colleagues, including Nobel laureate Adam Riess, for the first time were able to obtain detailed images of stars that existed in one of the first galaxies of the Universe, observing the galaxy cluster MACS J1149, located in the constellation Leo at a distance of five billion light-years from Earth.

This cluster, as found by scientists in 2014, closes another major “family” of galaxies, traces of which can be seen as a bright ring of light that surrounds MACS J1149. Analyzing the structure of images obtained by Hubble in 2016 and 2017, Filippenko and his colleagues noticed an unusual object that was distracting from the overall number of galaxies.

After analyzing its spectrum and measuring the dimensions, scientists have discovered that we are dealing not with a supernova or gamma-ray burst, a normal star, which refers to the number of blue supergiants. It is located on the outskirts of the galaxy, remote from Earth is about 9 billion light-years away, on the opposite edge of which recently exploded supernova, SN Refsdal, whose light has also been repeatedly reinforced the “lens” MACS J1149.

In the past, this star, nicknamed Icarus and the name of the MACS J1149 LS1, remained invisible to Hubble or any other telescope. It became visible only after its position in the galaxy has shifted, and its light began to pass through a neighborhood of another star, a small dwarf-sized Sun, on the way to cluster MACS J1149. This has increased its illumination to 600 times and have allowed astronomers to open it.

In the near future is expected Filippenko and his colleagues, MACS J1149 LS1 will be even brighter due to further shifts in the position of the stars in its home galaxy. The observation of the sun, as scientists hope will help them understand the role of dark matter in the formation of such gravitational lenses and get closer to the opening of the so-called primordial black holes.

Earlier it was reported that the Hubble telescope found the most distant of all detected galaxies. It is located at a distance from Land that a dim light of stars reaches us through 13.4 billion light years.

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