Astronomers in Japan have discovered "cosmic Magatama"


02/04/2013

Celestial object that resembles a Magatama - Old Japanese charm - and formed an extremely rare superposition of two galaxies, was discovered by Japanese astrophysicists. One of the galaxies "space Magatama" acts while in the role of a gravitational lens. Summary of the paper published in the journal Astrophysical Journal, stated in a press release on the website telescope "Subaru".

Astronomers have studied the young galaxy LAE 221724 001716, which is 11.6 billion light-years from Earth. From the cluster of stars came hard ultraviolet radiation, but it was the source of some offset from the location of the galaxy.

Scientists have conducted monitoring with Hawaiian teleskokopov "Subaru" and "Keck" and found that in fact the space object intricate form is nothing more than a superposition of two galaxies, one of which distorts the light of a distant galaxy. Such an imposition is rarely seen in space, so it was difficult to immediately astrophysicists to understand the nature of this unusual object.

Determine the mass of the nearest galaxies have allowed further observations. Her weight was equal to about a billion solar masses, that the mass of the Milky Way is only one-hundredth. Astrophysicists could estimate the distance between a pair of mysterious galaxies, and the degree of gravitational lensing, which is the nearest of them.

Gravitational lens effect, predicted by general relativity, based largely on a distortion of the trajectory of light around massive objects. This phenomenon is most clear evidence of the findings of Einstein, and sometimes can see distant objects that are not available by themselves for observation. Due to this effect astrophysicists have recently been able to photograph the so-called "space invader" - the galaxy’s funny distorted by the gravitational lens.


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