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Largest diamond in Universe is the star PSR J2222-0137- VIDEO PDF Print E-mail
Sunday, 29 June 2014 05:00

Largest diamond in the Universe is the star PSR J2222-0137, as a white dwarf star PSR J2222-0137 consists of crystallized carbon, and hence is a giant celestial diamond.

"The discovery of such objects is always a feast for astronomers. They have amazing properties, but because of their low luminosity is extremely difficult to find," - says lead study author David Kaplan (David Kaplan).

Observations were carried out unique astronomical object with instrumentation U.S. National Radio Astronomy Observatory - Green Bank Telescope and "antenna array with very long baselines."

Age cosmic diamond is about 11 billion years, that is, he is the same age as the Milky Way. The object is a white dwarf - the final product of the evolution of stars, cold body, the size of the Earth, consisting of carbon and oxygen.

Opening managed to exclusively due to the presence in the diamond-dwarf companion pulsar. Pulsars are rapidly rotating neutron stars that emit a "fountain" of radio emission from their poles. When one of these beams is directed towards the Earth (which occurs at regular intervals during the rotation), ground radio telescopes capture the pulse of radio waves.

Scientists have found that the neutron star rotates at a speed of about 30 revolutions per second. Then the second object was found near her. Originally, astronomers thought that they were dealing with an ordinary double neutron star, but the second object has been extremely small and cold.

Einstein's relativity theory helped to define the degree of curvature of space-time caused by the gravitational field of the pulsar. So scientists have calculated the mass of the pulsar (1.2 times solar) and his companion (1.05 times larger than the Sun). Both objects are turning around each other every 2.45 days.

System was installed for constant surveillance, which lasted two years. During these observations, it was found that the white dwarf with a neutron star located in the constellation of Aquarius is 900 light years from Earth. Comparing these data with information about the radio pulses, Kaplan and his colleagues have more knowledge about the characteristics of a white dwarf and a giant "satellite".

Unique is located in the constellation Aquarius 900 light years from Earth (photo Wikimedia Commons).

Using these data, Kaplan and his team were adamant that such a massive object they can see into powerful infrared and optical telescopes, but observations have yielded no results.

"Calculations show that we are dealing with a white dwarf, which is 100 times fainter than any of the white dwarf orbiting a neutron star is about 10 times fainter than any known all white dwarf. Unsurprisingly, we are not able to see him" - says study co-author Bart Dunlap (Bart Dunlap) from the University of North Carolina at Chapel Hill.

Approximate temperature of the star is also possible to calculate - it is about 3 thoUSAnd degrees Kelvin (2700 degrees Celsius).

In his article published in the edition of Astrophysical Journal, scientists note that such objects may not be so rare in the Universe. Yet modern appliances do not allow them to see, but it does not mean that the cold white dwarfs do not exist at all.


НАЖМИТЕ ЗДЕСЬ ДЛЯ ПРОСМОТРА ВСЕГО СПИСКА НОВОСТЕЙ О НЕОБЫЧНЫХ ЯВЛЕНИЯХ>>>

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