An international team of astrophysicists said about the impossibility of observing the pulsar (old neutron star) J1906 in a binary system. The object that was previously seen as scientists assume, disappeared from view due to the curvature of space-time. The results of their research scientists published in The Astrophysical Journal, and briefly with them can be found at the Netherlands Institute for Radio Astronomy.
It is believed that this was due to the strong gravitational fields in the observed binary system, so that the geometry of space time near the pulsar was arranged in such a way that it has become invisible to an observer on earth. Calculations carried out by scientists say that the pulsar in the world can be seen around 2170.
A pulsar is a superdense neutron star, which was formed after the supernova explosion. The object is rotated and fairly quickly produces radiation direction is tilted at an angle to the axis of rotation of the pulsar. It is this radiation and allows us to observe the pulsar.
In 2004, scientists reported finding at a distance 7670 parsecs from the Sun in the constellation Aquila pulsar. Then it became known that he is double and consists of a radio pulsar J1906 and neutron star (or a white dwarf by another hypothesis). Observations made by astrophysicists in the past five years, have allowed to define the parameters of these objects.
09:28 July 27, 2014
So, their mass slightly greater than the sun, and the distance between them is very small and comparable to the diameter of our star. The diameter of the pulsar does not exceed a few dozen kilometers away.
Objects revolves around each other for a period of about four hours. J1906 rotates around its axis at a frequency of seven cycles per second. The axis of rotation of the object itself is rejected by about two degrees per year – that is what allowed us to estimate the time when the pulsar can be observed again in the world.
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