May 11, 2014

The scientists measured the rotation of the pulsar

Astronomers United States, Australia and the Netherlands have made measurements of the parameters of the pulsar with an accuracy exceeding the previous analysis in a million times. The authors published a study in the journal MNRAS, briefly it was available online collaboration CAASTRO.
In its work, the researchers used a pulse distortion pulsar radiation as it passes through the space between stars and galaxies , which is a medium silnorazrezhennuyu charged particles. Analyzing individual distortion from radiation object astrophysicists able to reconstruct the dynamics of flows of its radiation in general.


Pulsar B0834 +06 , we have found that the amount of space radiation from the star is smaller than previously thought , and probably is closer to the surface. The scientists compared their accuracy achieved with an accuracy at which the Earth can be discerned with a double structure of the DNA molecule , located on the moon.

It is believed that pulsars are rapidly rotating neutron star , the magnetic field lines are inclined to the axis of rotation of the star . Such objects are sources of a focused strong radiation , because the star's rotation latching external observer in the form of periodic pulses. Depending on the wavelength distinguish pulsars , X-ray and optical pulsars . In the case of X-ray pulsar emission is due to accretion companion star , while the pulsar emits its own energy.
Due to the small size of neutron stars (about one or more kilometers ) for their observations using high-precision telescopes . In their study, the researchers used a very long baseline radio interferometry . This method uses several telescopes located at considerable distances ( thousands of kilometers) from each other.
The emission mechanism of pulsars so far, since opening in 1967 of the first radio pulsar PSR J1921 +2153 in the constellation Vulpecula , remains unclear. In its work, astronomers were able to improve the accuracy of determining the parameters of the pulsar is a million times compared with previous research results .

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