Thursday, May 10, 2018

The first time that an "exploding pulsar" was a slow-pulsating transient pulsar


The University of Southampton, Great Britain, discovered that a unique "exploding pulsar" - a neutron star that "pulls" matter from a companion star - may also be the slowest transient pulsar known to science. Transient pulsars are a rare class of neutron stars that perform transitions from x-ray to radio pulsations and back for several years.


A magistracy student at the University of Southampton, Jamie Court, together with her colleagues, also discovered for the first time that an exploding pulsar (GRO J1744-28) demonstrates something of a kind of "hiccups" in the absorption of matter flowing onto it from the side of the companion star. This fact can be explained by the fact that the flow of matter from the side of the companion star is gradually drying up, and during this period the absorption of matter becomes uneven, Kort and her colleagues believe.

In addition, Court and her team discovered that the "exploding pulsar" demonstrates other unusual properties. This neutron star rotates about an axis about two turns in one second, while other transient pulsars, discovered by scientists to date, rotate about their own axis about 100 times faster. This suggests that the "streaming" neutron star matter stream for some reason cannot perform this function. And this, in turn, suggests that the knowledge of modern astronomers regarding the design and evolution of these incredibly dense stars is not yet deep enough.

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