Astronomers have recorded a strange signal from space

31 May 2022, 15:30 | Technologies 
фото с Зеркало недели

Scientists from the University of Sydney have recorded unusual radio signals that come from a neutron star. The researchers say their discovery could completely change the way we think about these unique star systems..

Scientists made the discovery while observing the Vela-X 1 region in the Milky Way, which is located at a distance of about 1300 light years from Earth.. The researchers noticed a strange flash and a "

[see_also ids\u003d"

“The flare had some of the characteristics of a radio-emitting neutron star. But it was not like what we had seen before,” said study lead author Manisha Kaleb..

Intrigued by the new discovery, the researchers looked through old observational data from the region in search of other similar pulses.. As a result, they found several similar events that were previously missed by the system.. The analysis showed that such pulses occur every 76 seconds, although most neutron star pulses pass within a few seconds or even milliseconds..

Further observations of the object PSR J0941-4046 showed that it has signs of a pulsar or even a magnetar.. Pulsars are the extremely dense remains of giant stars that typically radiate radio waves from both poles.. During the rotation of such objects, the impulses can be measured in the Earth, which is a bit like the signal that a beacon sends..

The longest pulsar rotation cycle known to date was 23.5 seconds.. And this means that scientists could discover a completely new class of radio-emitting objects..

The researchers were able to identify the position of the object in space with incredible accuracy. After that, they made additional observations in search of the source of impulses..

According to scientists, PSR J0941-4046 is a kind of radio-emitting galactic neutron star that rotates extremely slowly compared to other pulsars.. The pulse frequency of pulsars is constant, subsequent observations allowed the researchers to predict the arrival time of each pulse with an accuracy of 100 millionth of a second..

In addition to the unexpected frequency of the pulse, the detected object is also unique in that it is located in the " This is a region of space where scientists do not expect to detect any radio emissions, as the neutron stars here are thought to be at the end of their life cycle and dormant..

PSR J0941-4046 challenges current understanding of how neutron stars are born and evolve. The object is also unusual in that it produces seven different types of pulses, although most neutron stars do not exhibit this diversity.. Scientists believe that this feature can be explained by an unknown physical mechanism of the object's radiation..

It is currently unknown how long PSR J0941-4046 has been active and studied in the RF spectrum, as radio sky surveys usually do not cover such long periods.. It is also unknown how many such sources of impulses can exist in the galaxy..

Earlier, astronomers using the Very Large Telescope found six galaxies that surround a supermassive black hole. The discovery will allow scientists to understand how supermassive black holes could form and reach colossal sizes in a short time..

Источник: Зеркало недели