September 26, 2021

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An unknown object is sending radio signals from the center of our galaxy

An unknown object is sending radio signals from the center of our galaxy

https://mundo.sputniknews.com/20210907/un-objeto-no-identificado-envia-senales-de-radio-desde-el-centro-de-nuestra-galaxia-1115810101.html

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Milky Way

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Milky way, astronomy, fast bursts of radio waves (frb)

A group of astronomers has discovered a rare source of radio signals not far from the center of our galaxy. Scientists have not yet been able to discover what cosmic body is behind the signal emission.

“It is a highly polarized variable radio source located near the galactic center and without a clear multi-wavelength counterpart,” explains Ziteng Wang, team leader for astronomers at the University of Sydney (Australia), who is responsible for the discovery.

Currently, the object has been baptized ESCAP J173608.2-321635 Details about his discoveries and properties will be published soon in Investigation in the Astrophysical Journal
“ASKAP J173608.2-321635 may represent part of a new class of organisms being discovered by radioimaging studies,” Confirms Wang, citing Science Alert.

The mysterious object was discovered with the help of ASKAP in Australia. This is one of the The most sensitive radio telescopes Ever In The World, which was specifically designed to allow scientists to take a deeper look into the world of radio signals. The device has already detected things never seen before, such as strange radio circuits, unknown galaxies and mysterious fast radio bursts.

Scientists do not exclude that ASKAP J173608.2-32163 is an already known type of cosmic object. However, if this were the case, it would certainly expand the definition of such an object, taking into account the characteristics that scientists have already been able to identify.

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ASKAP J173608.2-32163 is highly variable, which means it emits radio waves for weeks at a time and then disappears. The signal is also highly polarized, which means that the direction of electromagnetic wave oscillation is skewed, both linear and circular, Science Alert explains.

The object is also difficult to detect. Prior to April 2019, it was never discovered by ASKAP. From this period until August 2020, the reference appeared 13 times in the data collected. However, follow-ups in April and July 2020 conducted with a different radio telescope did not detect its presence.

The existence of the object was confirmed by observations from the radio telescopes MeerKAT (South Africa) in February 2021 and ATCA (Australia) in April of the same year. However, ASKAP J173608.2-32163 has not been detected by these devices before.

Exoplanet (reference image) - Sputnik world, 1920, 12.17.2020

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The source of the radio signal is also not shown in X-ray notes NS near infrared, nor in wireless data files collected by the various tools the researchers analyzed. Some types of stars differ in radio wavelengths, such as a mysterious object. However, the lack of detection of X-ray and near-infrared wavelengths makes this type of object unlikely.

It is also not likely to be so to throb, since these neutron stars have a regular periodicity, on a time scale of hours, which does not match the behavior of ASKAP J173608.2-32163. In addition, astronomers note a three-month delay without detecting the object, which is also incompatible with pulsars. Scientists have also ruled out the possibility that they are X-ray binaries, gamma-ray bursts, or supernovae.

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However, the object does share some characteristics with some kind of mysterious signal that was discovered near the galactic center. They are around Radio transits of the Galactic Center —GCRT, for its English acronym—, three of which have been identified in the past two decades. These fonts have not yet been explained, but they have many features in common with ASKAP J173608.2-32163. If the mysterious object is a GCRT, its discovery could help scientists find more of these sources and find out exactly what they are.

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Radio signals from a distant galaxy baffle astronomers