Friday, November 26

Mexicans after the origin of a radio signal that was believed to be extraterrestrial | Digital Trends Spanish


A team of astronomers from Canada and Mexico found the origin of a mysterious radio signal, first captured in 2007 by a doctoral student investigating data from pulsars captured by the Parkes telescope in New South Wales.

These signals, known as fast radio bursts (FRBs), caught the interest of the scientific community because they lasted only a few milliseconds and given their repetitions, it was thought that they could be of extraterrestrial origin. Theories were even handled such as that the FRBs were the product of a starship explosion.

However, as the fast radio bursts were detected in a wide dispersion at different locations (around 600 FRBs have been detected since their discovery in 2007), the theory that their origin was extraterrestrial was weakened.

Sebastian Zentilomo.

Now, research published in the Astrophysical Journal Letters by astronomers from the National Institute of Astrophysics, Optics and Electronics of the UNAM in Mexico (INAOE) and the Canadian Hydrogen Intensity Mapping Experiment (CHIME), identifies the origin of a rapid radio burst identified as 20181030A and captured for the first time in 2019.

The experts indicated that the detected signal comes from a spiral-shaped galaxy known as NGC 3252, located about 65 million light-years away. The finding was made using the OSIRIS instrument of the Gran Telescopio de Canarias, located in Spain.

They identify the origin, but not the cause

Dr. Aida Kirichenko from the Institute of Astronomy of the UNAM stressed that although the finding allows us to identify FRBs in the confines of our galaxy, it remains unknown what originates these signals.

The expert recalled that one of the identified FRBs was detected in a neutron star with a high magnetic field, known as a magnetar. However, he clarified that not all FRBs have the same origin.

“Observations of different host galaxies show us that it is likely that not all radio bursts arrive from the same type of objects. This makes them more mysterious because we cannot explain the nature of all the outbursts with the same theory, and that is why it is necessary to detect more outbursts and further characterize the environments from which they come in order to define nature or propose better models to explain them, “he said. the expert in statements collected by Infobae.

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