Unexpected observations of a series of fast radio bursts (FRBs) challenge the prevailing understanding of the physical nature and central driver of these strange objects. cosmic signs.
FRBs are millisecond-long cosmic explosions that produce energy equivalent to the annual output of the Sun. More than 15 years after the discovery of electromagnetic radio wave pulses for the first time in the world deep spaceTheir bewildering nature continues to fascinate scholars, and recently published research deepens the mystery surrounding them.
Observations under re-investigation were made in late spring 2021 using mega radio telescope Five Hundred Meter Ball Aperture (FAST) in China. The team is led by Heng Xu, Kejia Lee and Subo Dong from Peking University and Weiwei Zhu from observatories National astrological China, along with Zhang, detected 1,863 bursts in 82 hours over 54 days from an active fast radio burst source called the FRB. 20201124 a.
“This is the largest sample of FRB data with polarization information from a single source,” Lee said in a statement.
Recent observations of a fast radio burst out of our galaxy, and Milky Wayindicating that it originated in a magnetar, which is a star A dense neutron field the size of a city with an incredibly strong magnetic field.
On the other hand, the origin of distant cosmic fast radio bursts is still unknown. And the last notes left Scientists They wonder what they think they know about them.
“These notes brought us back to the drawing board,” said Zhang, who also serves as the founding director of the Center. Astrophysics Nevada from the University of Nevada, Las Vegas.
“FRBs are clearly more mysterious than we imagine. More multi-wavelength observational campaigns are needed to further reveal the nature of these objects.”
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