A fast-rotating supermagnetic, 500-year-old baby neutron star has been discovered in the Milky Way at an unprecedented speed.
Flickering X-ray film with Radio wave The name of this huge baby-nicknamed J1818.0-1607-may have first appeared in the sky when Polish scientist Nicolaus Copernicus proposed Nicholas (not the sun). Earth) Is the center of the universe, first look up at the sky.
If Copernicus had an orbiting X-ray telescope or a powerful radio receiver, he would have witnessed the birth of a magnetar: an ultra-rare, intense neutron star, a neutron star with extreme distortion magnetic field. Only 500 years later (assuming the astronomer’s age is correct), the screaming baby is still spinning faster than any known magnetar, one revolution every 1
Like all neutron stars, J1818.0-1607 will explode after the death of a large star called a supernova, which is the remains of its core. As far as astrophysics is concerned, neutron stars are small, no more than Madison, Wisconsin.However, apart from black holes, it is the densest object known in the universe. The filled matter is crushed to the position of atoms, losing the structural integrity, and fusing together, just like a giant’s nucleus. atom -Neutron stars can be as big as full-size stars.
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Only a small part of neutron stars are magnetars. But this is not the only unusual thing about J1818.0-1607. It is also a pulsar, an ultra-fast cosmic beacon that darkens and brightens with each rotation.
The researchers involved in the study said at NASA: “According to records, only five magnetars also function like pulsars, accounting for less than 0.2% of the total number of known neutron stars.” statement.
To determine the age of the magnetar, the researchers tracked the slowing of the magnetar over time and estimated the speed of its rotation. Judging from its initial rotation speed, it will take 500 years for the new electromagnet to slow down to its current speed.However, according to a paper published on November 26, 2020, this age estimate is somewhat unreliable Astrophysical Journal Letter.
Since the magnetar is still very young, astronomers should be able to find the remnants of the supernova that gave birth to it, and researchers may find it “relatively large” from the magnetar. If the magnetar does exist for 500 years, and the supernova remnant is indeed the remnant of the birth of the magnetar, then its entire life cycle in the galaxy will move at a speed of about 80 to 16 million miles per hour (13 to 26 million kilometers per hour) ), faster than any other about 3,000 known neutron stars. However, if astronomers estimate the age of the magnet incorrectly, or researchers determine the wrong remnants, the young man may not move so fast.
However, although the baby is a newborn baby from an astronomical point of view, there may be a younger magnetar in the baby. Galaxy, Although it may be the slower one. As previously reported by Life ScienceThe researchers believe that they may have witnessed the actual birth of a magnetar in a distant galaxy last year, which makes the magnetar no older than human children.
Originally published in “Life Science”.