A rapidly rotating superparamagnetic 500-year-old baby neutron star was discovered compressing the Milky Way at an unprecedented rate.
Flicker X-ray And Radio waves This giant baby-the adorable name J1818.0-1607-may have first appeared in the sky by Polish scientist Nicolaus Copernicus, who proposed the sun (” Earth) Is the center of the universe and first looked up at heaven.
Had Copernicus had an orbital X-ray telescope and a powerful radio receiver, he would have witnessed the birth of a magnetar. It is an extremely twisted, extremely rare and violent neutron star species. Magnetic fields. Only 500 years later (assuming astronomers have corrected their age), this screaming toddler spins once every 1.4 seconds, faster than known magnetars. It may also be moving faster than any kind of neutron star ever discovered.
Like all neutron stars, J1818.0-1607 would have emerged as the shattered debris of its nucleus after the explosive death of a large star known as a supernova. Neutron stars are small from an astrophysical point of view and not as wide as Madison, Wisconsin. However, as the densest known object in the universe other than a black hole, it is full of matter that has been crushed until the atom loses structural integrity and is crushed to resemble the core of a single giant. atom — Neutron stars can be as large as life-size stars.
Relation: From the Big Bang to the present: snapshots of our universe over time
Only a small part of neutron stars are magnetars. But that’s not the only unusual thing about the J1818.0-1607. It is also a pulsar, a type of ultra-fast space lighthouse that darkens and brightens with each rotation.
“Only five magnetars, including this, have been recorded to behave like pulsars, making up less than 0.2% of the known neutron star population,” said researchers involved in the study at NASA. statement..
To date the magnetar, researchers tracked how it slowed down over time and estimated the spin rate at which it was born. It would have taken 500 years from its starting speed for the newborn magnetar 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..
The magnetar is so young that astronomers should be able to find the wreckage of the supernova that produced it, and researchers may have found it a “relatively large” distance from the magnetar. If the magnetar is actually 500 years old and its supernova remnant is actually the wreckage of the birth of the magnetar, the magnetar will have a lifetime of about 8 to 16 million mph (13 to 26 million km / h) of the Milky Way. I’m moving. More than any of the other approximately 3,000 known neutron stars. However, if the astronomer estimates the wrong age of the magnetar, or if the researcher identifies the wrong wreckage, the young man may not be moving that fast.
However, although this baby is astronomically a small newborn, it may have a younger magnetar. Milky WayIt’s probably slow moving. As Live Science previously reportedResearchers believe that they may have witnessed the actual birth of a magnetar in a distant galaxy last year, which is no older than a human toddler.
Originally published in Live Science.
Discover a super-fast baby magnetar screaming through the Milky Way
Source link Discover a super-fast baby magnetar screaming through the Milky Way