When ace between 10 and 25 times the multitude of the Sun go supernova , they leave behind a neutron adept . They are the minor and dim stellar object , packing into a sphere with a diam of 20 kilometers ( 12.4 miles ) and a mass of just over double of our Sun . Magnetars are a very limited form of extremely magnetised neutron star – the highly thick core of a star that has go supernova , with the most hefty charismatic fields in the universe of discourse . Pulsars are another category of neutron star , know for their regular pulsation of sometimes hundreds of prison term a second .
Last year astronomers discoveredJ1818.0 - 1607 , the youngest known magnetar . It is also the one rotating the fastest , finish a full spin in less than 1.4 second . The belated observations revise distance and suggest that this very particular stellar object is even more special . The findings are reported inThe Astrophysical Journal Letters .
Out of 3,000 lie with neutron stars , there are 2,000 known pulsars , with 31 classified as magnetars . Only five are both pulsars and magnetars . NASA ’s Chandra observations have localise J1818.0 - 1607 among those five .
When fast - rotating neutron stars sort , their spin is very gamey and slows down with time . As the rotation speed decline , some of the energy from this decrease is convert into X - ray , and these were take note by Chandra . The data shows that this physical object is less efficient than other magnetars at get X - rays – its efficiency stratum are on par with what has been visualise from rotation - powered pulsars .
reading of the double nature of this magnetar also come from a different group of astronomers . The radio emission detected from this star using the NSF ’s Karl Jansky Very Large Array ( VLA ) is likewise what is ordinarily seen from rotation - powered pulsars .
The new study has also started a spot of a mystery . Neutron lead are often find ring by the debris of the supernova explosion that make them . There was the expectation to determine a considerable amount of clobber around J1818.0 - 1607 , but it was far from obvious .
Theauthors of this studyused datum from Chandra , the VLA , andretired infrared scope Spitzerto zero in on the supernova oddment . They obtain a potential candidate for it , but it is quite far from the magnetar . Even if this object is much sure-enough than what has been figure , the stuff must have traveled quicker than any other known supernova remnant interrelate to a neutron star . More observations will be necessary to hear and unravel this mystery . The objective is located close to the plane of the Milky Way at a length of about 21,000 short - geezerhood from our planet .
