United States.- Through the website of the POTreported about the discovery of the James Webb Space Telescope which found the best evidence of the mutation of a supernova into a neutron star.
The James Webb Space Telescope captured the best evidence yet of the emission of a neutron star at the site of a recently observed supernova.
The supernovaknown as SN 1987A, was a core-collapse supernova, meaning that the compacted debris in Its core formed a neutron star or a black hole.
Evidence of the presence of such a compact object has long been sought, and although indirect evidence of the presence of a neutron starthis is the first time that the effects of the high energy emission of the probable young neutron star.
The supernovae (the explosive final death throes of some massive stars) explode within hours, and the brightness of the explosion reaches its peak within a few months.
The remains of the exploding star will continue to evolve at a rapid pace over the next few decades, offering a rare opportunity for astronomers to study a key astronomical process in real time.
Supernova SN 1987A
Supernova SN 1987A occurred 160,000 light years from Earth in the Large Magellanic Cloud.
It was first observed on Earth in February 1987 and its brightness peaked in May of that year.
It was the first supernova that could be seen with the naked eye since it was observed Kepler's supernova in 1604.
Approximately two hours before the first observation in visible light from SN 1987Athree observatories around the world detected a neutrino burst that lasted only a few seconds.
The two different types of observations were linked to the same event of supernova and provided important evidence to inform the theory of how core-collapse supernovae occur.
This theory included the expectation that this type of supernova would form a neutron star or a black hole.
Since then, astronomers have searched for evidence of one or another of these compact objects at the center of the expanding remnant material.
In recent years, indirect evidence for the presence of a neutron star at the center of the remnant has been found, and observations of much older supernova remnants, such as the Crab Nebula, confirm that neutron stars are found in many supernova remnants.
However, until now no direct evidence of a neutron star after SN 1987A (or any other recent supernova explosion).
Claes Fransson, from Stockholm University and lead author of this study, explained: “From the theoretical models of SN 1987Athe 10-second neutrino burst observed just before the supernova implied that a neutron star or black hole was formed in the explosion.
But we have not observed any convincing signature of a newborn object from any supernova explosion. “With this observatory we have found direct evidence of the emission caused by the newborn compact object, probably a neutron star.”
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