Les observations de Chandra du centre de SN 1987A et une impression d’artiste du pulsar croyait être là Rayons X: NASA / CXC / Univ di Palerme / E Greco; Illustration: INAF-Osservatorio Astronomico di Palermo / Salvatore Orlando

The 24 February 1987, des astronomes ont observé la supernova la plus proche de la Terre en 400 ans SN 1987A, comme on l’appelait, a eu lieu dans le Grand Nuage de Magellan, l’un des compagnons galactiques de la Voie lactée Il est devenu l’un des objets les plus étudiés du ciel, et un grand mystère s’est ensuivi au cours des 34 last years – et il aurait peut-être finalement été résolu

Astronomers did not know what the supernova had left behind Observations of the supernova suggest a pulsating neutron star (pulsar) was probably the vestige of this cosmic explosion, but no proof of this could be found until recently These are reported in The Astrophysical Journal Letters

Observations from NASA's Chandra X-ray Observatory, du Nuclear Spectroscopic Telescope Array (NuSTAR) from NASA and the Atacama Large Millimeter Array (ALMA) on the ground paint a very interesting picture Although they have not seen the pulsar itself, they found evidence of a pulsar wind nebula

“Since 34 years, astronomers sifted through stellar debris from SN 1987A to find the neutron star we expect to find there”, said lead author Emanuele Greco, from the University of Palermo in Italy, in a press release. “There were many clues that turned out to be dead ends, but we think our latest results might be different”

The team believe that the nucleus of SN 1987A is surrounded by gas and dust This material prevents the pulsar from being visible, absorbing the x-ray photons that the pulsar is expected to produce – hence the reason why until now, the pulsar did not come.

The combined power of the three observatories proves that the emission observed so far corresponds to what a pulsar would look like enveloped in gas and dust. There are alternative explanations, but they are much less likely based on what we know

The models used also have an important prediction: this veil of dust is dissipating soon, we could see the pulsar directly

“Being able to watch a pulsar essentially from birth would be unprecedented.”, added study co-author Salvatore Orlando from the Palermo Astronomical Observatory. “This could be a unique opportunity to study the development of a baby pulsar”

According to the works, the pulsar will become visible over the next decade 168 000 light years from Earth, it wouldn't be the closest, but it would definitely be the youngest ever

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Supernova, neutron star, neutron, rest of the supernova, NASA, Pulsar, SN 1987A, NuSTAR, astronomy

News – FR – Scientists may have finally found the missing product of a famous supernova
Associated title :
– Reclusive neutron star may have been found in famous supernova”> Reclusive neutron star may have been found in Famous Supernova
– A Reclusive neutron star could have been present in well-known supernova
Scientists may have finally found the missing product of a famous supernova
NASA observatories likely detect long-standing 1987A supernova nucleus
NASA's X-ray telescopes& may have found a reclusive neutron star in the famous supernova
Have you found the neutron star 1987A?

Source: https://www.iflscience.com/space/scientists-may-have-finally-found-the-missing-product-of-a-famous-supernova/

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