Deși nu este singura gaură de acest fel, un cercetător de la Universitatea din Sheffield spune că această gaură neagră este „prima care a fost detectată fără ezitare în afara galaxiei noastre”.
Cercetătorii caută sisteme binare de găuri negre de mai bine de doi ani, înainte de a găsi ceea ce a devenit cunoscut sub numele de VFTS243.
Paul Crowther, profesor de astrofizică la universitate, a descris-o ca fiind o „descoperire foarte interesantă” care vine după ce „au fost propuse un număr de găuri negre latente candidate”.
Găurile negre cu masă stelară se formează atunci când stelele masive ajung la sfârșitul vieții și se autodistrug sub propria gravitație. Într-un sistem cu două stele care se rotesc una în jurul celeilalte, acest proces lasă în urmă o gaură neagră pe orbită cu o stea însoțitoare luminoasă.
Gaura neagră inactivă recent descoperită are de cel puțin de nouă ori masa Soarelui nostru și orbitează o stea albastră fierbinte, care cântărește de 25 de ori mai mult decât Soarele.
A fost observată într-o galaxie vecină de o echipă de oameni de știință internaționali, iar studiul lor publicat în Nature Astronomy sugerează că steaua care a dat naștere VFTS243 a dispărut fără niciun semn de explozie asociată unei supernove.
O gaură neagră este considerată inactivă dacă nu emite niveluri ridicate de radiații cu raze X, așa cum sunt de obicei detectate astfel de găuri negre. Găurile negre latente sunt greu de observat, deoarece nu interacționează prea mult cu mediul înconjurător.
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