JB Gayet

Un instrument de l’ESO découvre le trou noir le plus proche de la Terre

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Pas bien loin, mais nous sommes  protégés parce que la majorité d'entre nous vivons dans l'hémisphère nord!  ;-)

1 100 années lumières, pas tout près quand même.


Bon ciel.

Edited by roul

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A naked-eye triple system with a nonaccreting black hole in the inner binary


HR 6819


The radial-velocity semi-amplitude of 61.3 km/s of the inner star and its minimum (probable) mass of 5.0 Msun (6.3 +- 0.7 Msun) imply a mass of the unseen object of >= 4.2 Msun (>= 5.0 +- 0.4 Msun), that is, a black hole (BH).



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