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Andromeda321 OP t1_je9pock wrote

Astronomer here! I posted about a month ago about helping discover the second closest black hole to Earth. At that point, we hadn’t undergone peer review, but in the first time in memory the paper was accepted with absolutely no comments by the referee. Huzzah! So thanks to such a speedy process, the paper is published today and we got to do a press release celebrating this new black hole population we are uncovering in our neighborhood!

Can’t wait to see what we find next!

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jcampbelly t1_jeam8b2 wrote

Congrats and thanks! A very interesting read. And the Gaia mission is so damn cool. A compass and map to inform and recommend potential other missions. The Sagan Summer Workshop on Gaia was very accessible: https://youtube.com/playlist?list=PLIbTYGsIVYti7z5CHoiS5BJlT11gHUtgt

Perhaps it's just a small black hole in a small solar system that eventually devoured up everything in its neighborhood, leaving nothing to accelerate from its polar jets. You'd expect a black hole formation to be violent and leave remnants, but if it happened so long ago that the remnants were all eventually devoured or flung off, it might just be alone in dark. Is the companion very old?

Does the Gaia data show it having a trajectory moving with the galaxy or "through" it? Perhaps it happened elsewhere and the remnants were left behind in some ejection event that stripped the system of its lighter elements and sent the more massive objects tumbling through the galaxy.

I love how the Gaia data just keeps building on itself. And the next release is expected to dump something like 10,000 exoplanet candidates. That's huge...

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