I wanted to add a tag like black-hole-merger to How do we know that supermassive black holes can gain mass by means other than merging with other supermassive black holes? but couldn't find anything close.

Considering the number of gravitational wave questions we have and the ever-expanding observational capabilities of current and future devices, mergers are going to be regularly posted questions.

Would black-hole-merger or mergers or merging-events or something similar be a good idea? Should it be specific to a pair of black holes? What about a black hole/neutron star or two neutron star merger?

  • 4
    $\begingroup$ I think a general merger tag would be useful. $\endgroup$
    – PM 2Ring
    May 16 '21 at 3:54
  • 1
    $\begingroup$ I am wondering in how far the collision-tag is overlapping here. $\endgroup$
    – B--rian
    May 18 '21 at 8:16
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    $\begingroup$ @B--rian for questions also tagged black-hole, very little. $\endgroup$
    – uhoh
    May 18 '21 at 11:35
  • $\begingroup$ @B--rian I've just asked What is the difference between the terms collision and merger? How are they used differently in Astronomy? I think that the collision that formed Earth's Moon and two black holes or neutron stars or plain-old stars spiraling in to each other eventually forming one object are too different to share the same tag. I've been "proactive" and created the merger tag. $\endgroup$
    – uhoh
    Jun 8 '21 at 23:49
  • $\begingroup$ @B--rian I think that once we can articulate the difference I can do a retagging campaign and tidy things up, but I'm open to arguments to the contrary. $\endgroup$
    – uhoh
    Jun 8 '21 at 23:50

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