Bullet cluster

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The Bullet Cluster is referenced as 1E0657-56; but sometimes references quote 1E0657-558. Are they both referring to the same Bullet Cluster?
 

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  • #2
phyzguy
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NED returns Bullet Cluster information for 1E0657-56, but is unable to find anything fro 1E0657-558. I have never seen this used. Where did you find it?
 
  • #3
Vanadium 50
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@phyzguy, it's 1ES 0657-558. That's why you can't find it.
 
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  • #4
phyzguy
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So the answer to the OP's question is yes, 1E0657-56, and 1ES 0657-558 both refer to the same cluster.
 
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NED returns Bullet Cluster information for 1E0657-56, but is unable to find anything fro 1E0657-558. I have never seen this used. Where did you find it?
For instance it is referenced in this paper and this is the referenced paper.
 
  • #6
jim mcnamara
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FWIW the database has 20 cross-ids, and none match. So either the author of the primary article came up with a new name or it is a typo. And maybe should be added to the database(?) I do not know.

As you can tell the "taxonomy" of extragalactic objects is confusing at first glance. I'm a biologist so I'm used to this kind of taxonomic tangle. We call each one of multiple different biological binomials for the same thing, 'nomen confusum'. For a good reason.
 
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