How can black holes have merged?

Subject: How can black holes have merged?

Date: Fri Jun 11 09:46:19 2010
Posted by Carl
Grade level: nonaligned School: the teaching company
City: Las Vegas State/Province: NV Country: usa
Area of science: Astronomy
ID: 1276274779.As

Message:


OK, because of time dilation, we cannot observe any material actually being 
absorbed by a Black Hole;  it accumulates in the accretion disk forever.  How, 
then, can we observe the existance of Black Holes that have already merged 
with other Black Holes, even supermassive Black Holes resulting from galaxy 
mergers?  It seems such events would never be completed to observers with our 
frame of reference?

Re: How can black holes have merged?

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