I wonder if this predicted supermassive black hole merger is rare for us - once in a lifetime, or we find out after LISA is operational that they happened frequently.
Am I right in thinking that the search area something like LISA and LIGO "see" is essentially the entire observable universe?
Could we could catch a merger from the first billion or so years of the universe?
I wonder if this predicted supermassive black hole merger is rare for us - once in a lifetime, or we find out after LISA is operational that they happened frequently.
Am I right in thinking that the search area something like LISA and LIGO "see" is essentially the entire observable universe?
Could we could catch a merger from the first billion or so years of the universe?