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To get an electromagnetic counterpart, you need matter to be in the system. It may be possible for binary neutron star and some neutron-star black hole mergers. These types of merg…

We do account for the expansion of the universe in fact. We estimated that this source was at about z ~ 0.2 (see https://en.wikipedia.org/wiki/Redshift ). Roughly speaking this mea…

It's important to know that LISA and LIGO aren't really competing for sensitivity. Rather they complement each other by looking in different frequency ranges. The relationship betw…

Hi Nonbel, I work within the LIGO Scientific Collaboration, and as another posted commented, manual intervention (in the case of GW170104 by me) was only necessary for the online a…

Before merging, yes , they do shed angular momentum before merging. In fact, if you calculated the angular momentum of two maximally spinning black holes, you'd realize that if you…

I think you might be confusing LVT151012 which was including in the announcement back in February and all the subsequent papers. That is a low significance trigger that may be anot…

For the most part, we concentrate on quantities far away from the sources as these are what we have a chance to measure and can more easily intuit. There are however, extremely pre…

To give you an idea of how crazy this is. It is like measuring the distance from the earth to the sun to an atomic radius.

Funding for its construction was approved by India. We are hoping that it might coming online in ~ 5 years. It takes a long time to build everything from the ground up.

The answer is actually yes, at least in principle. In practice this would be extremely difficult (read impossible) due to the weakness of gravitational wave interactions.