ahnitz

4 ms·

1.
by ahnitz 9y ago
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 mergers are one of the predicted sources of short gamma ray burs
2.
by ahnitz 9y ago
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 means there'll be only ~20% effect as
3.
by ahnitz 9y ago
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 between LISA and LIGO is analogous to a radio telescop
4.
by ahnitz 9y ago
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 analysis. The purpose of online analysis is for fast coordina
5.
by ahnitz 9y ago
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 could combine them, it would larger than the maximal
6.
by ahnitz 10y ago
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 another binary black hole merger. GW151226 is only being reporte
7.
by ahnitz 10y ago
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 precise simulations of GR that can numerically simulate the spa
8.
by ahnitz 10y ago
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.
9.
by ahnitz 10y ago
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.
10.
by ahnitz 10y ago
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.