Physics, Astronomy & Cosmology / Re: Why does the light arrive after the gravity waves from colliding neutron stars?« on: 17/10/2017 22:23:58 »
A big difference between the light and gravitational waves in this scenario is that gravitational waves have been emitted constantly over the course of the neutron star pair's orbit, whereas the light was only emitted during the collision itself. As the pair spiral closer to each other, the gravitational waves grow stronger and stronger. I imagine the reason that we detected the waves before we detected the light was because the waves grew strong enough to detect 2 seconds before the actual collision took place.
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