Answer to Question #123132 in Astronomy | Astrophysics for hxkjopz

Question

This problem requires you to read the following recently published scientific article:
Observation of GravitationalWaves from a Binary Black Hole Merger.
B. P. Abbott et al., LIGO Scientific Collaboration and Virgo Collaboration
arXiv:1602.03837, (2016). Link: https://arxiv.org/pdf/1602.03837.pdf
Answer following questions related to this article:
(a) How was the existence of gravitational waves first shown?
(b) Which detectors exist around the world? Why did only LIGO detect GW150914?
(c) Explain the components of the LIGO detectors.
(d) Describe the dierent sources of noise. How was their impact reduced?
(e) What indicates that the gravitational wave originated from the merger of a black hole?
(f) Which are the methods used to search for gravitational wave signals in the detector data?
(g) How were the source parameters (mass, distance, etc.) determined from the data?

Answer 1

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