Why Do Astronomers Require Measurements from at Least Three Gravitational

question 148

Multiple Choice

Why do astronomers require measurements from at least three gravitational wave detectors to identify the source of a gravitational radiation signal?

• A) Gravitational waves have a wavelength of about a thousand kilometers, requiring detections across large distances.
• B) Gravitational waves are so weak that several detectors are required to confirm a signal.
• C) Three detections are required to separate real gravitational waves from locally generated noise.
• D) The time delay between the different detectors allows astronomers to identify the direction of the source.

---

Definitions:

Basic Temperament

An individual's inherent predisposition to react to situations in a certain way, which is typically evident in early childhood and believed to be partly genetic.

Sociability

The quality of being sociable, friendly, or willing to engage in social interactions.

Goodness Of Fit Model

A theoretical model that stresses the compatibility between an individual's temperament and their environment, asserting that a good fit leads to better adjustment.