How Have Astronomers Searched for Evidence of MACHOs in the Halo

question 47

Multiple Choice

How have astronomers searched for evidence of MACHOs in the halo of the Milky Way?

• A) They search for stars that are binary companions of MACHOs.
• B) They search for rapidly moving,massive gas clouds.
• C) They search for disturbances in the background of gravitational waves.
• D) They search for stars whose light is briefly amplified by gravitational lensing.

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Definitions:

Quantitative Sample Statistic

A numerical measurement that describes an attribute of a sample of a population.

Statistical Quality Control

A method of using statistical methods to monitor and control a process to ensure that it operates at its full potential to produce conforming product.

Control Limits

The boundaries in control charts that distinguish between normal and abnormal variations of the process being monitored.

Quality Control Measures

Quality control measures are the techniques and activities used to ensure that the quality of a product or service meets certain standards and specifications.