How Is Interferometry Used in Radio Astronomy

question 237

Multiple Choice

How is interferometry used in radio astronomy?

• A) Signals from a radio source are combined with an equivalent signal delayed in time to produce interference, thereby increasing the angular resolution of the telescope.
• B) Signals from different places around the dish of a radio telescope are combined to produce interference and increase the angular resolution of the telescope.
• C) Signals from two or more different radio telescopes are combined to produce a single image of greater angular resolution than from any one telescope alone.
• D) Signals from different parts of a radio source are combined to increase the angular resolution of the telescope.

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Definitions:

Actual Price Level

The current average of all prices of goods and services in an economy, reflecting the purchasing power of money.

Quantity of Output

The total amount of a product or service that is produced by a company or an economy.

Short Run

A period in economics during which at least one factor of production is fixed, typically understood as a timeframe insufficient for adjusting all inputs.

Aggregate Demand

Summation of demand for all goods and services in an economy, factored at a certain price level and within a definite time span.