Course : Εισαγωγή στη Ραδιοστρονομία
Course code : PH338C
Definition
The range of frequencies observed by a receiver. A larger bandwidth usually improves sensitivity and allows more spectral information to be collected
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Definition
The separation vector between two antennas in an interferometer.
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Definition
The region of the sky to which an antenna is sensitive. A radio telescope does not observe a single point but a finite patch of sky.
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Definition
Combining signals from multiple antennas to form a directional beam on the sky.
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The angular size of the telescope beam, often measured by the full width at half maximum.
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Definition
Radiation emitted by an ideal object in thermal equilibrium. Important for understanding the cosmic microwave background and thermal radio sources.
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Definition
A way of expressing radio intensity as the temperature a blackbody would need to have to produce the same radiation at that frequency.
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