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Radio astronomy - Coggle Diagram
Radio astronomy
Radio Telescopes
& Detectors
components
Reflector(s)
Feed horn(s)
Low-noise amplifier
Filter
Downconverter
IF Amplifier
Spectrometer
characteristics
units
Jy for flux density , Brightness (flux density per solid angle)
noise in unit of Kelvin
polarization
radio vs optical
larger wavelength and diameter
signal detected as a wave rather than
a photon,preserving the phase information
Interferometry
Aperture synthesis, two telescope interferometry
Baselines, uv plane, visibility
Radio Astronomy Basics
Sources of Radio Emission
Continuum sources (non-thermal)
Synchrotron
Bremsstralung
Spectral line sources
21cm Line of Neutral Hydrogen
Recombination lines
Molecular lines
Blackbody (thermal)