Astrophysics (index)about

radio

(radio waves)
(electromagnetic radiation, frequency 3kHz to 300GHz)

Radio is electromagnetic radiation (EMR) with a wavelength of 1mm or above (100000km is sometimes cited as a "maximum"), i.e., in the frequency range of 300GHz to 3kHz. Infrared is adjacent to it on the high frequency end. The low frequency end, e.g., past 100000km wavelength, is sometimes called tremendously low frequency and/or subradio.


(EMR,spectrum,band)
http://en.wikipedia.org/wiki/Radio_waves
WaveLFreqPhoton
Energy
  
1mm300GHz1.3meVbeginradio
100000km3.0Hz12×10-15eVendradio

Referenced by:
active galaxy
active galactic nucleus (AGN)
Astronomical Image Processing System (AIPS)
angular resolution
antenna pattern
Arecibo Occultation Survey (AO)
aperture synthesis
Arecibo Observatory (NAIC)
Australian Square Kilometre Array Pathfinder (ASKAP)
Allen Telescope Array (ATA)
Australia Telescope Compact Array (ATCA)
Australia Telescope Large Area Survey (ATLAS)
Bologna Survey of Radio Sources
Cambridge Catalog of Radio Sources (C)
Cassini
Cosmic Anisotropy Telescope (CAT)
Cosmic Lens All-sky Survey (CLASS)
carbon monoxide (CO)
CRATES
curvature radiation
Cygnus A (3C 405)
Dominion Observatory 1420 MHz Source Catalog (DA)
dark nebula
Dominion Observatory 10.03 MHz Source Catalog (DB)
Dwingeloo Obscured Galaxy Survey (DOGS)
downconverter
Dragone telescope
Dominion Radio Astrophysical Observatory (DRAO)
NASA Deep Space Network (NASA DSN)
Earth-sized VLBI
Effelsberg 100-m Radio Telescope
87GB Catalog of Radio Sources (87GB)
electromagnetic spectrum
elevation range
extremely low frequency (ELF)
electromagnetic radiation (EMR)
equatorial mount
FIRST
frequency modulation (FM)
focal plane array (FPA)
fast radio burst (FRB)
Fanaroff-Riley classification
frequency
Green Bank 300ft Telescope (GB300)
Green Bank 6-cm Radio Source Catalog (GB6)
Green Bank Telescope (GBT)
geomagnetic storm
Giant Metrewave Radio Telescope (GMRT)
Gould's Belt Distances Survey (GOBELINS)
Gregorian telescope
infrared (IR)
interference
interferometry
interstellar holography
ionosphere
Institut de radioastronomie millimétrique (IRAM)
IRAM 30m Telescope
Japan Aerospace Exploration Agency (JAXA)
JUICE
Juno
jansky (Jy)
low frequency radio astronomy
light pollution
Low-frequency Array (LOFAR)
LOPES
Lunar Reconnaissance Orbiter (LRO)
magnetic dipole radiation
Mars Express
Mauna Kea
MeerLICHT
Meier paradox
microwave
MIGHTEE
Badgerys Creek Interferometer 101MHz Survey (Mills)
Mauna Kea Observatories (MKO)
MOJAVE
Max Planck Institute for Radio Astronomy (MPIR)
millisecond pulsar (MSP)
multichroic feedhorn array
New Horizons (NF1)
National Radio Astronomy Observatory (NRAO)
Nançay Radio Telescope (NRT)
observatory
occultation observations
Ohio Radio Survey
1 Jansky Empty Field Survey (1 Jy)
optical interferometer
Ooty Radio Telescope (ORT)
Owens Valley Radio Observatory (OVRO)
PAPER
parallax
Parkes Observatory
passband
pointing error (PE)
phased array
Parkes Catalog (PKS)
plasma frequency
Parkes-MIT-NRAO Surveys (PMN)
position-position-velocity space (PPV)
prime focus
Queen's University Radio Observatory (QRO)
quasar (QSO)
radar
radio astronomy
radiometer
radiometer equation
radio relics
radio source counts
radio star
radio telescope
rare designator prefixes
reflector telescope
radio frequency interference (RFI)
radio galaxy (RG)
RASS/Green Bank Catalog (RGB)
Radio Galaxy Zoo (RGZ)
RMS astronomy
Roma-BZCAT
Rosetta
radio source (RS)
spectral energy distribution (SED)
star formation rate (SFR)
super low frequency (SLF)
Submillimeter Telescope (SMT)
software telescope
spectral index (α)
Spektr-R
Sardinia Radio Telescope (SRT)
star formation (SF)
STEREO
Strong Source Surveys
subradio
superluminal motion
telescope
3C 303
3C 9
tremendously low frequency (TLF)
transient
transit telescope
Texas Survey of Radio Sources at 365 MHz (TXS)
ultra low frequency (ULF)
USS Sources
VERA
visible light
Very Large Array (VLA)
Very Long Baseline Array (VLBA)
very low frequency (VLF)
Voyager
Very Small Array (VSA)
wavelength
Westerhout Radio Survey (W)
atmospheric window
Westerbork Synthesis Radio Telescope (WSRT)
young stellar object (YSO)
zone of avoidance (ZOA)

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