Astrophysics (Index)About

radio

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

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


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

Referenced by pages:
active galaxy
active galactic nucleus (AGN)
Astronomical Image Processing System (AIPS)
angular resolution
antenna pattern
Arecibo Occultation Survey (AO)
aperture synthesis
Arecibo Observatory (NAIC)
ARGOS
Australian Square Kilometre Array Pathfinder (ASKAP)
Allen Telescope Array (ATA)
Australia Telescope Compact Array (ATCA)
Australia Telescope Large Area Survey (ATLAS)
BIMA telescope
black-body radiation
blazar
Bologna Survey of Radio Sources
Breakthrough Listen (BL)
Cambridge Catalog of Radio Sources (C)
Cassini
Cosmic Anisotropy Telescope (CAT)
Canadian Hydrogen Intensity Mapping Experiment (CHIME)
Cosmic Lens All-sky Survey (CLASS)
core collapse supernova (CCSN)
counterpart
CRATES
curvature radiation
Cygnus A (3C 405)
Dominion Observatory 1420 MHz Source Catalog (DA)
dark nebula
dark sky
Dominion Observatory 10.03 MHz Source Catalog (DB)
Dwingeloo Obscured Galaxy Survey (DOGS)
downconverter
Dragone telescope
Dominion Radio Astrophysical Observatory (DRAO)
DSA-2000
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
fast folding algorithm (FFA)
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)
G band
Green Bank Observatory (GBO)
Green Bank Telescope (GBT)
Galactic Emission Mapping (GEM)
geomagnetic storm
Giotto
Giant Metrewave Radio Telescope (GMRT)
Gould's Belt Distances Survey (GOBELINS)
Gregorian telescope
Hydrogen Accretion in Local Galaxies Survey (HALOGAS)
high-B radio pulsar (HBRP)
high frequency (HF)
International Cometary Explorer (ICE)
IM­AGE
infrared (IR)
interference
interferometer
interferometry
interstellar holography
ionosphere
Institut de radioastronomie millimétrique (IRAM)
IRAM 30m Telescope
Japan Aerospace Exploration Agency (JAXA)
JUICE
Juno
K band
low frequency radio astronomy
light pollution
Low-frequency Array (LOFAR)
LOPES
Lunar Reconnaissance Orbiter (LRO)
magnetic dipole radiation
magnitude
Mars Express
Mars Observer (MO)
Mauna Kea
MeerLICHT
Meier paradox
MERLIN
microwave
MIGHTEE
Badgerys Creek Interferometer 101MHz Survey (Mills)
Mauna Kea Observatories (MKO)
Magnetospheric Multiscale Mission (MMS)
MOJAVE
millisecond pulsar (MSP)
multichroic feedhorn array
NEAR Shoemaker (NEAR)
New Horizons (NF1)
National Radio Astronomy Observatory (NRAO)
Nançay Radio Telescope (NRT)
observatory
occultation observations
Ohio Radio Survey (OSS)
1 Jansky Empty Field Survey (1 Jy)
optical interferometer
Ooty Radio Telescope (ORT)
Owens Valley Radio Observatory (OVRO)
PALFA
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
pulsar (PSR)
Pioneer Venus Orbiter (PVO)
pulsar wind nebula (PWN)
quad-ridge flare horn (QRFH)
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
rotating radio transient (RRAT)
radio source (RS)
spectral energy distribution (SED)
search for extraterrestrial intelligence (SETI)
star formation rate (SFR)
super low frequency (SLF)
Submillimeter Telescope (SMT)
software telescope
Solar Orbiter (SolO)
space weather
specific intensity
spectral index (α)
spectral line designation
Spektr-R
Sardinia Radio Telescope (SRT)
star formation (SF)
STEREO
Strong Source Surveys
subradio
Sun surface features
superluminal motion
synchronous orbit
telescope
Trace Gas Orbiter (TGO)
Thermal Bremsstrahlung
3C 303
3C 9
tremendously low frequency (TLF)
transient
transit telescope
Texas Survey of Radio Sources at 365 MHz (TXS)
ultra low frequency (ULF)
Ulysses
USS Sources
UTMOST
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)
Wien's displacement law
atmospheric window
Westerbork Synthesis Radio Telescope (WSRT)
young stellar object (YSO)
Yuan-Tseh Lee Array (YTLA)
zone of avoidance (ZOA)

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