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Radio telescope network located mainly in the Netherlands
The Low-Frequency Array (LOFAR) is a large radio telescope, with an antenna network located mainly in the Netherlands, and spreading across 7 other European
Low-Frequency_Array
Radio astronomy observatory in New Mexico, US
into the Expanded Very Large Array (EVLA). Beginning in 2001, the upgrade has enhanced the instrument's sensitivity, frequency range, and resolution with
Very_Large_Array
Loudspeaker system composed of linearly-mounted, in-phase speakers
to be arrayed horizontally without behaving as a horizontal line source. Modern line arrays use separate drivers for high-, mid- and low-frequency passbands
Line_array
Radio galaxy located in the constellation of Draco, 8 billion light years away
It is located in the constellation Draco and it was discovered in Low-Frequency Array (LOFAR) data by an international team led by Martijn Oei. Porphyrion
Porphyrion_(radio_galaxy)
3-30 Hz range of the electromagnetic spectrum
Extremely low frequency (ELF) is the ITU designation for electromagnetic radiation (radio waves) with frequencies from 3 to 30 Hz, and corresponding wavelengths
Extremely_low_frequency
Directional radio antenna used in radio astronomy
connected radio telescope array is the Giant Metrewave Radio Telescope, located in Pune, India. The largest array, the Low-Frequency Array (LOFAR), finished in
Radio_telescope
Large radio galaxy
It is located in the constellation Lynx and it was discovered in Low-Frequency Array (LOFAR) data by a team of astronomers led by Martijn Oei. As of 2024
Alcyoneus_(galaxy)
Former radio telescope in Puerto Rico, United States
implemented to carry out observations, with each line feed covering a narrow frequency band measuring 10–45 MHz. A limited number of line feeds could be used
Arecibo_Telescope
Historic Irish reflecting telescope
Receiver Units (RCUs). The Birr Castle station on its own is the Irish Low Frequency Array (I-LOFAR) telescope. In 2018, I-LOFAR observed for the first time
Leviathan_of_Parsonstown
30–300 kHz range of the electromagnetic spectrum
Low frequency (LF) is the ITU designation for radio frequencies (RF) in the range of 30–300 kHz. Since its wavelengths range from 10–1 km, respectively
Low_frequency
Radio telescope at Jodrell Bank Observatory, Cheshire, England
1988. The telescope forms part of the MERLIN and European VLBI Network arrays of radio telescopes. The telescope was influential in the early detections
Lovell_Telescope
Type of phased-array radar
active electronically scanned array (AESA) is a type of phased array antenna, which is a computer-controlled antenna array in which the beam of radio waves
Active electronically scanned array
Active_electronically_scanned_array
Effort to find civilizations not from Earth
used for radio SETI searches, including the Low Frequency Array (LOFAR) in Europe, the Murchison Widefield Array (MWA) in Australia, and the Lovell Telescope
Search for extraterrestrial intelligence
Search_for_extraterrestrial_intelligence
17th-century castle with demesne, telescopes and science museum
I-LOFAR". Irish Low Frequency Array (I-LOFAR). Retrieved 15 March 2025. Van Haarlem, M. P.; et al. (2013). "LOFAR: The LOw-Frequency ARray". Astronomy &
Birr_Castle
Subfield of astronomy that studies celestial objects at radio frequencies
frequencies, synthesised beams less than 1 milliarcsecond are possible. The pre-eminent VLBI arrays operating today are the Very Long Baseline Array (with
Radio_astronomy
Astronomical observatory in Cheshire, England
Bank Observatory hosts the global headquarters of the Square Kilometre Array and is the base of the Multi-Element Radio Linked Interferometer Network
Jodrell_Bank_Observatory
Radio telescope in the Netherlands
also houses most of the staff of ASTRON and a test site for the Low Frequency Array radio telescope, LOFAR. Two galaxies are named after this telescope:
Dwingeloo_Radio_Observatory
Low Frequency Analyzer and Recorder and Low Frequency Analysis and Recording (LOFAR) are the equipment and process respectively for presenting a visual
Low Frequency Analyzer and Recorder
Low_Frequency_Analyzer_and_Recorder
Nonlinear transduction mechanism
parametric array, in the field of acoustics, is a nonlinear transduction mechanism that generates narrow, nearly side lobe-free beams of low frequency sound
Parametric_array
Radio-astronomy observatory in Western Australia
Murchison Widefield Array (MWA), a low-frequency array operating in the frequency range 80–300 MHz the Australian Square Kilometre Array Pathfinder (ASKAP)
Murchison Radio-astronomy Observatory
Murchison_Radio-astronomy_Observatory
Odd radio circle in the constellation Canes Venatici
possible through the Low Frequency Array (LOFAR), the world's largest and most sensitive radio telescope operating at low frequencies between 10 and 240 MHz
RAD_J131346.9+500320
Massive millisecond pulsar in the Milky Way
known within the Milky Way. PSR J0952−0607 was discovered by the Low-Frequency Array (LOFAR) radio telescope during a search for pulsars in 2016. It is
PSR_J0952−0607
Radio telescope in Bad Münstereifel, Germany
The Effelsberg 100-metre Radio Telescope is a radio telescope in the Ahr Hills (part of the Eifel) in Bad Münstereifel, Germany. Inaugurated in 1972, for
Effelsberg 100-metre Radio Telescope
Effelsberg_100-metre_Radio_Telescope
Topics referred to by the same term
refer to: Low-Frequency Array, a large radio telescope system based in the Netherlands Low Frequency Analyzer and Recorder and Low Frequency Analysis and
LOFAR
radio astronomy. The list includes both single dishes and interferometric arrays. The list is sorted by region, then by name; unnamed telescopes are in reverse
List_of_radio_telescopes
Topics referred to by the same term
writer William Mayne (1928–2010) COBALT, a radio correlator; see Low-Frequency Array (LOFAR) § Timeline CoOperative Blending of Autonomous Landing Technologies
Cobalt_(disambiguation)
Australian astrophysicist
telescopes including the Low Frequency Array (LOFAR), the Murchison Widefield Array (MWA) and the upcoming Square Kilometre Array (SKA). She was the director
Melanie_Johnston-Hollitt
Acoustic sensing method
reasonable directionality, frequencies below 1 kHz generally require large size, usually achieved as towed arrays. Low frequency sonars are loosely defined
Sonar
North Pacific Atoll of the United States Minor Outlying Islands
featured two antenna arrays: a low-frequency array covering 2 to 8 MHz and a high-frequency array covering 8 to 32 MHz. Each array consisted of multiple
Midway_Atoll
Range 300-3000 Hz of the electromagnetic spectrum
Ultra low frequency (ULF) is the ITU designation for the frequency range of electromagnetic waves between 300 hertz and 3 kilohertz, corresponding to wavelengths
Ultra_low_frequency
3–30 kHz range of the electromagnetic spectrum
Very low frequency or VLF is the ITU designation for radio frequencies (RF) in the range of 3–30 kHz, corresponding to wavelengths from 100 to 10 km,
Very_low_frequency
International radio telescope project
Kilometre Array (SKA) is an intergovernmental international radio telescope project being built in Australia (low-frequency) and South Africa (mid-frequency).
Square_Kilometre_Array
Array of antennas creating a steerable beam
antenna array must extend many wavelengths to achieve the high gain needed for narrow beamwidth, phased arrays are mainly practical at the high frequency end
Phased_array
Largest type of black hole
Northern celestial hemisphere, based on ultra-low radio wavelengths, as detected by the Low-Frequency Array (LOFAR) in Europe. In August 2025, an SMBH in
Supermassive_black_hole
include the Precision Array for Probing the Epoch of Reionization (PAPER), Low Frequency Array (LOFAR), Murchison Widefield Array (MWA), and Giant Metrewave
Large Aperture Experiment to Detect the Dark Ages
Large_Aperture_Experiment_to_Detect_the_Dark_Ages
Radio observatory in France
Extension in Nançay Upgrading LOFAR) is a very low-frequency phased array optimised for the frequency range from 10 MHz to 85 MHz (30 m to 4 m). These
Nançay_Radio_Observatory
Vibrations with frequencies lower than 20 hertz
Infrasound, sometimes referred to as low frequency sound or (sometimes ambiguously) subsonic (subsonic being a descriptor for "less than the speed of
Infrasound
Gravitational-wave astronomy technique
pulsar timing arrays, the best known is the use of an array of millisecond pulsars to detect and analyse long-wavelength (i.e., low-frequency) gravitational
Pulsar_timing_array
Radio telescope
data acquisition program originally designed for LOPES. LOFAR - The Low-Frequency Array, Radboud University Nijmegen Nigl, A.; Timmermans, C.; Schellart
LORUN
Galaxy in the constellation Coma Berenices
the edge of the disc more clearly than other surveys. Using the LOw-Frequency ARray (LOFAR), astronomers of the University of Hamburg discovered a diffuse
NGC_4565
Navigation system formerly used by aircraft
The low-frequency radio range, also known as the four-course radio range, LF/MF four-course radio range, A-N radio range, Adcock radio range, or commonly
Low-frequency_radio_range
Facility for atmospheric and radio research
43858 Website www.chilbolton.stfc.ac.uk Telescopes Chilbolton Advanced Meteorological Radar Rawlings Array Related media on Commons [edit on Wikidata]
Chilbolton_Observatory
WISE 1019+6529 is a pair of brown dwarfs
MHz highly circularly polarised radio emission detected with the Low Frequency Array (LOFAR). The same paper describes observations with Keck adaptive
WISEPA_J101905.63+652954.2
Array used for astronomical observations
Array (CASA) Infrared Optical Telescope Array (IOTA) Interplanetary Scintillation Array (IPS array) also called the Pulsar Array LOFAR (LOw Frequency
Astronomical_interferometer
Radio telescope array
The Deep Synoptic Array (DSA) is a radio telescope array that will contain 1,650 steerable 6.15-metre (20 ft 2 in) parabolic antennas that observe the
Deep_Synoptic_Array
1974 CIA project to recover the sunken Soviet submarine K-129
south of Monterey, California, isolated a sonic signature on its low-frequency array recordings of an implosion that had occurred on March 8, 1968. Using
Project_Azorian
Canadian radio telescope
receives radio waves from hydrogen in space at frequencies in the 400–800 MHz range. The telescope's low-noise amplifiers are built with components adapted
Canadian Hydrogen Intensity Mapping Experiment
Canadian_Hydrogen_Intensity_Mapping_Experiment
Observatory
The Karl Schwarzschild Observatory (Officially: Thuringia State Observatory Tautenburg) is a German astronomical observatory in Tautenburg near Jena, Thuringia
Karl Schwarzschild Observatory
Karl_Schwarzschild_Observatory
Galaxy cluster
An Italian-led study conducted at low radio frequencies, using data from the European LOFAR (Low Frequency Array) and the Indian Giant Metrewave Radio
Abell_1033
Province of the Netherlands
is an array of fourteen dishes near the village of Westerbork and construction was completed in 1970. Their international Low-Frequency Array with its
Drenthe
Research facility for astrophysics in Germany
Astronomy (OSRA) in Tremsdorf, with four radio antennas in different frequency bands from 40 MHz to 800 MHz Stellar physics: Numerical simulations of
Leibniz Institute for Astrophysics Potsdam
Leibniz_Institute_for_Astrophysics_Potsdam
Observatory
Detail from below Plaque inside the building Historical control electronics Array of brushes. The brushes allowed the mirror to move continuously in the military
Stockert_Radio_Telescope
Astronomical radio interferometer in Hawaii, USA
extended Submillimeter Array). The baseline lengths presently in use range from 16 to 508 meters (52 to 1,667 ft). The radio frequencies accessible to this
Submillimeter_Array
Loudspeaker for low-pitched audio frequencies
loudspeaker designed to reproduce low-pitched audio frequencies, known as bass and sub-bass, that are lower in frequency than those which can be (optimally)
Subwoofer
Astronomical observatories in Hawaii
Ecliptic Plane Survey.In November 2020, in collaboration with Europe's low-frequency ARray radio telescope, Maunakea's Gemini observatory and the NASA Infrared
Maunakea_Observatories
Observatory in northern California, USA
the Western United States. The observatory is home to the Allen Telescope Array and one of the three CHIME FRB outriggers, as well a number of other smaller
Hat_Creek_Radio_Observatory
Observatory
receivers. Event Horizon Telescope: A project to create a large telescope array for observing the immediate environment of the Milky Way's supermassive
Onsala_Space_Observatory
British physicist and academic
interested in radio cosmology and is the Portsmouth representative in the Low-Frequency Array (LOFAR) collaboration, where he was previously joint lead of the
David_Bacon_(cosmologist)
Type of emission nebula created by dying red giants
Cold Plasma in Planetary Nebulae From Radio Observations With the LOw Frequency ARray (LOFAR)". The Astrophysical Journal. 919 (2): 121. arXiv:2107.01112
Planetary_nebula
University of Tasmania; the 22m dish of Mopra, part of the Long Baseline Array, operated by CSIRO; the 25m dish of Sheshan near Shanghai, operated by the
Joint Institute for Very Long Baseline Interferometry European Research Infrastructure Consortium
Joint_Institute_for_Very_Long_Baseline_Interferometry_European_Research_Infrastructure_Consortium
Physics research center
are using the telescope. SERENDIP observations have been conducted at frequencies between 400 MHz and 5 GHz, with most observations near the so-called
Berkeley_SETI_Research_Center
Juridical person and corporation under European Union law
Human Diseases LOFAR ERIC - (LOw Frequency ARray) Distributed Research Infrastructure 2025 CTAO ERIC - Cherenkov Telescope Array Observatory EHRI ERIC - European
European Research Infrastructure Consortium
European_Research_Infrastructure_Consortium
Radio waves produced by the Sun
Large Array, Atacama Large Millimeter Array, Murchison Widefield Array, and Low-Frequency Array. The collage above shows antennas from several low-frequency
Solar_radio_emission
Radar technology that hides its activity from a detected target
Ultra-wideband) Frequency agility, and frequency selection Advanced/irregular scan patterns Coded pulses (coherent detection) High processing gain Low sidelobe
Low-probability-of-intercept radar
Low-probability-of-intercept_radar
Cosmological process in the early universe
such as the Precision Array for Probing the Epoch of Reionization (PAPER), Low Frequency Array (LOFAR), Murchison Widefield Array (MWA), Giant Metrewave
Reionization
an ideal environment to make groundbreaking new observations at this low frequency band, as the ionosphere is avoided and the RFI from the Earth can be
Hongmeng_project
Welsh physicist (1911–1991)
encouraged Imperial Chemical Industries (ICI) to produce the first radio-frequency cables with solid polythene insulation. Further refinements continued
Edward_George_Bowen
Series of supercomputers by IBM
A 2.5 rack Blue Gene/P system is the central processor for the Low Frequency Array for Radio astronomy (LOFAR) project in the Netherlands and surrounding
IBM_Blue_Gene
British physicist and Royal Society Research Fellow
universe when the stars began to radiate light. Chapman works with the Low-Frequency Array telescope (LOFAR). In 2017 Chapman was highly commended in the L'Oréal-UNESCO
Emma_Chapman
Irish education and research network provider
Gbit/s circuit for the I-LOFAR project, Ireland's station in the Low-Frequency Array (LOFAR). From 2016 to 2019, HEAnet carried out a network upgrade
HEAnet
Quasar in the constellation of Virgo
lobe is connected together by a central component. International Low-Frequency Array (LOFAR) radio imaging finds the western lobe is more luminous than
3C_298
Types of celestial objects that can emit gamma-ray bursts
into long-duration radio-bursts, that may be observed by the novel Low Frequency Array (LOFAR). Gamma-ray burst emission mechanisms Quark-nova Ruderman
Gamma-ray_burst_progenitors
System of ten radio telescopes
Baseline Array usually makes radio observations at wavelengths from three millimeters to 90 centimeters, or in other words, at frequencies from 0.3 gigahertz
Very_Long_Baseline_Array
German professor of radio astronomy and astroparticle physics
Jester, Sebastian; Falcke, Heino (May 2009). "Science with a lunar low-frequency array: from the dark ages of the Universe to nearby exoplanets". New Astronomy
Heino_Falcke
Chinese radio astronomy experiment
Yu, Zijie; Zhang, Jiao; Zhang, Juyong; Zuo, Shifan, The Tianlai dish array low-z surveys forecasts, Monthly Notices of the Royal Astronomical Society
Tianlai_experiment
Dutch astronomer
Westerbork Synthesis Radio Telescope and Low-Frequency Array to discover that Fast Radio Bursts can be seen at low frequencies, and that their periodicity cannot
Joeri_van_Leeuwen
Radio telescope in Western Australia
Widefield Array (MWA) is a joint project between an international consortium of organisations to construct and operate a low-frequency radio array. "Widefield"
Murchison_Widefield_Array
Project to analyze the ionosphere
(IRI). This is a high-power, high-frequency phased array radio transmitter with a set of 180 antennas, disposed in an array of 12×15 units that occupy a rectangle
High-frequency Active Auroral Research Program
High-frequency_Active_Auroral_Research_Program
Research institute in Bangalore, India
centre at Bengaluru and the setting up at Gauri Bidanur of a large low frequency array for studies of galactic and extragalactic structure. In 1971, the
Indian Institute of Astrophysics
Indian_Institute_of_Astrophysics
Citizen science platform
starforming galaxies and active galactic nuclei from data gathered by the Low-Frequency Array (LOFAR) radio telescope. 25 Feb 2020 AI4 Mars Annotation Help scientists
Zooniverse
Subwoofer speaker layout
to have one array on the floor and the other on the ceiling, or one on the left wall and the other on the right. However, low frequencies become localizable
Double_bass_array
US naval surveillance vessel
SURTASS passive and active low frequency sonar arrays to detect and track undersea threats.[citation needed] The SURTASS Low Frequency Active Sonar system,
USNS_Impeccable
Towed array sonar system
Towed-Array Sensor System (SURTASS) NOAA Fisheries Office of Protected Resources - Surveillance Towed Array Sensor System (SURTASS) Low Frequency Active
AN/UQQ-2 Surveillance Towed Array Sensor System
AN/UQQ-2_Surveillance_Towed_Array_Sensor_System
US Navy research ship
Cylindrical Array designed and built by the Westinghouse Oceanic Division of Annapolis, MD; and a Low Frequency Array of vertical line arrays designed and
USNS_Hayes
X-ray space observatory
confirmed coronal mass ejection on a star other than the sun using its low frequency array. Spaceflight portal Astronomy portal X-ray astronomy List of X-ray
XMM-Newton
New class of galactic astronomical transients - LPTs
wide-field surveys at gigahertz frequencies. Low-Frequency Array (LOFAR), Europe — has contributed discoveries at low radio frequencies, including high-declination
Long_period_radio_transient
Observatory in the United Kingdom
Synthesis Telescope The receiver from the e-MERLIN array Surviving Yagi antennas of the Cambridge Low Frequency Synthesis Telescope Two Half-Mile Telescopes
Mullard Radio Astronomy Observatory
Mullard_Radio_Astronomy_Observatory
Brightest cluster galaxy of Abell 2390
kiloparsecs according to radio imaging made by Low Frequency Array (LOFAR). Atacama Large Millimeter Array (ALMA) in 2024 detected traces of molecular gas
Abell_2390_BCG
30–300 GHz range of the electromagnetic spectrum
Extremely high frequency (EHF) is the electromagnetic band from 30 to 300 gigahertz (GHz), as designated by the International Telecommunication Union
Extremely_high_frequency
Object detection system using radio waves
operate effectively at relatively low frequencies. This was important in the early development of this type when high-frequency signal generation was difficult
Radar
Passive retrodirective phased array antenna
A Van Atta array is a type of passive retrodirective phased array antenna which redirects (rather than reflects) a signal back in the direction from which
Van_Atta_array
Range 3-30 GHz of the electromagnetic spectrum
boresight. Another type of antenna practical at microwave frequencies is the phased array, consisting of many dipoles or patch antennas on a flat surface
Super_high_frequency
Type of radio antenna array, used mainly for early radio navigation
navigation system for aviation. The low frequency radio range (LFR) network, which consisted of hundreds of Adcock antenna arrays, defined the airways used by
Adcock_antenna
System used to generate stable voltages, that may be used to define a volt
economics of providing a very high frequency microwave source. While stable arrays have been demonstrated at frequencies as low as 24 GHz, most practical standards
Josephson_voltage_standard
Turkish long range radar system
can be tracked at the same time: 200-300 Broadcast frequency: S Band Antenna: Active phased array 3-dimensional target search, detection and tracking
Aselsan_EIRS
Electronic control system
and output frequencies. By incorporating a frequency divider, a PLL can generate a stable frequency that is a multiple of the input frequency. These properties
Phase-locked_loop
nitrogen LOAN – Longitude of ascending node LOFAR – (telescope) LOw Frequency ARray, for radio astronomy LONEOS – (observing program) Lowell Observatory
List_of_astronomy_acronyms
Cold War-era passive, fixed array undersea surveillance system
on bottom arrays of hydrophones. The system, using equipment termed Low Frequency Analyzer and Recorder and a process termed Low Frequency Analysis and
SOSUS
A radio-frequency microelectromechanical system (RF MEMS) is a microelectromechanical system with electronic components comprising moving sub-millimeter-sized
Radio-frequency microelectromechanical system
Radio-frequency_microelectromechanical_system
Device that transmits and receives radio waves
gain) become more practical at higher frequencies (UHF and above). At low frequencies (such as AM broadcast), arrays of vertical towers are used to achieve
Antenna_(radio)
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