Tag Archive for 'LOFAR'

Artistic illustration showing the radio pulses emitted by the binary star system: a white dwarf in orbit around a red dwarf. Image credit: Daniëlle Futselaar / artsource.nl.

Sporadic Radio Pulses Traced to White Dwarf-Red-Dwarf Binary System

Mar 12, 2025 by News Staff

Astrophysicists have found that a recently-discovered transient radio source, ILT J110160.52+552119.62, whose roughly minute-long pulses arrive with a...

The J1601+3102 radio jet. Image credit: LOFAR / DECaLS / DESI Legacy Imaging Surveys / LBNL / DOE / CTIO / NOIRLab / NSF / AURA / F. Sweijen, Durham University / M. Zamani, NSF NOIRLab.

Monster Two-Lobed Radio Jet Detected in Early Universe

Feb 6, 2025 by News Staff

The newly-discovered radio jet spans an astonishing 215,000 light-years, and is associated with J1601+3102, an extremely radio-loud quasar that existed...

Multiwavelength image of the massive galaxy cluster SDSS J1531+3414. Image credit: NASA / CXC / SAO / Omoruyi et al. / STScI / Tremblay et al. / ASTRON / LOFAR / NASA / CXC / SAO / N. Wolk.

Astronomers Detect Mega-Eruption from Supermassive Black Hole in Distant Galaxy Cluster

Feb 22, 2024 by News Staff

Some of the gas sent gas away from the supermassive black hole — which is located in the center of the galaxy cluster SDSS J1531+3414 (SDSS J1531...

The I-LOFAR radio telescope. Image credit: I-LOFAR.

Astronomers Use Multi-Telescope Technique to Scan Milky Way for Alien Technosignatures

Oct 25, 2023 by Natali Anderson

Astronomers from Trinity College Dublin, the Breakthrough Listen project and Onsala Space Observatory have demonstrated the effectiveness of using multisite...

Noise variations in the two regions covered by the second data release from the LOw-Frequency ARray (LOFAR) Two-metre Sky Survey with the coverage of the 841 individual pointing outlined. The RA-13 (top) and RA-1 (bottom) regions span 4,178 and 1,457 square degrees and have median rms values of 74 μJy beam−1 and 106 μJy beam−1 respectively. Failed facets (white regions) are generally caused by either poor ionospheric conditions or dynamic range issues around bright sources such as 3C 48 and 3C 196. Image credit: Shimwell et al., doi: 10.1051/0004-6361/202142484.

LOFAR Radio Telescope Maps More Than Quarter of Northern Sky

Feb 28, 2022 by News Staff

In the second data release from the ongoing LOw-Frequency ARray (LOFAR) Two-metre Sky Survey, astronomers present radio images covering 27% of the northern...

This radio-infrared image shows the radio galaxy Alcyoneus. Image credit: Oei et al., arXiv: 2202.05427.

LOFAR Telescope Spots Biggest Radio Galaxy Ever

Feb 16, 2022 by Natali Anderson

The newly-discovered radio galaxy, dubbed Alcyoneus, has a projected length of 16.3 million light-years (4.99 Mpc). This radio-infrared image shows the...

Red dwarfs flare actively and expel particles that can alter and evaporate the atmospheres of planets in their orbit. Image credit: Leibniz Institute for Astrophysics Potsdam / J. Fohlmeister.

LOFAR Detects Coherent Radio Emission from 19 Red Dwarfs

Oct 13, 2021 by News Staff

Astronomers using the Low Frequency Array (LOFAR), a large radio telescope network located mainly in the Netherlands, have detected coherent low-frequency...

A compilation of the new science results from LOFAR. Image credit: Ramírez-Olivencia et al. / NASA, ESA / Hubble Heritage Team / STScI / AURA / A. Evans, University of Virginia, Charlottesville / NRAO / Stony Brook University / R. Cumming / C. Groeneveld / R. Timmerman / LOFAR / Kukreti / Sloan Digital Sky Survey / A. Kappes / F. Sweijen / DESI Legacy Imaging Survey / S. Badole / L. Calcada / W.L. Williams.

LOFAR Captures Most Detailed Images Ever Seen of Distant Galaxies

Aug 19, 2021 by News Staff

Using data from the Low Frequency Array (LOFAR), a radio telescope that operates at frequencies between 10 and 240 MHz and consists of 52 stations spread...

A burst from FRB 180916 arrives at the LOFAR telescope; the higher frequency radio waves (purple) arrive earlier than the lower frequency radio waves (red); the inset shows an optical image from the host galaxy of the fast radio burst source and the position of the source in the host galaxy. Image credit: D. Futselaar / S.P. Tendulkar / ASTRON.

LOFAR Detects Lowest-Frequency Fast Radio Bursts to Date

Apr 16, 2021 by Enrico de Lazaro

Using the Low-Frequency Array (LOFAR), astronomers from the Canadian Hydrogen Intensity Mapping Experiment (CHIME) have found that fast radio bursts include...

This is an artistic impression of a red dwarf star’s magnetic interaction with its exoplanet. Image credit: Danielle Futselaar, Artsource.nl.

Terrestrial-Mass Exoplanet Found Orbiting Red Dwarf Gliese 1151

Feb 9, 2021 by Natali Anderson

Magnetic interactions between the newfound planet, designated Gliese 1151b, and its host star are the likely source of low-frequency radio emission recently...

Astronomers Discover New Supercluster of Galaxies

Jan 5, 2021 by Sergio Prostak

Using data from the eROSITA X-ray telescope aboard the Spektrum-Roentgen-Gamma (SRG) observatory, astronomers have detected a previously unknown supercluster...

An artist’s impression of the hot-Jupiter exoplanet tau Boötis b. Image credit: L. Calçada / ESO.

LOFAR Detects Radio Emission from Tau Boötis Planetary System

Dec 16, 2020 by Enrico de Lazaro

Astronomers using the LOw Frequency Array (LOFAR), a large radio telescope network located mainly in the Netherlands, have detected circularly polarized...

An artist’s impression of BDR J1750+3809. Image credit: Danielle Futselaar / ASTRON.

LOFAR Radio Telescope Directly Detects New Brown Dwarf

Nov 9, 2020 by News Staff

Astronomers using the Low-Frequency Array (LOFAR) radio telescope have discovered a new brown dwarf, a substellar object not quite massive enough to fuse...

Astronomers Find New Way to Study Planets around Red Dwarf Stars

Feb 19, 2020 by News Staff

Using the Low Frequency Array (LOFAR) radio telescope, astronomers have observed radio waves that carry the distinct signatures of extraterrestrial aurorae,...

LOFAR image centered on the Abell 0399-Abell 0401 system; color and contours show the radio emission at 140 MHz; the faceting of the field is shown with red lines. Image credit: Govoni et al, doi: 10.1126/science.aat7500.

LOFAR Telescope Sees Ridge of Radio-Emitting Plasma between Two Merging Galaxy Clusters

Jun 10, 2019 by News Staff

Astronomers using the Low-Frequency Array (LOFAR) telescope network have detected a vast ridge of radio emission connecting the merging galaxy clusters...

PSR J0952-0607 (lower right) rotates 707 times a second and now ranks as second-fastest pulsar known. The location of LOFAR’s first millisecond pulsar discovery, PSR J1552+5437, which spins 412 times a second, is shown at upper left. Image credit: NASA / DOE / Fermi LAT Collaboration / ASTRON.

Second-Fastest-Spinning Pulsar Found

Sep 6, 2017 by News Staff

An international team of astronomers has discovered a pulsar — the core of a massive star that exploded as a supernova — spinning at more than...

The center of the galaxy Messier 82 at very long radio wavelengths; the bright points are most likely supernova remnants; the image is about 3,300 light years across. Image credit: E. Varenius / Onsala Space Observatory / LOFAR Collaboration.

LOFAR Radio Telescope Observes Messier 82 (Cigar Galaxy)

Jan 29, 2015 by News Staff

The Low Frequency Array (LOFAR) radio telescope has been used to observe the glowing center of the starburst galaxy Messier 82 at very long radio wavelengths. The...