Tag Archive for 'Radio signal'

A section of the Large Magellanic Cloud, captured under normal conditions by SARAO’s MeerKAT radio telescope. It is detecting all radio light, and PSR J0523-7125 looks like just another source of radio light. Image credit: Yuanming Wang.

ASKAP Radio Telescope Discovers New Extragalactic Pulsar

May 3, 2022 by News Staff

PSR J0523-7125, a highly circularly polarized, variable, steep-spectrum pulsar located in the Large Magellanic Cloud, is the brightest extragalactic pulsar...

The position of J0624-6948 (small object at the center of the purple ring indicated by *) is indicated with respect to the Milky Way’s Galactic plane, the Large Magellanic Cloud and the Small Magellanic Cloud. Image credit: Axel Mellinger, Central Michigan University.

ASKAP Finds Rogue Supernova Remnant near Large Magellanic Cloud

Mar 30, 2022 by News Staff

Astronomers using the Australian Square Kilometre Array Pathfinder (ASKAP) have spotted a mysterious circular ring between the Milky Way’s plane and...

MeerKAT Captures Most Detailed Image Yet of ‘Odd Radio Circle’

Mar 22, 2022 by News Staff

Odd Radio Circles are large, circular astronomical objects which are bright around the edges at radio wavelengths. Theories on what causes these mysterious...

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 infrared image, taken by NASA’s Cassini spacecraft, shows an aurora at the southern pole of Saturn. Image credit: NASA / Cassini / VIMS Team / University of Arizona / University of Leicester / JPL / ASI.

Weather Drives Saturn’s Powerful Aurorae, Planetary Scientists Say

Feb 9, 2022 by News Staff

Saturn is unique among planets observed to date in that some of its aurorae are generated by swirling winds within its atmosphere, and not just from the...

An image of the spectral index of radio-emitting filaments in the center of the Milky Way Galaxy. Image credit: Yusef-Zadeh et al., doi: 10.3847/2041-8213/ac4802.

New MeerKAT Image Reveals Radio-Emitting Filaments in Milky Way’s Center

Feb 3, 2022 by News Staff

The new image from the MeerKAT telescope at the South African Radio Astronomy Observatory (SARAO) in Cape Town, South Africa, shows nearly 1,000 magnetized...

The complex, cirrus-like emission from the Galactic center super bubble dominates this MeerKAT image. This is traversed by the Radio Arc, a complex of many parallel radio filaments. The radio bubble nestles against the diffuse Sagittarius A region in the lower center of the image. The bright dot near the center of this region is Sagittarius A*. Image credit: I. Heywood, SARAO.

Astronomers Release Unprecedented Radio Image of Milky Way’s Center

Feb 2, 2022 by Enrico de Lazaro

A new image from the MeerKAT telescope at the South African Radio Astronomy Observatory (SARAO) in Cape Town, South Africa, shows radio emission from numerous...

The Flame Nebula is the large feature on the left half of the central, yellow rectangle. The smaller feature on the right is the reflection nebula NGC 2023. To the top right of NGC 2023, the iconic Horsehead Nebula seems to emerge heroically from the ‘flames.’ The three objects are part of the Orion cloud, a giant gas structure located between 1,300 and 1,600 light-years away. The different colors indicate the velocity of the gas. The Flame Nebula and its surroundings are moving away from us, with the red clouds in the background receding faster than the yellow ones in the foreground. Image credit: ESO / Thomas Stanke / J. Emerson / VISTA / Cambridge Astronomical Survey Unit.

Radio Astronomers Take Close Look at Flame Nebula

Jan 5, 2022 by News Staff

Using the recently-installed SuperCam instrument on ESO’s Atacama Pathfinder Experiment (APEX) in the Atacama Desert, Chile, astronomers have produced...

This MWA image shows Centaurus A at radio wavelengths, revealing vast lobes of plasma that reach far beyond the visible galaxy, which occupies only a small patch at the center of the image. The dots in the background are not stars, but radio galaxies much like Centaurus A, at far greater distances. Image credit: Ben McKinley, ICRAR & Curtin University / Connor Matherne, Louisiana State University.

Radio Astronomers Spot Bipolar Outflow from Centaurus A’s Supermassive Black Hole

Dec 23, 2021 by News Staff

Centaurus A (NGC 5128) is a giant elliptical galaxy 12 million light-years away in the constellation of Centaurus. In its center lies an actively feeding...

This image of Ganymede was obtained by the JunoCam imager aboard NASA’s Juno spacecraft during its June 7, 2021, flyby of the icy moon. Image credit: NASA / JPL-Caltech / SwRI / MSSS.

Juno Records ‘Sounds’ of Jupiter’s Moon Ganymede

Dec 20, 2021 by News Staff

The magnetosphere of Ganymede, the Jupiter’s largest moon, is a source of electric and magnetic radio emissions, which have been monitored by the Waves...

VLA image of the Messier 87 radio jet, made at multiple radio frequencies. The jet seen in this image is about 8,000 light-years long. This image clearly shows the corkscrew-like helical structure in the inner part of the jet, which originates at the bright spot at the left, at the core of the galaxy, where a supermassive black hole resides. Image credit: Sophia Dagnello / NRAO / AUI / NSF / Pasetto et al., doi: 10.3847/2041-8213/ac3a88.

Astronomers Spot Double-Helix Structure in Messier 87

Dec 8, 2021 by News Staff

Astronomers using NSF’s Karl G. Jansky Very Large Array have captured unprecedented high-fidelity radio images of a jet of material propelled from the...

An artist’s impression of the Proxima Centauri system. Image credit: Lorenzo Santinelli.

Signal of Interest from Proxima Centauri Was Not Alien Technosignature, Astronomers Say

Oct 26, 2021 by Natali Anderson

In 2019, astronomers with the Breakthrough Listen project observed Proxima Centauri using CSIRO’s Parkes ‘Murriyang’ radio telescope. They detected...

Illustrated map of Milky Way Galaxy shown with the position and size of proposed filaments; inset shows a more detailed view of the Local environments, and the position of Local Bubble and various nearby dust clouds. Image credit: NASA / JPL-Caltech / R. Hurt, SSC & Caltech / J. West.

Solar System May Be Surrounded by Tunnel-Like Magnetic Structure, Astronomers Say

Oct 19, 2021 by News Staff

The North Polar Spur and the Fan Region are two bright, large-scale radio structures that are seen on opposite sides of the sky. According to new research,...

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...

An artist’s impression of the ASKAP J173608.2-321635 source. Image credit: Sebastian Zentilomo.

Astronomers Find Strange Source of Radio Waves near Milky Way’s Center

Oct 12, 2021 by News Staff

Astronomers using CSIRO’s ASKAP and South African Radio Astronomy Observatory’s MeerKAT radio telescopes have discovered and characterized ASKAP J173608.2-321635,...

Partially processed view of Tycho Crater at a resolution of nearly 5 x 5 m and containing approximately 1.4 billion pixels, taken during a radar project by Green Bank Observatory, National Radio Astronomy Observatory, and Raytheon Intelligence & Space using the Green Bank Telescope and antennas in the Very Long Baseline Array. Image credit: NRAO / GBO / Raytheon / NSF / AUI.

Radio Astronomers Snap High-Resolution Image of Tycho Crater

Sep 22, 2021 by News Staff

Using new radar technology on the 100-m Robert C. Byrd Green Bank Telescope, astronomers have imaged a relatively young lunar crater called Tycho. Partially...

This is an artist's impression of a rocky and water-rich asteroid being torn apart by the strong gravity of the white dwarf star GD 61. Image credit: Mark A. Garlick, Space-art.co.uk / University of Warwick / University of Cambridge.

NASA’s Planetary Radar Spots Its 1,000th Near-Earth Asteroid

Sep 6, 2021 by News Staff

2021 PJ1, a near-Earth asteroid between 20 and 30 m (66-98 feet) across, safely flew past Earth on August 14, 2021 at a distance of over 1.7 million km...

Fast-moving debris from a supernova explosion triggered by a stellar collision in the VT 1210+4956 system crashes into material thrown out earlier, and the shocks cause bright radio emission seen by the VLA. Image credit: Bill Saxton / NRAO / AUI / NSF.

Compact Object Collision with Companion Star Triggers Supernova Event

Sep 2, 2021 by News Staff

Using data collected by the Very Large Array Sky Survey (VLASS), astronomers have found evidence that a compact object — a black hole or neutron...

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...

This image, captured by CSIRO’s ASKAP radio telescope, shows the Large Magellanic Cloud. Image credit: Pennock et al., doi: 10.1093/mnras/stab1858.

Astronomers Create New Radio Map of Large Magellanic Cloud

Aug 19, 2021 by News Staff

Astronomers using CSIRO’s Australian Square Kilometre Array Pathfinder (ASKAP) radio telescope have observed the Large Magellanic Cloud, a small satellite...

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