Tag Archive for 'VLA'

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...

Astronomers Discover New Dark-Matter-Free Galaxy

Dec 7, 2021 by News Staff

Astronomers from the Netherlands, the United Kingdom and the United States have found no trace of dark matter in AGC 114905, a gas-rich ultra-diffuse galaxy...

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...

An artist’s conception of Cep A HW2, showing a wide-angle wind originating close to the star and an accretion disk, with a much narrower jet farther away. Image credit: Bill Saxton, NRAO, AUI & NSF.

VLA Focuses on Inner Region of Massive Protostellar Jet

Jun 3, 2021 by News Staff

Astronomers using NSF’s Karl G. Jansky Very Large Array (VLA) have observed the fast-moving jet of material ejected by Cep A HW2, a massive protostar...

This overlay shows radio (orange) and infrared images of the giant molecular cloud W49A, where new stars are being formed. Image credit: De Pree et al. / Sophia Dagnello, NRAO / AUI / NSF / Spitzer / NASA.

Astronomers Take Closer Look at Giant Molecular Cloud W49A

May 5, 2021 by Natali Anderson

Astronomers using NSF’s Karl G. Jansky Very Large Array (VLA) have captured new, high-resolution radio images of a massive star-forming region called...

This composite image, taken by the Very Large Array and Hubble, shows the galaxy cluster MACS J0717.5+3745. Pullout shows the distant galaxy J0717+3745, far beyond the cluster, and likely the faintest radio-emitting object ever detected. The prominent red-orange objects are radio relics -- large structures possibly caused by shock waves -- inside MACS J0717.5+3745. Image credit: Heywood et al. / Sophia Dagnello, NRAO / AUI / NSF / STScI.

Gravity of Giant Cluster Magnifies Light and Radio Waves from Distant Galaxy

Mar 17, 2021 by Enrico de Lazaro

The newly-discovered galaxy, named VLAHFF-J071736+374506 (J0717+3745 for short), is likely the faintest radio-emitting object yet found, according to astronomers...

This artist’s impression shows how the distant quasar PSO J172.3556+18.7734 and its radio jets may have looked. Image credit: M. Kornmesser / ESO.

Astronomers Discover Most Distant Known Cosmic Jet

Mar 8, 2021 by News Staff

Astronomers using several ground-based telescopes have spotted the most distant cosmic jet discovered so far. Its source is PSO J172.3556+18.7734, a radio-loud...

The central part of the total field of view of the VLA radio map of the Perseus cluster. NGC 1275 is the bright source in the middle of the image. The wide-angle tail radio galaxy NGC 1265 (NNW of NGC 1275) and the head-tail CR 15 (between NGC 1275 and IC 310), as well as IC 310 (WSW of NGC 1275) are clearly visible. Image credit: Gendron-Marsolais et al., doi: 10.1093/mnras/staa2003.

Astronomers Create Radio Map of Perseus Galaxy Cluster

Jan 4, 2021 by Sergio Prostak

Astronomers using NSF’s Karl G. Jansky Very Large Array have produced a high-resolution map of the Perseus cluster, a collection of thousands of galaxies...

VLBA image of PSO J0309+27. Image credit: Spingola et al. / Bill Saxton / NRAO / AUI / NSF.

Astronomers Observe Bright Relativistic Jet from Distant Blazar

Dec 23, 2020 by Enrico de Lazaro

Astronomers have observed a bright one-sided jet of material ejected at three-quarters the speed of light from the core of the blazar PSO J030947.49+271757.31...

Astronomers Catch Radio Jets from Distant Quasars

Nov 20, 2020 by News Staff

Using data from the Very Large Array Sky Survey (VLASS), astronomers have detected young radio-emitting jets from supermassive black holes in distant active...

This image shows the glow from the GRB 200522A kilonova caused by the merger of two neutron stars. Image credit: NASA / ESA / W. Fong, Northwestern University / T. Laskar, University of Bath.

Hubble Detects Unexplained Near-Infrared Emission from Neutron-Star Merger

Nov 13, 2020 by News Staff

Several billion years ago, a short gamma-ray burst unleashed more energy in a half-second than our Sun will produce over its entire 10-billion-year lifetime....

This composite image shows the edge-on spiral galaxy NGC 4217. Magnetic field lines (green), revealed by the VLA, extend far above and below the plane of the galaxy. Image credit: Y. Stein, Centre de Données astronomiques de Strasbourg / NRAO / SDSS / KPNO / J. English, University of Manitoba / R.-J. Dettmar & A. Miskolczi, Ruhr-Universität Bochum / R.J. Rand, U.N.M. / J. Irwin, Queen’s University.

Radio Telescope Sees X-Shaped Magnetic Field of NGC 4217

Jul 21, 2020 by News Staff

An international team of radio astronomers has used data from NSF’s Karl G. Jansky Very Large Array (VLA) to generate a detailed map of the magnetic...

An artist’s impression of the atmosphere of Antares. As seen with the naked eye (up until the photosphere), Antares is around 700 times larger than our sun, big enough to fill the Solar System beyond the orbit of Mars (Solar System scale shown for comparison). But ALMA and VLA showed that its atmosphere, including the lower and upper chromosphere and wind zones, reaches out 12 times farther than that. Image credit: NRAO / AUI / NSF / S. Dagnello.

Radio Telescopes Reveal Lukewarm Atmosphere of Nearby Red Supergiant Star Antares

Jul 3, 2020 by News Staff

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) and NSF’s Karl G. Jansky Very Large Array (VLA) have created the most detailed...

An artist’s impression of DLA0817g (Wolfe Disk), a massive, rotating disk galaxy in the early, dusty Universe. Image credit: NRAO / AUI / NSF / S. Dagnello.

Massive, Rotating Disk Galaxy Spotted 12.3 Billion Light-Years Away

May 20, 2020 by News Staff

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have found evidence for the most distant rotationally supported disk galaxy ever...

An artist’s conception of 2MASS J10475385+2124234 illustrates magnetic field and atmosphere’s top, which were observed at different wavelengths to determine wind speeds. Image credit: Bill Saxton, NRAO / AUI / NSF.

Powerful Winds Blow in Atmosphere of Nearby Brown Dwarf

Apr 10, 2020 by News Staff

Brown dwarfs are cool, dim objects that have a size between that of a gas giant, such as Jupiter or Saturn, and that of a Sun-like star. Sometimes called...

This composite image shows the Orion Molecular Clouds, the target of the VANDAM survey. Yellow dots are the locations of the observed protostars on a blue background image made by ESA’s Herschel Space Observatory. Side panels show nine young protostars imaged by ALMA (blue) and the VLA (orange). Image credit: ALMA / ESO / NAOJ / NRAO / J. Tobin / AUI / NSF / S. Dagnello / Herschel / ESA.

Astronomers Observe Hundreds of Protoplanetary Disks in Orion Molecular Clouds

Feb 26, 2020 by News Staff

Using NSF’s Karl G. Jansky Very Large Array (VLA) and the Atacama Large Millimeter/submillimeter Array (ALMA), astronomers have captured images of 328...

An artist’s conception of a dwarf galaxy, its shape distorted, most likely by a past interaction with another galaxy, and a massive black hole in its outskirts (pullout). The black hole is drawing in material that forms a rotating disk and generates jets of material propelled outward. Image credit: Sophia Dagnello, NRAO / AUI / NSF.

Wandering Massive Black Holes Detected in Nearby Dwarf Galaxies

Jan 21, 2020 by News Staff

Astronomers using NSF’s Karl G. Jansky Very Large Array (VLA) at the National Radio Astronomy Observatory have observed 111 nearby dwarf galaxies within...

NGC 4631 is seen edge-on, with its disk of stars shown in pink; the filaments, shown in green and blue, extend beyond the disk into the galaxy’s extended halo; green indicates filaments with their magnetic field pointing roughly toward us and blue with the field pointing away; this phenomenon, with the field alternating in direction, has never before been seen in the halo of a galaxy. This VLA image shows a companion galaxy -- a small elliptical galaxy called NGC 4627 -- just above NGC 4631. Image credit: Jayanne English, University of Manitoba / Silvia Carolina Mora-Partiarroyo & Marita Krause of the Max-Planck Institute for Radioastronomy / Maria Patterson & Rene Walterbos, New Mexico State University / Arpad Miskolczi, University of Bochum / NRAO.

Astronomers Spot Huge Magnetic Structures in ‘Whale Galaxy’

Nov 28, 2019 by News Staff

Astronomers using NSF’s Karl G. Jansky Very Large Array (VLA) have captured a new image of the edge-on barred spiral galaxy NGC 4631 (also known as ‘Whale...

This image of the Phoenix Cluster combines X-ray, radio and optical data; side panels show the individual images making up the composite. Image credit: NASA / CXC / MIT / M. McDonald et al / NRAO / AUI / NSF / STScI.

Enormous Black Hole Boosts Star Formation in Phoenix Galaxy Cluster

Nov 22, 2019 by News Staff

Supermassive black holes in the center of galaxy clusters usually suppress star formation, but the one in the Phoenix Cluster, a group of about 1,000 galaxies...

An artist’s impression of the GRB 190114C jet over time, and the small patches of magnetic fields. Image credit: Laskar et al.

Astronomers Capture First Polarized Radio Signal from Gamma-Ray Burst

Jun 21, 2019 by News Staff

Gamma-ray bursts (GRBs) are the most energetic explosions in the Universe, beaming out mighty jets which travel through space at 0.99 times the speed of...

123