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Showing results 71 - 80 of 258
ImageContest
NRAO Image Contest Celebrates VLA 40th Anniversary
July 27, 2020 at 10:00 am | Announcement

To help celebrate the VLA’s 40th anniversary, the National Radio Astronomy is conducting an image contest, and offering cash prizes for visually compelling works that incorporate radio observational data from the VLA.

Radio/Optical composite image of 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 RELEASE: Magnetic Field of a Spiral Galaxy
July 21, 2020 at 10:00 am | News Release

A new image from the VLA dramatically reveals the extended magnetic field of a spiral galaxy seen edge-on from Earth.

NRAO crew moves a VLA antenna, using new procedures to maintain social distancing and protect them from COVID-19. Face masks and sanitizing supplies are only some of the extensive adjustments made to what had been a routine operation.
NRAO Science Continues Despite the Virus
June 24, 2020 at 12:00 pm | News Feature

Something done routinely for decades — move VLA antennas into a new configuration — suddenly became challenging because of COVID-19. With careful planning and a lot of teamwork, the NRAO staff got the job done to keep the scientific research going.

Artist 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.
Supergiant Atmosphere of Antares Revealed by Radio Telescopes
June 16, 2020 at 8:00 am | News Release

An international team of astronomers has created the most detailed map yet of the atmosphere of the red supergiant star Antares.

When a pair of young protostars called IRAS 4A was observed at millimeter wavelengths, left, the "hot corino" of complex organic molecules surrounding one of the stars was obscured by dust. Observations with the VLA at longer wavelengths that pass through dust revealed the dust-enshrouded hot corino.
Astronomers Find Elusive Target Hiding Behind Dust
June 8, 2020 at 6:00 am | News Release

Some young, still-forming stars are surrounded by regions of complex organic molecules called “hot corinos.” In some pairs of young stars forming together as binary pairs, astronomers found a hot corino around one, but not the other. Guessing that the unseen one might be obscured by dust, researchers studied such a pair with the VLA at radio wavelengths that readily pass through dust, and found the other one.

Artist's conception illustrates the phenomena that make up the new class of cosmic explosions called Fast Blue Optical Transients.
Astronomers Discover New Class of Cosmic Explosions
May 26, 2020 at 11:00 am | News Release

Analysis of two cosmic explosions indicates to astronomers that the pair, along with a puzzling blast from 2018, constitute a new type of event, with similarities to some supernovae and gamma-ray bursts, but also with significant differences.

Artist's conception of a brown dwarf and its magnetic field. The magnetic field, rooted deep in its interior, rotates at a different rate than the top of the atmosphere. The difference allowed astronomers to determine the object's wind speed.
Astronomers Measure Wind Speed on a Brown Dwarf
April 9, 2020 at 2:00 pm | News Release

Using VLA and Spitzer observations, astronomers are able to determine wind speeds on a brown dwarf for the first time. They believe the technique also could be used for exoplanets.

ALMA and the VLA observed more than 300 protostars and their young protoplanetary disks in Orion. This image shows a subset of stars, including a few binaries. The ALMA and VLA data compliment each other: ALMA sees the outer disk structure (visualized in blue), and the VLA observes the inner disks and star cores (orange).
How Newborn Stars Prepare for the Birth of Planets
February 20, 2020 at 10:00 am | News Release

An international team of astronomers used ALMA and the VLA to create more than three hundred images of planet-forming disks around very young stars in the Orion Clouds. These images reveal new details about the birthplaces of planets and the earliest stages of star formation.

A new signal-processing system that the SETI Institute will add to the VLA is part of a technology-driven revitalization of research in the Search for Extraterrestrial Intelligence.
New Technologies, Strategies Expanding Search for Extraterrestrial Life
February 11, 2020 at 1:58 pm | News Release

New technologies that enable new strategies are revitalizing the Search for Extraterrestrial Intelligence (SETI), by not only augmenting the traditional search for intelligently-generated radio signals but also allowing searches for other signs of life and technological activity.

Data from the VLA's observations will be provided to a new signal-processing system built by the SETI Institute. This will allow an additional use -- searching for signs of extraterrestrial technologies -- for the data already being generated by the VLA.
NRAO, SETI Institute Agree on New Research Programs
February 11, 2020 at 1:25 pm | Announcement

NRAO and the SETI Institute will develop a new system to provide VLA data to an advanced signal processor that will seek to detect signs of extraterrestrial technologies.

Showing results 71 - 80 of 258