These joint efforts support the pathfinder for ngVLA technologies, focusing on very long baseline interferometry (VLBI) capabilities that enable ultra-sharp imaging of the Universe.
Recent News
Astronomers Detect Magnetic Fingerprint of a Cosmic Explosion for the First Time
Using the U.S. National Science Foundation Very Large Array (NSF VLA) radio telescope, which is operated by the U. S. National Science Foundation National Radio Astronomy Observatory (NSF NRAO), the team detected polarized light from a gamma-ray burst (GRB) afterglow for the first time at radio wavelengths.
NSF VLA Sky Survey Sets New Standard for High-Resolution, Wide-Area Radio Astronomy
The U.S. National Science Foundation National Radio Astronomy Observatory (NSF NRAO) has completed observations for the Very Large Array Sky Survey (VLASS), the most detailed radio survey of the sky ever conducted.
Image Release: Mysterious Phenomena in a Gigantic Galaxy-Cluster Collision
Researchers using the Karl G. Jansky Very Large Array (VLA) have produced the most detailed image yet of a fascinating region where clusters of hundreds of galaxies are colliding, creating a rich variety of mysterious phenomena visible only to radio telescopes.
The scientists took advantage of new VLA capabilities to make a “true color” radio image. This image shows the region as it would appear if human eyes were sensitive to radio waves instead of light waves. In this image, red shows where longer radio waves predominate, and blue shows where shorter radio waves predominate, following the pattern we see in visible light.
The image shows a number of strange features the astronomers think are related to an ongoing collision of galaxy clusters. The region is called Abell 2256, and is about 800 million light-years from Earth and some 4 million light-years across. The image covers an area in the sky almost as large as the full moon. Studied by astronomers for more than half a century with telescopes ranging from radio to X-ray, Abell 2256 contains a fascinating variety of objects, many of whose exact origins remain unclear.
With monikers such as “Large Relic,” “Halo,” and “Long Tail,” the features in this region are seen in greater fidelity than ever before, said Frazer Owen, of the National Radio Astronomy Observatory (NRAO). “The image reveals details of the interactions between the two merging clusters and suggests that previously unexpected physical processes are at work in such encounters,” he said.
Owen worked with Lawrence Rudnick of the University of Minnesota; Jean Eilek of New Mexico Tech; and Urvashi Rau, Sanjay Bhatnagar, and Leonid Kogan of NRAO. The researchers presented their results in the Astrophysical Journal.
The National Radio Astronomy Observatory is a facility of the National Science Foundation, operated under cooperative agreement by Associated Universities, Inc.
###
Contact:
Dave Finley, Public Information Officer
(575) 835-7302
[email protected]
Recent News
U.S. National Science Foundation, NSF National Radio Astronomy Observatory and U.S. Naval Observatory Partner on Pathfinder for Next Generation Very Large Array
These joint efforts support the pathfinder for ngVLA technologies, focusing on very long baseline interferometry (VLBI) capabilities that enable ultra-sharp imaging of the Universe.
Astronomers Detect Magnetic Fingerprint of a Cosmic Explosion for the First Time
Using the U.S. National Science Foundation Very Large Array (NSF VLA) radio telescope, which is operated by the U. S. National Science Foundation National Radio Astronomy Observatory (NSF NRAO), the team detected polarized light from a gamma-ray burst (GRB) afterglow for the first time at radio wavelengths.
NSF VLA Sky Survey Sets New Standard for High-Resolution, Wide-Area Radio Astronomy
The U.S. National Science Foundation National Radio Astronomy Observatory (NSF NRAO) has completed observations for the Very Large Array Sky Survey (VLASS), the most detailed radio survey of the sky ever conducted.