The [CII] Resolved ISM in STar-forming galaxies with ALMA (CRISTAL survey) peered back to when the Universe was only about one billion years old – a mere toddler in cosmic terms. These observations are helping scientists understand how galaxies formed and evolved from primordial gas clouds into the organized structures we see today.
Recent News
NSF NRAO Leads Critical Spectrum Studies to Safeguard Radio Astronomy
The U.S. National Science Foundation National Radio Astronomy Observatory (NSF NRAO) has received funding to expand its study of an invisible—and crucial—scientific and technological resource: the radio spectrum.
Largest Oort Cloud Comet Ever Observed Reveals Its Secrets with ALMA’s Powerful Gaze
A team of astronomers has made a groundbreaking discovery by detecting molecular activity in comet C/2014 UN271 (Bernardinelli-Bernstein)—the largest and second most distantly active comet ever observed from the Oort Cloud.
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.
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Recent News
ALMA Reveals Stunning Details of Infant Galaxies in the Early Universe
The [CII] Resolved ISM in STar-forming galaxies with ALMA (CRISTAL survey) peered back to when the Universe was only about one billion years old – a mere toddler in cosmic terms. These observations are helping scientists understand how galaxies formed and evolved from primordial gas clouds into the organized structures we see today.
NSF NRAO Leads Critical Spectrum Studies to Safeguard Radio Astronomy
The U.S. National Science Foundation National Radio Astronomy Observatory (NSF NRAO) has received funding to expand its study of an invisible—and crucial—scientific and technological resource: the radio spectrum.
Largest Oort Cloud Comet Ever Observed Reveals Its Secrets with ALMA’s Powerful Gaze
A team of astronomers has made a groundbreaking discovery by detecting molecular activity in comet C/2014 UN271 (Bernardinelli-Bernstein)—the largest and second most distantly active comet ever observed from the Oort Cloud.