Using data from the National Science Foundation’s Very Large Array, an international team of astronomers has for the first time detected circular polarization in radio emission originating from a massive protostar, IRAS 18162-2048 — unveiling fresh clues about the cosmic forces shaping our universe.
Recent News
Space’s Spinning Enigma: A ‘Unicorn’ Object Defies Astrophysics
Researchers have identified an exceptionally unusual cosmic object known as a Long Period Radio Transient (LPT), named CHIME J1634+44.
Astronomers Discover Massive Molecular Cloud Hidden in Milky Way
In a new study published in the Astrophysical Journal, researchers using the U.S. National Science Foundation Green Bank Telescope (NSF GBT) have peered into a molecular cloud known as M4.7-0.8, nicknamed the Midpoint cloud. Their observations have revealed a dynamic region bustling with activity, including potential sites of new star formation.
IMAGE RELEASE: A Blazar In the Early Universe
The supersharp radio “vision” of the National Science Foundation’s Very Long Baseline Array (VLBA) has revealed previously unseen details in a jet of material ejected at three-quarters the speed of light from the core of a galaxy some 12.8 billion light-years from Earth. The galaxy, dubbed PSO J0309+27, is a blazar, with its jet pointed toward Earth, and is the brightest radio-emitting blazar yet seen at such a distance. It also is the second-brightest X-ray emitting blazar at such a distance.
In this image, the brightest radio emission comes from the galaxy’s core, at bottom right. The jet is propelled by the gravitational energy of a supermassive black hole at the core, and moves outward, toward the upper left. The jet seen here extends some 1,600 light-years, and shows structure within it.
At this distance, PSO J0309+27 is seen as it was when the universe was less than a billion years old, or just over 7 percent of its current age.
An international team of astronomers led by Cristiana Spingola of the University of Bologna in Italy, observed the galaxy in April and May of 2020. Their analysis of the object’s properties provides support for some theoretical models for why blazars are rare in the early universe. The researchers reported their results in the journal Astronomy & Astrophysics.
The National Radio Astronomy Observatory is a facility of the National Science Foundation, operated under cooperative agreement by Associated Universities, Inc.
CREDIT: Spingola et al.; Bill Saxton, NRAO/AUI/NSF.
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This news article was originally published on the NRAO website on December 22, 2020.
Recent News
Groundbreaking Magnetic Field Discovery Near Massive Protostar
Using data from the National Science Foundation’s Very Large Array, an international team of astronomers has for the first time detected circular polarization in radio emission originating from a massive protostar, IRAS 18162-2048 — unveiling fresh clues about the cosmic forces shaping our universe.
Space’s Spinning Enigma: A ‘Unicorn’ Object Defies Astrophysics
Researchers have identified an exceptionally unusual cosmic object known as a Long Period Radio Transient (LPT), named CHIME J1634+44.
Astronomers Discover Massive Molecular Cloud Hidden in Milky Way
In a new study published in the Astrophysical Journal, researchers using the U.S. National Science Foundation Green Bank Telescope (NSF GBT) have peered into a molecular cloud known as M4.7-0.8, nicknamed the Midpoint cloud. Their observations have revealed a dynamic region bustling with activity, including potential sites of new star formation.