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Repeating radio signal leads astronomers to an Earth-size exoplanet

April 9, 2023

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Astronomers have detected a repeating radio signal from an exoplanet and the star that it orbits, both located 12 light-years away from Earth. The signal suggests that the Earth-size planet may have a magnetic field and perhaps even an atmosphere.

Earth’s magnetic field protects the planet’s atmosphere, which life needs to survive, by deflecting energetic particles and plasma that stream out from the sun. Finding atmospheres around planets located outside of our solar system could point to other worlds that potentially have the ability to support life.

Scientists noticed strong radio waves coming from the star YZ Ceti and the rocky exoplanet that orbits it, called YZ Ceti b, during observations using the Karl G. Jansky Very Large Array of telescopes in New Mexico. The researchers believe

Astronomers Just Found a Radio Galaxy That Turned Into a Blazar : ScienceAlert

April 6, 2023

Astronomers have observed a rare case of a galaxy shapeshifting.

A few decades ago, an object located some 630 million light-years away named PBC J2333.9-2343 was classified as a giant radio galaxy. It projected large, radio-emitting structures perpendicular to our line of sight, formed by colossal jets that once erupted from the galactic center.

More recent observations, however, reveal that the galaxy’s core has switched back on, and is now aiming its jet directly towards us.

That’s nothing to be alarmed about; in fact, it’s fairly common. So common, in fact, we have a name for it; a blazar. With its new classification, the blazar PBC J2333.9-2343 could give us a deeper understanding of how galaxies can transform, even on human timescales.

Galaxies come in a range of shapes and sizes, but they also have different activity levels based on the activity of the supermassive black holes at their

SETI Institute and Oxford University Astronomers Discover Early Radio Emission from a Spectacular Cosmic Explosion

April 3, 2023

The Allen Telescope Array (ATA) based in Hat Creek Radio Astronomy Observatory, California, USA. The ATA is operated by the SETI institute, designed as an instrument dedicated to technosignature searches, it has the potential to be a powerful facility for the study of transients. Image Credit: Joe Marfia.

March 28, 2023, Mountain View, CA – A team of astronomers from the SETI Institute, Oxford University, and other institutions worked together to study the earliest stages of the Universe’s most powerful explosions. The team was able to capture detailed information about a gamma radio burst (GRB) called the “Brightest of All Time” (BOAT), also known as GRB 221009A. The international team recorded radio emissions just three hours after the explosion, providing unparalleled insight into the jet’s properties as it rapidly evolved. The research team included astronomers from the UK, USA, Australia, the Netherlands, Italy, and South Africa. They used data from

Mysterious radio signal reveals intricate core of galaxy cluster

March 24, 2023

A puzzling radio emission from a galactic cluster located in the constellation may come from the 1.66 million light-year-long radio tail of its dominating central galaxy.

The team that made this discovery also found evidence of mergers between galaxies in the cluster Abell 1213, which is in the constellation of Ursa Major and is located around 647 million light-years from Earth. The findings are the result of astronomers investigating an anomalous radio emission from Abell 1213. In 2009, observations with the Very Large Array (VLA), comprised of 28 radio antennas spread across the Plains of New Mexico, revealed the presence of a diffuse extended emission from the cluster.

This was initially believed to be from a radio halo, a large-scale source of diffuse (spread out) radio emissions found at the heart of a select few galactic clusters that are created when electrons moving in a circle are accelerated to near-light

Tag: radio

Repeating radio signal leads astronomers to an Earth-size exoplanet

Astronomers Just Found a Radio Galaxy That Turned Into a Blazar : ScienceAlert

SETI Institute and Oxford University Astronomers Discover Early Radio Emission from a Spectacular Cosmic Explosion

Mysterious radio signal reveals intricate core of galaxy cluster