A fast radio burst phenomenon called FRB 20220610A flashed in an unlikely location: a collection of at least seven galaxies that existed when the universe was only 5 billion years old. Most fast radio bursts to date have been found in isolated galaxies.
This Hubble image shows the host galaxy of the extremely powerful fast radio burst FRB 20220610A. Image credit: NASA/ESA/STScI/Alexa Gordon, Northwestern University.
FRB 20220610A was first detected by the Australian Square Kilometer Array Pathfinder (ASKAP) radio telescope in Western Australia on June 10, 2022.
ESO's Very Large Telescope confirmed that the FRB came from a distant place. The Fed was four times more energetic than its closer counterpart.
“We needed Hubble's acuity and sensitivity to pinpoint the source of the FRB,” said Northwestern University astronomer Alexa Gordon.
“Without Hubble's images, it will remain a mystery whether this arose from a monolithic galaxy or some kind of interacting system.”
“It's these kinds of environments, these strange environments, that are driving us to a deeper understanding of the Fed's mysteries.”
Hubble's sharp images suggest that FRB 20220610A arose in an environment where up to seven galaxies could be on a potential path to a merger, which is also very significant.
“We're ultimately trying to answer the question: What causes this? What are their ancestry and their origin?” said Wen-Fai Fung, an astronomer at Northwestern University. Ta.
“Hubble observations provide an incredible view of the surprising types of environments that give rise to these mysterious events.”
Although hundreds of FRBs have been detected, their ancestry is unknown. One of the leading candidates is magnetars.
They have magnetic fields so strong that if a magnetar were to be located halfway between the Earth and the Moon, it would erase the magnetic stripes on everyone's credit cards around the world.
Even worse, if the astronaut traveled within a few hundred miles of the magnetar, they would effectively be dissolved, as every atom in their body would be destroyed.
Possible mechanisms include some kind of shocking starquake, or an explosion triggered when the magnetar's twisted magnetic field lines break and recombine.
A similar phenomenon occurs on the Sun, causing solar flares, but the magnetar's magnetic field is a trillion times more powerful than the Sun's magnetosphere.
This snap can cause a flash of the FRB or create a shock wave that incinerates the surrounding dust and heats the gas to create a plasma.
There can be several types of magnetars. In some cases, it could be an explosive object orbiting a black hole surrounded by a disk of matter.
Another option is a pair of orbiting neutron stars whose magnetospheres interact periodically to create cavities in which eruptions can occur.
Magnetars are estimated to be active for about 10,000 years before becoming permanent, and are expected to be discovered in areas where violent storms of star formation occur. However, this does not seem to be the case for all magnetars.
In the near future, the sensitivity of FRB experiments will improve and FRBs will be detected at unprecedented rates at these distances.
“We need to continue to find more of these FRBs in different types of environments, both near and far,” Dr. Gordon said.
Astronomers announced that findings in AAS243243rd Meeting of the American Astronomical Society, New Orleans, Louisiana, USA.
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alexa gordon other. 2024. Revealing the environment of the most distant FRB with the Hubble Space Telescope. AAS243summary #3679
Source: www.sci.news
