Have scientists solved the mystery of gold’s origin in the universe?

Interesting 11:04 06.05.2025

The origins of heavy elements such as gold have been one of the biggest mysteries of astrophysics. According to Al Jazeera, a study has now provided a clue about the precious metal’s cosmic origins.Anirudh Patel, a doctoral student at the Department of Physics at Columbia University in New York, led the study, which used 20-year-old archival telescope data from NASA and European Space Agency telescopes to investigate how heavy elements such as iron and gold were created and distributed throughout the universe.

According to EDnews they have found that explosions in highly magnetised neutron stars, called magnetars, could have created gold in the universe.Analysis of archival data from space missions shows that a large amount of heavy metals, including gold, come from giant flares from magnetars, according to a study published in The Astrophysical Journal Letters on April 29.

The authors estimated that magnetar giant flares could contribute up to 10 percent of the overall abundance of elements in the galaxy that are heavier than iron.Co-authors of the study are affiliated with Columbia University, Charles University in the Czech Republic, Louisiana State University, the Flatiron Institute in New York and Ohio State University.

A magnetar is a type of neutron star that is highly magnetised, which means its magnetic field is extremely powerful. When a massive star explodes, it leaves a very dense, collapsed core behind, which is called a neutron star.

Astronomers theorise that the first magnetars were formed after the first stars about 13.6 billion years ago, according to study coauthor Eric Burns, assistant professor and astrophysicist at Louisiana State University in Baton Rouge. The Big Bang created the universe 13.8 billion years ago.

On rare occasions, magnetars can release high-energy radiation by undergoing a “starquake”. Like an earthquake, a starquake can fracture the magnetar’s crust. Sometimes, magnetar starquakes bring with them a magnetar giant flare, a rare explosive event that releases gamma rays.The researchers found that magnetars release material during giant flares. However, they do not yet have a physical explanation for this.

The researchers speculated about whether magnetar giant flares formed gold through the rapid process of neutrons forging lighter atomic nuclei into heavier ones. An element’s identity is defined by the number of protons it has. However, if an atom acquires an extra neutron, it can undergo nuclear decay, which can turn a neutron into a proton.

Before this study, the creation of gold was attributed only to neutron star collisions, or kilonovas. When astronomers observed a neutron star collision in 2017 through telescopes, they found the collision could create heavy elements such as gold, platinum and lead. However, these collisions are believed to have happened relatively later in the history of the universe, in the past several billion years.

However, the archival telescopic data, which was previously indecipherable, showed that magnetar giant flares formed much earlier. Hence, the study indicates that the first gold could have been made from magnetar giant flares.NASA has an upcoming mission that can follow up on these results. The Compton Spectrometer and Image  is a gamma-ray telescope that is expected to launch in 2027.

It will study energetic phenomena in the Milky Way and beyond, such as magnetar giant flares. According to the NASA website could identify individual elements created in the giant flares, helping to form a better understanding of the origin of the elements.

Madina Mammadova\\EDnews

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