NASA Reveals Shocking Truth About Gold’s Origin
For years, the origin of the universe’s most massive elements—such as gold, platinum, and uranium—remained a mystery. However, new research suggests that magnetars, extremely magnetic neutron stars, might hold the key to understanding these elements.
Key Role of Magnetars in Gold Formation
A study by Anirudh Patel, a Ph.D. student at Columbia University, proposes that magnetars could have played a crucial role in the formation and dispersal of heavy elements across the universe. The study, published in The Astrophysical Journal Letters, suggests that bursts from these unusual stars could have contributed significantly to the formation of heavy elements above iron.
Cosmic Flares as Elemental Creators
NASA reports that in the early universe, only hydrogen, helium, and small quantities of lithium were present. Gold, platinum, and uranium, everything heavier, would have been created afterward, usually inside stars. However, the actual processes that generated the very earliest of these heavy elements were an enigma.
According to Patel, his researchers looked back to almost two-decade-old data from ESA and NASA telescopes, finding that giant flares from magnetars could be responsible for as much as 10% of the heavy elements in our galaxy. Because magnetars formed early in the life of the universe, they could have been among the first cosmic goldsmiths for gold and other precious elements.
Stellar Violence and Element Creation
Magnetars are extremely dense remnants of supernova explosions. Their immense magnetic fields lead to "starquakes," shattering their crusts and spewing out outbreaks of high-energy radiation in the form of magnetar flares. Such outbursts are so energetic they influence Earth’s atmosphere, even though they take place thousands of light-years from Earth.
Patel and his colleagues theorize that these outbursts of violence from the stars could build heavy elements during an r-process, or process of rapid neutron capture. Such a process results when atomic nuclei capture neutrons at a swift rate, gaining mass and transforming into new atoms via radioactive disintegration.
Confirming the Theory
According to NASA reports, in 2017, the universe saw heavy elements being created in the merger of two neutron stars, giving direct evidence of the r-process. Yet, such cosmic mergers happen too rarely and too late to account for the early existence of elements such as gold. Patel’s team investigated if magnetar flares, being more frequent and happening earlier, could be the missing link.
The team first considered visible or ultraviolet light for providing hints, but Eric Burns recommended considering gamma rays because of their penetrating abilities and distinctive signatures. That change in direction prompted them to re-examine data from a strong magnetar flare observed in 2004 by ESA’s retired INTEGRAL satellite.
To their surprise, the gamma-ray signal in the data exactly replicated what their theoretical models had shown. "I wasn’t thinking about anything else for the next week," Patel recalled of the epiphany moment. Independent confirmation came later with archival observations from NASA’s RHESSI and Wind satellites, both of which had observed the same flare independently and reinforced the team’s conclusion.
New Era in Astrophysics
This finding has opened a new frontier in astrophysics. NASA’s next COSI mission, launching in 2027, will be a wide-field gamma-ray telescope that will investigate cosmic explosions. It might directly observe the creation of certain elements during magnetar flares, possibly validating Patel’s hypothesis.
Meanwhile, researchers are sifting through other ancient telescope data, searching for similar gamma-ray signatures left behind by previous flares. The thought that a phenomenon as brutal as a magnetar flare was behind the gold in wedding bands or the platinum in cellphones is humbling and awe-provoking.
"It’s kind of nice to consider that some of the material in my phone or laptop was created through this intense explosion," Patel mused, reliving the marvel of following commonplace materials back to celestial catastrophes billions of years ago.
Reference : https://timesofindia.indiatimes.com/science/where-does-gold-really-come-from-nasa-data-reveals-the-shocking-truth/articleshow/120785654.cms
