A team of researchers from Penn State has detected a mysterious signal that could reveal new insights into cosmic events, despite being undetectable by most high-powered telescopes. The signal, known as an “anomalous” event, was detected using a specialized detector in Antarctica, which can capture sensitive neutrino signals even in small amounts.
The researchers used radio detectors to build large neutrino telescopes and are exploring ways to detect even fainter signals. One such detector, ANITA, flew over the Antarctic ice at 40 kilometers above, capturing what are called “ice showers” caused by high-energy particles interacting with the ice. These particles produce secondary emissions that can be detected as radio signals.
The team analyzed data from multiple ANITA flights and compared it with mathematical models and simulations to filter out background noise. They then cross-referenced their findings with other independent detectors, such as IceCube Experiment and Pierre Auger Observatory, to confirm that the signal was not due to known particle-based signals.
However, further analysis revealed that the signal did not fit within the standard picture of particle physics, leaving room for theories about dark matter. The researchers are now designing a new detector, PUEO, which will be larger and more sensitive than previous detectors. They hope that PUEO will shed light on what exactly the anomalous signal is.
The discovery highlights the importance of continued funding for research in physics and astronomy. As federal funding cuts threaten to impact innovation, researchers like those at Penn State are working tirelessly to solve real problems that impact our health, safety, and quality of life.
Source: https://www.psu.edu/news/research/story/strange-radio-pulses-detected-coming-ice-antarctica