Thursday 01 May 2025
A team of scientists has made a significant breakthrough in understanding how solar flares, massive explosions on the surface of the sun, affect the surrounding space environment. By analyzing data from NASA’s MAVEN spacecraft and other instruments, researchers have discovered that resonant excitation – a phenomenon where radiation from the sun interacts with atoms in the corona – plays a crucial role in driving coronal EUV emission during flares.
Solar flares are intense releases of energy on the surface of the sun, releasing an enormous amount of electromagnetic radiation into space. These events can impact Earth’s magnetic field and even disrupt satellite communications. To better understand how they work, scientists have been studying the interaction between the sun’s radiation and the surrounding plasma – a gas-like state of matter that makes up about 99% of the universe.
The new study focused on the role of resonant excitation in coronal EUV emission during flares. The researchers found that as radiation from the sun interacts with atoms in the corona, it causes them to resonate at specific frequencies, amplifying the emission of extreme ultraviolet (EUV) light. This EUV light is a crucial diagnostic tool for understanding the behavior of plasma in the corona and its impact on space weather.
One of the key findings of the study was that resonant excitation can significantly increase the brightness of EUV emission near the flare site, making it a more important contributor to total solar irradiance than previously thought. This has significant implications for our understanding of how solar flares affect the surrounding space environment and could help scientists better predict space weather events.
The researchers used data from NASA’s MAVEN spacecraft, which is designed to study the interaction between the sun and the Martian atmosphere, as well as other instruments, including the Solar Extreme Ultraviolet Monitor on the Mars Atmosphere and Volatile EvolutioN (MAVEN) mission. By analyzing this data, they were able to create detailed models of how resonant excitation affects coronal EUV emission during flares.
This study is an important step forward in our understanding of solar flares and their impact on space weather. As scientists continue to study the sun and its behavior, we can gain a better understanding of these powerful events and develop more accurate predictions for when they might occur.
Cite this article: “Unlocking the Secrets of Solar Flare Radiation”, The Science Archive, 2025.
Solar Flares, Coronal Euv Emission, Resonant Excitation, Space Weather, Plasma, Nasa, Maven Spacecraft, Extreme Ultraviolet Light, Solar Irradiance, Martian Atmosphere
