A major photo voltaic storm that occurred in May 2024 led to the formation of two momentary radiation belts round Earth, as confirmed by satellite tv for pc knowledge. The discovery was made when a dormant satellite tv for pc resumed operations after months of inactivity. The storm, which was among the many most intense geomagnetic disturbances since 1989, resulted in widespread auroral shows and launched high-energy particles into the Earth’s magnetosphere. While such momentary belts have been documented earlier than, scientists have discovered that one of many newly fashioned belts exhibited distinctive properties, with a composition completely different from earlier observations. One of the belts has already dissipated, however the different stays intact, posing potential challenges for future area missions.
Temporary Radiation Belts Detected Following Intense Solar Activity
According to analysis revealed within the Journal of Geophysical Research: Space Physics, the Colorado Inner Radiation Belt Experiment (CIRBE) satellite tv for pc recognized the brand new radiation belts upon reactivation in June 2024. The spacecraft had gone silent as a result of a technical problem in April, lacking the height of the storm. Upon its return, knowledge evaluation revealed the existence of two further belts located between the pre-existing Van Allen radiation belts.
It was decided that whereas the primary belt contained high-energy electrons, per earlier storm-induced radiation belts, the second belt displayed an uncommon focus of high-energy protons. This presence of protons was linked to the acute nature of the photo voltaic storm, which had launched important bursts of charged particles into Earth’s magnetic discipline.
Extended Lifespan of the Newly Formed Belts
Temporary radiation belts generated by photo voltaic storms are recognized to persist for weeks earlier than dispersing. However, as per the findings, the electron-dominated belt remained for 3 months, whereas the proton-rich belt remains to be current. David Sibeck, a heliophysicist at NASA’s Goddard Space Flight Center, acknowledged in an interview with Space.com that these particles may keep trapped for an prolonged interval, creating an enduring affect on Earth’s interior radiation setting.
The proton belt’s resilience is attributed to its location in a extra steady area of Earth’s magnetic discipline, the place exterior disturbances have much less affect. In distinction, a subsequent photo voltaic storm in June 2024 brought on a discount within the electron belt, with additional weakening noticed in August. Despite this, the proton belt has remained largely unaffected.
Implications for Space Missions and Satellite Operations
The existence of those new radiation belts has raised issues relating to the protection of satellites and crewed area missions. Charged particles at excessive vitality ranges can pose dangers to digital parts and human well being in area. Spacecraft passing by means of these areas, notably these touring to geostationary orbit or past, might require further shielding to mitigate radiation publicity.
As reported, the presence of those belts may necessitate changes in launch plans for future missions. With extended radiation hazards, area companies might have to issue within the evolving area climate situations earlier than deploying satellites or sending astronauts past Earth’s orbit.
Despite the CIRBE satellite tv for pc’s essential discovery, the identical photo voltaic exercise that led to the identification of the brand new radiation belts additionally brought on the spacecraft’s eventual demise. The elevated vitality injected into the environment resulted in better drag, which led to CIRBE’s descent and disintegration in October 2024.
The affect of photo voltaic storms on Earth’s magnetosphere continues to be carefully monitored, with scientists learning how these phenomena have an effect on each planetary and technological techniques.
