All articles tagged with #helmet streamer
A 19-day-long Type IV solar radio burst—the longest on record—was observed by four spacecraft (STEREO, Parker Solar Probe, Wind, and Solar Orbiter). Researchers traced the event to a large helmet streamer energized by three rapid coronal mass ejections, explaining why some solar radio bursts persist for days and aiding space weather forecasting. The findings were published in The Astrophysical Journal Letters.
NASA scientists tracked a Type IV solar radio burst that lasted 19 days in August 2025—the longest on record—originating from a helmet streamer in the Sun’s atmosphere. The event may have been sustained by three coronal mass ejections and was observed by a fleet of missions (STEREO, Parker Solar Probe, Wind, Solar Orbiter) across the inner solar system, enabling a detailed timeline. Understanding these long-lasting bursts could improve space weather forecasts and protect satellites and spacecraft.
Four NASA missions captured a record-breaking 19-day solar radio burst originating from a helmet streamer in the Sun’s corona, likely powered by multiple coronal mass ejections; researchers developed a new technique to localize the source, aiding space-weather forecasting.
A 19-day Type IV solar radio burst from a helmet streamer, likely re-energized by three CMEs, suggests coronal magnetic structures can trap electrons for weeks, making the event a persistent rather than transient structure and prompting a rethink of how solar activity and exoplanet habitability are modeled.