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Record-Breaking Cosmic Rays Discovered from Microquasar V4641

6/27/2025

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Summary

Story summary

Astronomers have made a groundbreaking discovery with the microquasar V4641 Sagittarii, situated 20,000 light-years away, unleashing cosmic rays with photons exceeding 200 teraelectronvolts—setting a new record in the Milky Way. This revelation, supported by the High-Altitude Water Cherenkov Observatory in Mexico, hints at microquasars playing a vital role in the creation of galactic cosmic rays alongside supernovae.

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Story summary

Astronomers have made a groundbreaking discovery with the microquasar V4641 Sagittarii, situated 20,000 light-years away, unleashing cosmic rays with photons exceeding 200 teraelectronvolts—setting a new record in the Milky Way. This revelation, supported by the High-Altitude Water Cherenkov Observatory in Mexico, hints at microquasars playing a vital role in the creation of galactic cosmic rays alongside supernovae.