Science

Milky Way's first microblazar may produce fastest particles in the galaxy

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Briefings

An international team identified the first microblazar in the Milky Way, a system containing a massive star and a black hole jet directed at Earth. The jet strikes a molecular cloud, accelerating particles to ultra-high energies, potentially reaching up to petaelectronvolts. This discovery suggests microblazars are among the most powerful particle accelerators in the galaxy, with findings published in Astronomy & Astrophysics.

Key points

• Astronomers from ASTRON, JIVE, and the University of Amsterdam identified the first microblazar in the Milky Way, a stellar system with a massive star and a black hole jet pointed toward Earth.
• The jet strikes a molecular cloud, accelerating particles to ultra-high energies, likely up to petaelectronvolts, making microblazars one of the most powerful particle accelerators in the galaxy.

Context and limitations

The research appears in Astronomy & Astrophysics; specific dates for the discovery are not provided, and the exact energy limits remain estimates rather than confirmed measurements.

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