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Jie Li

3 articles · 30 co-authors · latest: 2026-02-23

Star explosions accelerate particles to record energies

The LHAASO observatory studied gamma-ray emission from supernova remnant IC 443 and found that particles there are accelerated to record energies with no signs of slowing down. This is direct confirmation: it's star explosions that produce the most energetic cosmic rays bombarding Earth.
arXiv:2510.26112 · 2025-10-30

Solar Storm Illuminated Magnetic Fields in Space

Usually, cosmic rays arrive evenly from all directions, but when the Sun ejects a magnetic cloud, their paths bend. On November 4, 2021, the LHAASO observatory caught a temporary lopsidedness, offering the first-ever glimpse of invisible magnetic structures in interplanetary space.
arXiv:2601.02801v1 · 2026-01-06

Magnons in a sphere squeezed to quantum limit

Quantum noise is like a balloon: you can squeeze it by redistributing uncertainty. Instead of light, scientists used magnons—waves in a magnetic material. A millimeter-sized sphere of a special crystal was coupled with a qubit and cooled until the waves inside almost disappeared. A special measureme
arXiv:2602.19671 · 2026-02-23