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H. Zhang

5 articles · 30 co-authors · latest: 2026-05-26

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

Radon Hides Dark Matter

Scientists found that noise in dark matter detectors is caused by radon. Its atoms settle on internal metal grids and, when decaying, mimic signals from elusive particles. The created model matched data from the LUX and LZ experiments. This will help purify future experiments and maybe finally catch
arXiv:2602.21177 · 2026-02-24

Tuning Into the Hum of Spinning Stars

If neutron stars had tiny bumps, they would constantly hum with gravitational waves. Using LIGO, scientists searched for that hum from 34 pulsars, the largest search of its kind. No signals were found, which pushes the theoretical limits even lower. The Crab pulsar, for instance, turns less than 0.0
arXiv:2603.25938 · 2026-03-26

Record Haul: 161 Black Hole Mergers in Gravitational Waves

The updated GWTC-5.0 catalog includes 161 recent gravitational-wave bursts from black hole collisions. Thanks to improved detector sensitivity, some signals are now record-breakingly clear, allowing for more precise measurements of black hole masses and stricter tests of relativity. The total number
arXiv:2605.27225 · 2026-05-26