Read the full article at: https://phys.org/news/2025-05-tev-halos-common-feature-middle.html

Pulsars are rapidly spinning neutron stars—remnants of massive star explosions—that blast electromagnetic radiation at regular intervals ranging from seconds to milliseconds. As a pulsar rotates, its beams of radiation sweep across outer space like a cosmic lighthouse. Scientists have identified high-energy gamma-ray emission around some pulsars, called TeV halos, but it remains unclear whether TeV [...]

Read the full article at: https://wipac.wisc.edu/hawc-detection-of-high-energy-gamma-ray-emission-surrounding-middle-aged-pulsars/

Read the full article at: https://physics.aps.org/articles/v18/s59

An ultra-high-energy neutrino, a galactic PeVatron, and a fading quasar at cosmic dawn are the subjects of today's Monthly Roundup.

The post Monthly Roundup: News from the High-Energy Universe appeared first on AAS Nova.

Read the full article at: https://aasnova.org/2025/03/31/monthly-roundup-news-from-the-high-energy-universe/

This story is adapted from the HAWC Collaboration press release. Microquasars—compact regions surrounding a black hole with a mass several times that of its companion star—have long been recognized as powerful particle accelerators within our galaxy. The enormous jets spewing out of microquasars are thought to play an important role in the production of galactic cosmic rays, although [...]

Read the full article at: https://wipac.wisc.edu/hawc-detection-of-an-ultra-high-energy-gamma-ray-bubble-around-a-microquasar/

This story is modified from one originally published by AAS Nova. Where do the highest-energy particles in the universe come from? New research led by WIPAC researchers suggests that the sources of ultra-high-energy cosmic rays aren’t necessarily the sources of ultra-high-energy photons as well. Cosmic Rays Across the Universe Across the universe, extremely energetic charged particles called cosmic [...]

Read the full article at: https://wipac.wisc.edu/seeking-the-sources-of-ultra-high-energy-cosmic-rays/

The Department of Physics is pleased to announce that Ke Fang, assistant professor of physics and WIPAC investigator, has received the inaugural Bernice Durand Faculty Fellowship. This fellowship, given in honor of late Professor Emerit …

Read the full article at: https://www.physics.wisc.edu/2024/05/08/fang-durand-fellowship/

UW–Madison’s 2024 Sloan Fellows are Ke Fang, assistant professor of physics, and Xiangyao Yu, assistant professor of computer sciences.

Read the full article at: https://news.wisc.edu/two-uw-madison-researchers-receive-prestigious-sloan-fellowships/

Much of what we understand about fundamental physics is based on experiments done in the convenient “lab” of earth. But our planet is just one location, with its own relatively mild electromagnetic field. Do forces …

Read the full article at: https://www.physics.wisc.edu/2023/08/22/ke-fang-ellen-zweibel-earn-simons-foundation-funding-to-study-electrodynamics-in-extreme-environments/

For the first time, the IceCube Neutrino Observatory has produced an image of the Milky Way using neutrinos — tiny, ghostlike astronomical messengers.

Read the full article at: https://news.wisc.edu/icecube-shows-milky-way-galaxy-is-a-neutrino-desert/