Tag

High Energy

All articles tagged with #high energy

Lightning in a Box Could Shrink Thunderstorms to Tabletop Size
science1 month ago

Lightning in a Box Could Shrink Thunderstorms to Tabletop Size

Penn State researchers propose a tiny, deck-of-cards-sized solid block that could replicate the electrical conditions of a thunderstorm, triggering lightning‑like radiation via a relativistic runaway electron avalanche. The “lightning‑in‑a‑box” is theoretical for now and would require experimental confirmation with common insulating materials; if proven feasible, it could let scientists study lightning at desktop scale, reducing the cost and scale of traditional field experiments.

"eROSITA Unveils Largest X-ray Sky Survey Catalog with 900,000 High-Energy Cosmic Sources"
astronomy-and-astrophysics2 years ago

"eROSITA Unveils Largest X-ray Sky Survey Catalog with 900,000 High-Energy Cosmic Sources"

The German eROSITA consortium has released the largest X-ray catalog ever published, containing about 900,000 distinct sources from the first eROSITA All-Sky Survey (eRASS1). The data, which includes scientific papers describing new results, will revolutionize our knowledge of the universe at high energies. The catalog covers half the X-ray sky and includes supermassive black holes, X-ray-emitting stars, clusters of galaxies, and other exotic sources. The release also provides images of the X-ray sky, individual photon lists, and software for data analysis, with cosmology results expected in approximately two weeks.

Unprecedented Discovery: Pulsar Emission Reaches Unprecedented Energy Levels
science2 years ago

Unprecedented Discovery: Pulsar Emission Reaches Unprecedented Energy Levels

Scientists using the H.E.S.S. observatory in Namibia have detected the highest energy gamma rays ever from a pulsar, reaching 20 tera-electronvolts. This discovery challenges current theories on the production of pulsed gamma rays and requires a rethinking of how these natural accelerators work. The Vela pulsar now holds the record for the pulsar with the highest-energy gamma rays discovered to date, opening up new possibilities for understanding extreme acceleration processes in highly magnetized astrophysical objects.