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High Energy Photons

All articles tagged with #high energy photons

astronomy2 years ago

Unveiling the Brightest Gamma-Ray Burst in History.

Scientists from the Large High Altitude Air Shower Observatory (LHAASO) have published a groundbreaking study on the gamma-ray burst (GRB) GRB 221009A, an astronomical event resulting from the explosion of a massive star two billion years ago. LHAASO observed the complete high-energy light curve that other experiments have yet to reach, providing a perfect data base for precise tests of theoretical models. The study challenges current theoretical models and provides invaluable data for understanding GRB mechanisms.

via SciTechDaily|
#astronomy#astrophysics#gamma-ray-burst
astronomy2 years ago

Unraveling the Mystery of the Strangest and Brightest Cosmic Explosions

The Large High Altitude Air Shower Observatory (LHAASO) has recorded the entire process of a tera-electron volt gamma-ray burst (GRB) from the death of a massive star, named GRB 221009A. LHAASO's observations have provided a perfect database for precise tests of theoretical models. The rapid enhancement of photon flux at the beginning of the afterglow exceeds the expectations of previous theoretical models, leading to discussions within the scientific community regarding the mechanisms involved in GRBs. LHAASO's data-intensive observations at high-energy will reveal more mysteries.

via Phys.org|
#afterglow#astronomy#gamma-ray-burst
astronomy2 years ago

Unprecedented Brightness: Unique Features of Cosmic Explosions Observed.

The Large High Altitude Air Shower Observatory (LHAASO) captured data from the brightest supernova yet observed, known as the BOAT, providing new information on gamma-ray bursts. The data suggests that lower energy events are caused by the jets interacting with the turbulent debris of the supernova, while higher energy photons are produced in areas where the jets have cleared the supernova debris and are starting to interact with the material that formed the environment around the star. The BOAT was as bright as observed because the central core of its jet was pointed directly at Earth.

via Ars Technica|
#astronomy#gamma-ray-burst#high-energy-photons