All articles tagged with #high energy astrophysics
New analysis of DAMPE data finds a universal spectral softening around 15 TeV across multiple high-energy cosmic-ray nuclei, suggesting rigidity—not energy per nucleon—shapes cosmic-ray behavior and tightening constraints on acceleration models; the result, published in Nature, was aided by AI-based event reconstruction and DAMPE’s Silicon-Tungsten Tracker.
A DAMPE study finds a consistent spectral softening in primary cosmic ray nuclei—from protons to iron—occurring around a rigidity of ~15 TV, implying that acceleration and propagation depend on rigidity rather than energy per nucleon; the result, published in Nature, challenges alternative models with 99.999% confidence and narrows the questions about where cosmic rays originate, aided by UNIGE researchers’ AI-based event reconstruction and the DAMPE Silicon-Tungsten Tracker for precise measurements.
Astronomers have studied the most powerful gamma-ray burst ever detected, called BOAT, which originated from a supernova in a star 2.4 million light-years away, providing new insights into the structure of jets in such explosions and demonstrating the capabilities of advanced telescopes like LST-1.
Scientists have discovered a naturally occurring particle accelerator near a small black hole called SS 433, shedding light on the mystery of how high-energy cosmic rays reach Earth at nearly the speed of light. This finding provides unprecedented detail into the acceleration of cosmic rays and suggests that particles are accelerated to near the speed of light by encountering an invisible wall, causing energy to build up and propel them into space. The discovery, published in the journal Science, marks a significant step towards understanding the origins of these mysterious cosmic rays.