Tag

Theoretical Models

All articles tagged with #theoretical models

astronomy2 years ago•5 min saved

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

science2 years ago•2 min saved

Exploring the Early Universe with Gravitational Waves

Researchers have discovered a new mechanism of gravitational waves generated by oscillons, which can originate in many cosmological theories from the fragmentation into solitonic "lumps" of the inflaton field that drove the early universe's rapid expansion. The study simulated the evolution of the inflaton field during the early universe and found that oscillons were indeed present. The discovery of these gravitational waves would establish a new window into the universe's earliest moments, and could help shed light on some of the pressing fundamental questions in cosmology.

via Phys.org|

#cosmology #early-universe #gravitational-waves

science2 years ago•5 min saved

Basement Experiment: Catching Dark Matter

Scientists at Oak Ridge National Laboratory attempted to observe dark matter in a brightly-lit hallway in the basement using the sensitivity of their neutrino detectors. Following up on years of theoretical calculation, the COHERENT team set out to observe dark matter, which is believed to make up to 85% of the mass of the Universe. The experiment allowed the team to extend the worldwide search for dark matter in a new way, and they are planning to receive a much larger and more sensitive detector to improve their chances of catching dark matter particles.

via SciTechDaily|

#dark-matter #neutrino-detectors #particle-accelerators