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#amaterasu

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Daniel Pomarède

in the #arXiv

Beyond the Local Void: A comprehensive view on the origins of the Amaterasu particle

by Nadine Bourriche and Francesca Capel
arxiv.org/abs/2406.16483

arXiv.orgBeyond the Local Void: A comprehensive view on the origins of the Amaterasu particleWe use the reconstructed properties of the Amaterasu particle, the second-highest energy cosmic ray ever detected, to map out three-dimensional constraints on the location of its unknown source. We highlight possible astrophysical sources that are compatible with these regions and requirements. Among these, M82, a powerful starburst galaxy, stands out as a strong candidate due to its position and proximity. To derive our constraints, we use CRPropa 3 to model all relevant propagation effects, including deflections in the Galactic and extra-Galactic magnetic fields. We consider key input quantities such as source distance, position, energy, and the strength and coherence length of the extra-Galactic magnetic field as free parameters. We then infer constraints on these parameters by applying approximate Bayesian computation. We present our results, demonstrating the impact of different assumptions for the arrival mass of the Amaterasu particle and the systematic uncertainties on the energy scale.
#amaterasu#cosmic#ray
Benjamin Carr, Ph.D. 👨🏻‍💻🧬

A Ray From #Space Hit #Earth with Such Incredible Power That Scientists Named It After a God
The source of the #Amaterasu particle, named after the Japanese sun goddess, is a "big mystery." It’s the second-highest-energy #cosmicray ever recorded, at 240 exa-electron volts (Eev), second only to the aptly-named "Oh-My-God particle" discovered in 1991, which clocked in at 320Eev. Researchers describe the energy as equivalent to dropping a brick on your toe from waist height. vice.com/en/article/v7bqj3/ama

curious ordinary

In #JapaneseMythology Amaterasu is goddess of the sun. Her name means 'great divinity illuminating heaven' & she brings light to the world. As queen of all the kami, she is seen as an embodiment of both the sun and Japan itself. In one myth she hid in a cave after fighting with her brother Susanoo which plunged the world into darkness. Fortunately she was lured out by some clever thinking & the dancing of Uzume & light returned to the world.
#folklore
🎨'Sun Goddess #Amaterasu' - Yashima Gakutei

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