#HighEnergyElectrons #CosmicRay
"Measuring the Spectrum of High-Energy Cosmic-Ray Electrons"
Physics as a community has often acted like one large recycling program. I was looking for sources for a paper I am co-authoring when I found a report from 1969 about a mobile #CosmicRay station. I read it and spotted the B&W photo below, showing the specialized curved lead bricks.
Those same bricks are now used in the #HALO experiment @SNOLAB, which recycled the lead from a cosmic ray station in Deep River, ON, Canada … the same site that made this mobile cosmic ray station!
🧭 Cosmic-ray neutron rover assists in estimating mesoscale soil moisture on eastern Qinghai-Tibetan plateau
https://phys.org/news/2024-10-cosmic-ray-neutron-rover-mesoscale.html
Soil water resources are crucial for hydrological processes and ecosystem functions on the Qinghai-Tibetan Plateau. However, accurately measuring soil moisture distribution in this region is challenging due to diverse ecosystems, complex terrain, and harsh environmental conditions.
in the #arXiv
Beyond the Local Void: A comprehensive view on the origins of the Amaterasu particle
by Nadine Bourriche and Francesca Capel
https://arxiv.org/abs/2406.16483
#amaterasu #cosmic #ray #cosmicray #particle #physics #astrophysics #astronomy #astrodon #universe #cosmology #localvoid #space #science #research #telescope #array #telescopearray #utah #japan #japanese #goddess #sun #mythology
We 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.
#fallout #fallouttv #retro #nostalgic
I have a #serial #terminal like the ones used in the #fallout #television #show. One of the plastic #monitor tube mounting posts is broken and it did not turn on but might just be a fuse. Been sitting in the attic for a long time. I salvaged it from the university of #minnesota #CosmicRay lab when they shut it down 35 years ago. It was used to #bootstrap a #PDP-11 #computer by typing in several lines of assembly to bring up the main #OperatingSystem. I'll see if I can get it working again or may be repurpose/retrofit it as a modern computer monitor. They offered me the PDP-11 at the time also but it was too big for me to retain.
Robert Hart
Louis Marmet has moved
Stephen Sekula
Paul Houle
Daniel Pomarède
James
Dave J
Benjamin Carr, Ph.D. 👨🏻💻🧬
