“Gamma ray” Science-Research, January 2022, Week 1 — summary from OSTI GOV, NASA Technology Transfer Program, Astrophysics Data System and DOAJ

OSTI GOV — summary generated by Brevi Assistant

GRB 131108A is a bright lengthy gamma-ray burst detected by the Large Area Telescope and the Gamma-ray Burst Monitor on board the Fermi Gamma-ray Space Telescope. The temporal and spooky indices during the early steep degeneration stage and the decaying phase of each flare reveal the consistency with a relationship of the curvature impact, which is the first observational proof of the high-latitude emission in the GeV energy band. The synchrotron external shock model forecasts the evolution of the spectral and temporal indices throughout the gamma-ray burst afterglow for various ecological density accounts, electron spooky indices, electron air conditioning regimes, and regions of the range. Furthermore, the Kolmogorov- Smirnov examination of the two p circulations from the slow-moving and rapid coolings declines the hypothesis that the 2 distributions are drawn from the solitary reference circulation with a significance of 3. 2 σ. After the identification of the gamma-ray blazar TXS 0506 +056 as the first compelling IceCube neutrino resource prospect, we performed an organized analysis of all high-energy neutrino occasions satisfying the IceCube realtime trigger criteria. Locating one or two neutrinos originating from gamma-ray blazars in the offered sample of high-energy neutrinos follows previously acquired limits of neutrino emission from gamma-ray blazars, indicating the sources of most planetary high-energy neutrinos remain unknown. We report that despite a number of thousand Fermi-Large Area Telescope blazar detections, the γ-ray emission mechanism is badly recognized. The slope distribution suggests a bimodal population with high and intermediate synchrotron peak objects showing larger m than low synchrotron top things. Statistical proof has previously implied that the stellar center GeV excess originates largely from factor resources, and not from obliterating dark matter. In a proof-of-principle example with substitute information, we discover that unmodeled resources in the Fermi bubbles can result in a dark matter signal being misattributed to aim resources by the NPTF. We report that one of the forecasts of the ΛCDM cosmological structure is the hierarchical formation of structure, triggering dark matter halos and subhalos. If DM particles are Weakly Interacting Massive Particles, we expect them to wipe out in subhalos, generating gamma rays which can be discovered with the Fermi satellite.

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NASA Technology Transfer Program — summary generated by Brevi Assistant

NASA Goddard Space Flight Center has created a new microfabrication procedure designed to produce looming thin film x-ray absorbers optimized for soft x-ray spectroscopy. Mini satellites, occasionally called CubeSats, are mainly made use of for space research. The Miniaturized Astrometric Alignment Sensor developments alignment stellar sensing unit hardware. Trendsetters at the NASA Langley Research Center have established the Multi-Layer Nuclear Thermionic Avalanche Cell, unique electric generator which transforms nuclear gamma-ray photon energy directly to electrical power by liberating intra-band atomic internal covering electrons. Liberated electrons go across the vacuum gap and reach the collection agency to successfully convert energy stemmed from contaminated materials right into functional electrical energy. NASA’s Marshall Space Flight Center has established unique neutron grazing incidence optics for use with small mobile neutron generators. Ray mapping simulations of the system show nearly an order of size neutron flux boost on a 1-mm diameter object. Image high quality indicators and recognized flaw requirements for industrial 2D x-ray radiography have been utilized in technique for many years. The Pyramid Image Quality Indicator was developed especially for CT information and which can be modified to suit a large range of applications. Optical applications need clear windows for a number of applications, including protection of tool optics from dust and contamination and waveform band being rejected. The Ultra-Thin Large Area Polymer Film Fabrication Process is a new construction treatment that makes it possible for high uniformity structured big location slim films at an inexpensive.

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Astrophysics Data System — summary generated by Brevi Assistant

The Large Area Telescope, among the 2 tools on the Fermi Gamma-ray Space Telescope, has observed improved gamma-ray emission from a resource positionally consistent with the flat spectrum radio quasar PKS 0403–13, with radio counterpart setting R. A.: 61. 391680 deg, Dec.: -13. 137136 deg dependably determining the additional spectra of HR for energy below 5 \, GeV, ii the contributions to the measured isotropic flux from the Galactic PBH HR and that from destruction radiation as a result of vaporized positrons, iii incorporation of astrophysical history from gamma-ray resources. A major unpredictability in understanding the transport and feedback of cosmic-rays CRs within and past our Galaxy exists in the unknown CR spreading rates, which are largely figured out by wave-particle interaction at microscopic gyro-resonant scales. Below, we suggest a unique streaming box structure to research the CRSI with an imposed CR pressure gradient, allowing first-principle measurement of the CR scattering rates as a function of ecological parameters.

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DOAJ — summary generated by Brevi Assistant

In this paper, the activator core, irradiating light beam tubes, and radiological shields of a 5 MW open pool type Material Testing Reactor are substituted carefully by using the MCNPX 2. 6 code and its default collection. Independently, dosimetry parameters are measured by using the Berthold LB 6411 neutron dose rate monitor and Berthold LB 123 Gamma dose rate monitor. Multicomponent glasses doped with erbium oxide 70P2O5- 14ZnO-CdO-xEr2O3 named as [Er1 → Er6] Have been prepared making use of the thaw appeasing technique. The optical absorption spectra suggest that erbium ions lived in an Er3+ environment. Band rationing, major part evaluation and decorrelation stretch techniques of Landsat-8 with Sentinel-2 information effectively used in the discrimination of the lithological systems and the surface area framework attributes of Wadi Al-Miyah location in the Central Eastern Desert of Egypt. The analysis of the Radioelements Composite Image successfully defined the enrichment areas with radioelement concentrations within the alkali feldspar granite, biotite-muscovite schist, granodiorite and the hydrothermal modification areas within the diorite of Gabal Al- Bakriyah. In this research, we extensively evaluated the structural, physical and gamma-ray attenuation properties of α-TeO2 CMS, which has suddenly been observed as a component of the Sm2O3 doped TeO2- B2O3- V2O5 glasses synthesis process. It can be concluded that additional contrast studies can be done between normal glass structure and α-TeO2 CMS happened glass frameworks in terms of far better understanding of the complete gamma-ray attenuation and the impact of α-TeO2 CMS.

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  • https://doi.org/10.1016/j.jandt.2021.06.001 — Determination of the neutron and gamma ray dose rates of the irradiating beam tubes of a pool-type research reactor by using Monte Carlo simulation and experimental detectors regarding radiation protection issues.
  • https://doi.org/10.1016/j.jmrt.2021.10.134 — Fabrication, linear nonlinear optical properties, Judd–Ofelt parameters and gamma-ray attenuation capacity of Er2O3 doped P2O5–ZnO–CdO glasses.
  • https://doi.org/10.1016/j.ejrs.2021.12.004 — Radioactive mineralization detection using remote sensing and airborne gamma-ray spectrometry at Wadi Al-Miyah area, Central Eastern Desert, Egypt.
  • https://doi.org/10.1016/j.jmrt.2021.12.059 — Structural characterization and gamma-ray attenuation properties of rice-like α-TeO2 crystalline microstructures (CMS) grown rapidly on free surface of tellurite-based glasses.

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