Results 1 to 10 of about 823 (213)

Electromagnetic Induction and Relativistic Double Layer: Mechanism for Ball Lightning Formation

open access: yesProceedings, 2019
What is the probability that ball lightning (BL) is a real phenomenon of nature? The answer depends on your prior information. If you are one of those lucky men who had a close encounter with a BL and escaped unscathed, your probability that it is real ...
Arthur Baraov
doaj   +1 more source

A Cosmological Fireball with 16% Gamma-Ray Radiative Efficiency

open access: yesThe Astrophysical Journal Letters, 2023
Gamma-ray bursts (GRBs) are the most powerful explosions in the universe. How efficiently the jet converts its energy to radiation is a long-standing problem, which is poorly constrained.
Liang Li   +11 more
doaj   +1 more source

Variable air blast fireball of HMX/Al with tailored gradient structures

open access: yesCase Studies in Thermal Engineering
Air blast fireball of the composite explosive is an important way to destroy the target and effectively determines the damage effect. Herein, based on the effect of aluminum powder content on the explosion reaction kinetics of HMX-based aluminized ...
Yaofeng Mao   +5 more
doaj   +1 more source

Relationship between fireball's shapes and mechanical materials under grinding

open access: yesNihon Kikai Gakkai ronbunshu, 2014
The relationship between the elements included in materials and the fire ball obtained by spark test, that is simple, has been examined by using SEM photographing of the fire ball.
Makoto TANABE   +2 more
doaj   +1 more source

Fireball antinucleosynthesis

open access: yesPhysical Review D
The tentative identification of approximately ten relativistic antihelium (He¯) cosmic-ray events at AMS-02 would, if confirmed, challenge our understanding of the astrophysical synthesis of heavy antinuclei. We propose a novel scenario for the enhanced production of such antinuclei that is triggered by isolated, catastrophic injections of large ...
Michael A. Fedderke   +4 more
openaire   +2 more sources

Fireball tomography from bottomonia elliptic flow in relativistic heavy-ion collisions

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
We calculate the elliptic flow of bottomonia produced in Pb $$\,+\,$$ + Pb collisions at $$\sqrt{s_{\mathrm{NN}}}=5.02$$ s NN = 5.02  TeV. We consider temperature-dependent decay widths for the anisotropic escape of various bottomonium states and observe
Partha Pratim Bhaduri   +4 more
doaj   +1 more source

A Global Fireball Observatory [PDF]

open access: yesPlanetary and Space Science, 2020
The world’s meteorite collections contain a very rich picture of what the early Solar System would have been made of, however the lack of spatial context with respect to their parent population for these samples is an issue. The asteroid population is equally as rich in surface mineralogies, and mapping these two populations (meteorites and asteroids ...
Devillepoix, H.A.R.   +48 more
openaire   +6 more sources

On the Spectrum and Polarization of Magnetar Flare Emission

open access: yesGalaxies, 2018
Bursts and flares are among the distinctive observational manifestations of magnetars, isolated neutron stars endowed with an ultra-strong magnetic field ( B ≈ 10 14 – 10 15 G).
Roberto Taverna, Roberto Turolla
doaj   +1 more source

Experimental study on explosion dispersion process of a multi-layer composite charge under different initiation modes

open access: yesDefence Technology, 2020
The influence of initiation modes on the explosive dispersion process of the multi-layer composite charge (MCC) was studied. Overpressure sensors and high-speed photography system were used to investigate the energy release process of an MCC with a ...
Xiao-wen Hong   +5 more
doaj   +1 more source

GRB 181110A: Constraining the Jet Structure, Circumburst Medium and the Initial Lorentz Factor

open access: yesUniverse, 2022
The afterglow data of gamma ray bursts (GRBs) can be used to constrain the physical properties of the fireball (e.g., the jet structure and opening angle) and the circumburst medium.
Song Han   +6 more
doaj   +1 more source

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