Results 51 to 60 of about 5,582,399 (288)
Is Gamma-Ray Burst 221009A Really a Once-in-10,000 yr Event?
The Astrophysical JournalGamma-ray bursts (GRBs) brighter than the GRB 221009A, the brightest yet observed, have previously been estimated to occur at a rate of one per 10,000 yr, based on the extrapolation of the distribution of fluences of the long-GRB population. We show that
Justin D. Finke, Soebur Razzaque
doaj +1 more source
Advanced Engineering Materials, EarlyView.Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar +2 more
wiley +1 more source
Exploring the Nature of Galactic Unassociated Sources Detected by the Fermi-LAT
The Astrophysical JournalWe investigate the nature of the unassociated sources detected by the Fermi-LAT close (∣ b ∣
F. Acero +121 more
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Unidentifed gamma-ray sources: hunting gamma-ray blazars
, 2012 24 pages, 4 figures, Accepted for publication on the Astrophysical ...
Massaro, F. +4 more
openaire +3 more sources
Advanced Engineering Materials, EarlyView.Experiments and thermophysical simulations were conducted to investigate the electron beam powder bed fusion electron beam (PBF‐EB/M) process for the γ′‐strengthened nickel‐based superalloy Inconel 738LC. The results demonstrate the impact of process‐induced microstructural variations on high‐temperature mechanical behavior, providing a basis for ...
Jan Niklas Petenati +11 more
wiley +1 more source
Very high energy cosmic gamma rays from radio and x-ray pulsars [PDF]
, 1987 This thesis is concerned with the detection of very high energy cosmic gamma-rays from isolated pulsars and X-ray binary sources using the atmospheric Cerenkov technique. A general introduction to gamma ray detection techniques is followed by adscription
Chadwick, P.M, Chadwick, Mary Paula
core
Review of Past Nuclear Accidents: Source Terms and Recorded Gamma-Ray Spectra [PDF]
, 1997 Airborne gamma ray spectrometry using high volume scintillation detectors, optionally in conjunction with Ge detectors, has potential for making rapid environmental measurements in response to nuclear accidents.
Sanderson, D.C.W. +4 more
core +5 more sources
Near-infrared and gamma-ray monitoring of TANAMI gamma-ray bright sources [PDF]
Astronomy & Astrophysics, 2013 Spectral energy distribution and its variability are basic tools for understanding the physical processes operating in active galactic nuclei (AGN). In this paper we report the results of a one-year near infra red (NIR) and optical monitoring of a sample of 22 AGN known to be gamma-ray emitters, aimed at discovering correlations between optical and ...
R. Nesci +4 more
openaire +3 more sources
Advanced Engineering Materials, EarlyView.Schematic representation of modes of microcrack nucleation, growth and temporary arrestment at different boundaries, with the criteria for crack propagation in three scenarios: (1) large notch, (2) defect/small sharp notch, and (3) long crack. This work revisits and integrates results on the fatigue behavior of advanced bainitic steels (in particular ...
Lucia Morales‐Rivas
wiley +1 more source
Evidence that gamma-ray burst sources repeat [PDF]
Monthly Notices of the Royal Astronomical Society, 1993 We investigate clustering in the angular distribution of the 260 $γ$-ray bursts in the publicly available BATSE catalogue, using a nearest neighbour analysis and the measures of burst brightness $B$ and short time scale variability $V$ which we introduced earlier. We find that while all 260 bursts are only modestly clustered (Q-value = $1.8 \times 10^{-
Quashnock, J. M., Lamb, D. Q.
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