منابع مشابه
Beta and gamma dose rates from terrestrially distributed sources.
Dose rates in air and at various depths in tissue produced by concentrations of natural isotopes in the ground are calcu lated for both beta and gamma radiation. Calculated gonadal "screening factors" are within k$ of the experimental values reported by the British Medical Research Council*
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We recalculate the diffuse flux of high-energy neutrinos produced by gamma-ray bursts in the relativistic fireball model. Although we confirm that the average single burst produces only approximately 10-2 high-energy neutrino events in a detector with a 1 km2 effective area, i.e., about 10 events yr-1, we show that the observed rate is dominated by burst-to-burst fluctuations that are very larg...
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In this paper, we identify Cen A and M87, two nearby Fanaroff-Riley I (FRI) radio galaxies, with high-energy-peaked BL Lac-like (HBL-like) objects by investigating their spectral energy distributions (SEDs). The SED peak of Cen A at ∼150 keV, which was generally believed to be the peak of inverseCompton emission as in the case of 3C 273, is found to be actually the peak of synchrotron emission....
متن کاملExtragalactic Gamma-ray Sources
This chapter provides a review of γ-ray sources lying at high Galactic latitudes. Their statistical properties and variability status, as well as studies involving cross correlations with lower frequency catalogs and multiwavelength observations, are summarized. The case for active galactic nuclei is analyzed with special emphasis, since they represent the largest population of high energy sour...
متن کاملGamma-Ray Dose From an Overhead Plume.
Standard plume models can underestimate the gamma-ray dose when most of the radioactive material is above the heads of the receptors. Typically, a model is used to calculate the air concentration at the height of the receptor, and the dose is calculated by multiplying the air concentration by a concentration-to-dose conversion factor. Models indicate that if the plume is emitted from a stack du...
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ژورنال
عنوان ژورنال: Industrial & Engineering Chemistry
سال: 1957
ISSN: 0019-7866,1541-5724
DOI: 10.1021/ie50571a045