منابع مشابه
Cosmological X-ray Flashes in the Off-Axis Jet Model
The 〈V/Vmax〉 of the cosmological X-ray flashes detected by Wide Field Cameras on BeppoSAX is calculted theoretically in a simple jet model. The total emission energy from the jet is assumed to be constant. We find that if the jet opening half-angle is smaller than 0.03 radian, the theoretical 〈V/Vmax〉 is less than ∼ 0.4, which is consistent with the recently reported observational value of 0.27...
متن کاملX-ray Flashes from Off-axis Gamma-Ray Bursts
Ioka and Nakamura (2001) proposed a simple jet model which is compatible with the peak luminosity-spectral lag relation, the peak luminosity-variability relation and various other relations in the Gamma-Ray Bursts. If the viewing angle is much larger than the collimation angle of the jet in the model by Ioka and Nakamura, for appropriate model parameters we obtain the observational characterist...
متن کاملOff-axis reflection zone plate for quantitative soft x-ray source characterization
A compact system for high-resolution spectroscopy and quantitative photon flux and brilliance measurements of pulsed soft x-ray sources is described. The calibrated system combines a novel elliptical off-axis reflection zone plate with charge-coupled device detection for simultaneous spectral and spatial measurements. Experiments on a water-window droplet-target laser-plasma source demonstrate ...
متن کاملCosmological X-Ray Flashes from Off-Axis Jets
The 〈V/Vmax〉 of the cosmological X-ray flashes detected by WFC/BeppoSAX is calculated theoretically in a simple jet model. The total emission energy from the jet is assumed to be constant. We find that if the jet opening half-angle is smaller than 0.03 radian, off-axis emission from sources at z≤4 can be seen. The theoretical 〈V/Vmax〉 is less than 0.4, which is consistent with the observational...
متن کاملX-ray flashes from off-axis nonuniform jets
It is widely believed that outflows of gamma-ray bursts are jetted. Some people also suggest that the jets may have structures like ǫ(θ) ∝ θ. We test the possibility of X-ray flashes coming from such jets in this paper. Both qualitative and quantitative analyses have shown that this model can reproduce most observational features for both X-ray flashes and gamma-ray bursts. Using common paramet...
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ژورنال
عنوان ژورنال: Journal of Instrumentation
سال: 2017
ISSN: 1748-0221
DOI: 10.1088/1748-0221/12/10/p10013