首页> 外文期刊>The Astrophysical journal >DELAYED MeV-GeV GAMMA-RAY PHOTONS IN GAMMA-RAY BURSTS: AN EFFECT OF ELECTROMAGNETIC CASCADES OF VERY HIGH ENERGY GAMMA RAYS IN THE INFRARED/MICROWAVE BACKGROUND
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DELAYED MeV-GeV GAMMA-RAY PHOTONS IN GAMMA-RAY BURSTS: AN EFFECT OF ELECTROMAGNETIC CASCADES OF VERY HIGH ENERGY GAMMA RAYS IN THE INFRARED/MICROWAVE BACKGROUND

机译:伽玛射线爆发中MeV-GeV伽玛射线光子的延迟:红外/微波背景下非常高能伽玛射线的电磁级联效应

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摘要

We show that the electromagnetic cascade of very high energy gamma-rays from gamma-ray bursts in the IR/microwave background will produce delayed MeV-GeV photons. Monte Carlo simulations have been performed to study this process. The distance of GB 940217 is estimated to be not less than 120 Mpc using our model, which supports a cosmological origin for this source. We also show that the time delays of gamma-ray photons are inversely proportional to their energy. Our model does not require the presence of intergalactic magnetic fields.
机译:我们表明,红外/微波背景中来自伽马射线爆发的非常高能量的伽马射线的电磁级联将产生延迟的MeV-GeV光子。已经进行了蒙特卡洛模拟来研究该过程。使用我们的模型,GB 940217的距离估计不小于120 Mpc,它支持该来源的宇宙学起源。我们还表明,伽马射线光子的时间延迟与其能量成反比。我们的模型不需要星际磁场的存在。

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