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X-Rays from e± Pair Halos
DOI:10.3847/1538-4357/ab288f.png)
摘要
En 中文
It was previously suggested that e(+/-) pair halos could be observed in gamma-rays. Searching for pair halos is a challenging topic in gamma-ray astronomy that has not yet yielded a convincing detection for an individual object. Here we propose that X-ray observations could reveal the existence of e +/- pair halos. To support our suggestion, we computed the observed energy and spatial distribution of X-ray photons from the pair halos and check the feasibility of pair halo detection by current and future X-ray observatories. The results show that current X-ray missions could register a positive signal for the pair halos created under some conditions. For a magnetic field (B) of similar to 1 mu G, the X-ray could be observable for a seed gamma-ray energy of E-gamma 0 greater than or similar to 50 TeV. If E-gamma 0 similar to 100 Tev, the observable range of B would be B greater than or similar to 300 nG.
Keyword:
galaxies: active
galaxies: halos
gamma rays: galaxies
X-rays: galaxies
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期刊
IF:
5.4
论文数:
8.3W
被引数:
33.4W

