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arXiv 0801.2903astro-ph
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微类星体SS433暗喷流中γ射线和中微子的产生

Production of gamma rays and neutrinos in the dark jets of the microquasar SS433

Matias M. Reynoso, Gustavo E. Romero, Hugo R. Christiansen

摘要:

本文研究了进动微类星体SS433暗喷流中pp相互作用产生的γ射线和中微子的光谱能量分布。由于与扩展盘和恒星的物质相互作用而产生的伽马射线吸收被认为是重要的,以及赤道辐射的紫外线和中红外线辐射引起的吸收。我们分析的范围内的岁差阶段,这种衰减是在最低限度和检测的伽玛射线信号的机会得到增强。相对论质子在喷流中的功率是模型的自由参数,受HEGRA数据的约束。这就限制了GLAST、VERITAS和MAGIC II等仪器探测的伽马射线通量。未来用立方千米望远镜(如IceCube)探测高能中微子也将产生有关可能发生在黑暗喷流中的加速机制的重要信息。总的来说,确定伽马射线与中微子通量的比率将成为澄清重喷流物理学的一个关键观测工具。

英文摘要:

We study the spectral energy distribution of gamma rays and neutrinos in the precessing microquasar SS433 as a result of pp interactions within its dark jets. Gamma-ray absorption due to interactions with matter of the extended disk and of the star is found to be important, as well as absorption caused by the UV and mid-IR radiation from the equatorial envelopment. We analyze the range of precessional phases for which this attenuation is at a minimum and the chances for detection of a gamma-ray signal are enhanced. The power of relativistic protons in the jets, a free parameter of the model, is constrained by HEGRA data. This imposes limits on the gamma-ray fluxes to be detected with instruments such as GLAST, VERITAS and MAGIC II. A future detection of high energy neutrinos with cubic kilometer telescopes such as IceCube would also yield important information about acceleration mechanisms that may take place in the dark jets. Overall, the determination of the ratio of gamma-ray to neutrino flux will result in a key observational tool to clarify the physics of heavy jets.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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