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arXiv 0907.1017astro-ph.HEastro-ph.GA
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用MAGIC望远镜观测微类星体

Microquasar observations with the MAGIC telescope

T. Y. Saito, R. Zanin, P. Bordas, V. Bosch-Ramon, T. Jogler, J. M. Paredes, M. Ribo, M. Rissi, J. Rico, D. F. Torres

摘要:

微类星体是一种X射线双星,显示出由吸积作用驱动的相对论性喷流到致密物体上,是银河系中最有效的加速器。理论模型预测在射流底部的甚高能量(VHE)发射,其中粒子被加速到多TeV能量。这种发射可以通过现有的IACT检测到。%此外,伽马射线通量应增加耀斑事件时,吸积率提高。MAGIC望远镜从2005年到2008年总共观测了微类星体GRS 1915+105,Cyg X-3,Cyg X-1和SS 433约150小时。我们通过使用RATAN望远镜的无线电耀斑警报使用多波长信息以及通过RXTE/ASM和Swift/BAT监测数据确保源的低/硬状态来触发我们的观测。我们报告的上限稳定和可变的排放量从这些来源在这段长时间。

英文摘要:

Microquasars, X-ray binaries displaying relativistic jets driven by accretion onto a compact object, are some of the most efficient accelerators in the Galaxy. Theoretical models predict Very High Energy (VHE) emission at the base of the jet where particles are accelerated to multi-TeV energies. This emission could be detected by present IACTs. %Moreover, gamma-ray fluxes should increase during flaring events when accretion rates are enhanced. The MAGIC telescope observed the microquasars GRS 1915+105, Cyg X-3, Cyg X-1 and SS433 for ~ 150 hours in total from 2005 to 2008. We triggered our observations by using multi wavelength information through radio flaring alerts with the RATAN telescope as well as by ensuring the low/hard state of the source through RXTE/ASM and Swift/BAT monitoring data. We report on the upper limits on steady and variable emission from these sources over this long period.

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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