Multifrequency Monitoring of the Blazar PKS 2005-489
Multifrequency Monitoring of the Blazar PKS 2005-489
复制标题
Blazer PKS 的多频监控 2005-489
DOI：
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
Andrew Goodman
中科院分区：
文献类型：
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作者：
Andrew Goodman
摘要 我们提出了对 PKS 2005-489（一种明亮且高度可变的耀变体）的多频率监测活动。在 13 天的时间内完成了 RXTE 的 X 射线、CTIO 0.9 m 望远镜的光学、CANGAROO-II 的 TeV 能量以及 SEST 的亚毫米波长的同步观测。 PKS 2005-489 和其他耀变体之前的多波长监测活动发现了复杂的通量和光谱变异行为，具有不同的模式和时间尺度，从几天到几小时或更短。观察到 PKS 2005-489 从静止状态过渡到耀斑的早期阶段。 2000 年 8 月 19 日至 27 日期间，观察到光学和 X 射线波长处的通量密度逐渐增加，并且从 2000 年 9 月 2 日开始观察到 X 射线发射急剧增加。在活动期间未检测到日内和光谱变化。
Abstract We present a multifrequency monitoring campaign of PKS 2005–489, a bright and highly variable blazar. Simultaneous observations were completed over a 13 day period in the X-ray with RXTE, in the optical at the CTIO 0.9 m telescope, at TeV energies with CANGAROO-II, and at submillimetre wavelengths with SEST. Previous multiwavelength monitoring campaigns of PKS 2005–489 and other blazars have found complex flux and spectral variability behaviour, with different modes and timescales from days to hours and shorter. PKS 2005–489 was observed in transition from a quiescent state into the early stages of a flare. A gradual increase in flux density was observed at optical and X-ray wavelengths during 19–27 August 2000, and a dramatic increase in X-ray emission was observed starting on 2 September 2000. Intraday and spectral variability were not detected during the campaign.