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arXiv 1204.0943astro-ph.SRastro-ph.IM
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Rosse日地观测站对低频太阳射电爆发的观测

Observations of Low Frequency Solar Radio Bursts from the Rosse Solar-Terrestrial Observatory

P. Zucca, E. P. Carley, J. McCauley, P. T. Gallagher, C. Monstein, R. T. J. McAteer

摘要:

罗斯日地观测站(Rosse Solar-Terrestrial Observatory,RSTO; www.rosseobservatory.ie)于2010年在爱尔兰奥法利郡比尔城堡(Birr Castle,Co. Offaly,53 05'38.9”,7 55'12.7”)建立,以研究太阳射电爆发以及地球电离层和地磁场的响应。迄今为止,已经安装了三台用于光谱学和移动式观测台的低成本低频复合天文仪器光谱仪,能够在10-870兆赫频率范围内进行观测。接收机同时由双锥和对数周期天线馈电。名义上,在10-400 MHz范围内的频谱是在600个信道上每秒4次扫描获得的。在这里,我们描述了RSTO太阳射电频谱仪设置,并提出了动态光谱的样本的II,III和IV型射电爆发。特别是,我们描述了在II型爆发中观察到的精细尺度结构,包括带分裂和快速变化的人字形特征。

英文摘要:

The Rosse Solar-Terrestrial Observatory (RSTO; www.rosseobservatory.ie) was established at Birr Castle, Co. Offaly, Ireland (53 05'38.9", 7 55'12.7") in 2010 to study solar radio bursts and the response of the Earth's ionosphere and geomagnetic field. To date, three Compound Astronomical Low-cost Low-frequency Instrument for Spectroscopy and Transportable Observatory (CALLISTO) spectrometers have been installed, with the capability of observing in the frequency range 10-870 MHz. The receivers are fed simultaneously by biconical and log-periodic antennas. Nominally, frequency spectra in the range 10-400 MHz are obtained with 4 sweeps per second over 600 channels. Here, we describe the RSTO solar radio spectrometer set-up, and present dynamic spectra of a sample of Type II, III and IV radio bursts. In particular, we describe fine-scale structure observed in Type II bursts, including band splitting and rapidly varying herringbone features.

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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