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Ultra high energy cosmic rays in the north: Measurement of UHE cosmic rays with the high resolution fly's eye (HiRes) detector | |
Matthews, J. N. | |
通讯作者 | Matthews, J. N. |
会议名称 | 9th Conference on Intersections of Particle and Nuclear Physics |
会议日期 | MAY 30-JUN 03, 2006 |
会议地点 | Rio Grande, PR |
英文摘要 | The High Resolution Fly's Eye (HiRes) observatory has been collecting Ultra High Energy Cosmic Ray (UHECR) data since 1997. The experiment observes cosmic ray air showers via the air fluorescence technique and consists of two observatory sites separated by 12.6 km in the western Utah desert. The two stations can each measure the cosmic rays in monocular mode. In addition, the data from the two stations can also be combined to form a stereo measurement of the air showers. The experiment measures such properties as the energy spectrum, chemical composition, and p-air cross-section of these cosmic rays. It also searches for point sources and other anisotropy. The spectrum is measured above similar to 3 x 10(17) eV and shows significant structure including the "ankle" and a steep fall off which is consistent with the expectation of the GZK threshold. [1, 2] The spectrum is inconsistent with a continuing spectrum at the 5 sigma level. The composition is measured using the X-max technique. It was found to be predominantly light and unchanging over the range from 10(18) to 3 x 10(19) eV. Finally, several different styles of searches for anisotropy in the data were performed. There are some tantalizing hints including potential correlation with BL Lac objects and the 'AGASA triplet", however these will need to be confirmed with an independent data set. |
英文关键词 | fluorescence spectrum composition Ultra High Energy Cosmic Ray UHECR GZK |
来源出版物 | Intersections of Particle and Nuclear Physics |
ISSN | 0094-243X |
出版年 | 2006 |
卷号 | 870 |
页码 | 190-197 |
ISBN | 978-0-7354-0368-0 |
出版者 | AMER INST PHYSICS |
类型 | Proceedings Paper |
语种 | 英语 |
国家 | USA |
收录类别 | CPCI-S |
WOS记录号 | WOS:000243874100025 |
WOS关键词 | SPECTRUM ; SEARCH |
WOS类目 | Physics, Nuclear ; Physics, Particles & Fields |
WOS研究方向 | Physics |
资源类型 | 会议论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/295994 |
作者单位 | (1)Univ Utah, Dept Phys, Salt Lake City, UT 84112 USA |
推荐引用方式 GB/T 7714 | Matthews, J. N.. Ultra high energy cosmic rays in the north: Measurement of UHE cosmic rays with the high resolution fly's eye (HiRes) detector[C]:AMER INST PHYSICS,2006:190-197. |
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