The new global high-resolution H alpha network: Preliminary results on the chromospheric differential rotation | |
Steinegger, M; Denker, C; Goode, PR; Marquette, WH; Varsik, J; Wang, H; Otruba, W; Freislich, H; Hanslmeier, A; Luo GQ(罗国权) | |
2001 | |
会议名称 | SOHO 10/GONG 2000 Workshop on Helio- and Asteroseismology at the Dawn of the Millennium |
会议日期 | 2000-10-02 |
会议地点 | INST ASTROFIS CANARIAS, SANTA CRUZ TENERI, SPAIN |
卷号 | 464 |
页码 | 315-320 |
通讯作者 | Steinegger, M (reprint author),Big Bear Solar Observ, NJIT, 40386 N Shore Lane, Big Bear City, CA 92314 USA |
英文摘要 | A new global network for high-resolution H-alpha full-disk observations of the sun has been established at the Big Bear Solar Observatory (U.S.A.), the Kanzelhohe Solar Observatory (Austria), and the Yunnan Astronomical Observatory (China). Each of the three stations have a 2K x 2K pixel CCD detector available to monitor the sun with a spatial resolution of 1 arcsec per pixel and a cadence of at least 1 image per minute. Having high-cadence data from three observing stations available enables us to accurately track solar rotation rates and meridional motions by local correlation (LCT) and feature tracking techniques. This includes, e.g., tracking over several days the motions around active regions. After an overview of the new H-alpha: network and its scientific objectives, we present and discuss the first preliminary results of the determination of the chromospheric differential rotation by LCT from a high-cadencence time-series of H-alpha full-disk images. The obtained equatorial rotation rate of 13.3044 deg/day (2.6876 mu rad/s) agrees well with the values obtained by other authors. Finally, we briefly outline our future plans for the continuation of this work. |
收录类别 | CPCI |
产权排序 | 第四完成单位 |
会议网址 | http://adsabs.harvard.edu/abs/2001ESASP.464..315S |
会议录 | ESA SPECIAL PUBLICATIONS - PROCEEDINGS OF THE SOHO 10/GONG 2000 WORKSHOP ON HELIO- AND ASTEROSEISMOLOGY AT THE DAWN OF THE MILLENNIUM
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会议录出版者 | ESA PUBLICATIONS DIVISION C/O ESTEC |
会议录出版地 | PO BOX 299, 2200 AG NOORDWIJK, NETHERLANDS |
学科主题 | Astronomy & Astrophysics; Physics |
语种 | 英语 |
ISSN号 | 0379-6566 |
ISBN号 | 92-9092-697-X |
内容类型 | 会议论文 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/4317] ![]() |
专题 | 云南天文台_其他 |
推荐引用方式 GB/T 7714 | Steinegger, M,Denker, C,Goode, PR,et al. The new global high-resolution H alpha network: Preliminary results on the chromospheric differential rotation[C]. 见:SOHO 10/GONG 2000 Workshop on Helio- and Asteroseismology at the Dawn of the Millennium. INST ASTROFIS CANARIAS, SANTA CRUZ TENERI, SPAIN. 2000-10-02.http://adsabs.harvard.edu/abs/2001ESASP.464..315S. |
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