The new global high-resolution H alpha network: Preliminary results on the chromospheric differential rotation

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	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
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.