National Natural Science Foundation of China (Grant Nos. 10873032,10921303,11073010 and 40636031);National Basic Research Program of China (973 pro-grams,2011CB811406 and 2012CB957801)
The daily sunspot numbers of the whole disk as well as the northern and southern hemispheres from 1945 January 1 to 2010 December 31 are used to investi- gate the temporal variation of rotational cycle length through ...
Supported by the National Natural Science Foundation of China(Grant Nos. 10973038 and 40636031);supported by the National Basic Research Program of China (973 Program; Grant No. 2011CB811403);the Scientific Application Foundation of Yunnan Province (Grant Nos. 2007A112M and 2007A115M)
We present simultaneous observations of three recurring jets in EUV and soft X-ray (SXR), which occurred in an active region on 2007 June 5. By comparing their morphological and kinematic characteristics in these tw...
supported by the National Natural Science Foundation of China (Grant Nos.10873032,10921303 and 40636031);the National Key Research Science Foundation (2006CB806303)
Sunspot groups observed by the Royal Greenwich Observatory/US Air Force/NOAA from 1874 May to 2008 November and the Carte Synoptique solar filaments from 1919 March to 1989 December are used to investigate the relativ...
Supported by the National Natural Science Foundation of China (Grant Nos. 40636031, 10778723, 10873038, and 10833007);the Important Directional Projects of Chinese Academy of Sciences (Grant No. KLCX2-YW-T04);the National Basic Research Program of China (GrantNo. 2006CB806301)
We have compared a set of co-temporal magnetograms obtained with the Solar Magnetic Field Tele-scope (SMFT) of the Huairou Solar Observing Station (HSOS) and with the Spectro-Polarimeter of the Solar Optical Telescope...
supported by the National Natural Science Foundation of China(Grant Nos.10573034 and 40636031);the National Key Research Science Foundation(2006CB806303)
We investigate the cyclic evolutionary behavior of CME accelerations for accelerating and decelerating CME events in cycle 23 from 1997 January to 2007 December. It is found that the absolute values of semiannual mean...
Supported by the National Natural Science Foundation of China(Grant Nos.10583032 and 40636031);the National Key Research Science Foundation(2006CB806303)
Some historical records, which have held since the beginning of modern solar activity cycles, are being broken by the present Sun: cycle 23 records the longest cycle length and fall time; latitudes of high-latitude s...