In the 12CO (J=1-0) survey of 1331 cold IRAS sources, 214 sources show profiles with multiple peaks and are selected as cloud-cloud collision candidates. In Jan
Using the Hilbert-Huang Transform method, we investigate the periodic- ity in the monthly occurrence numbers and monthly mean energy of coronal mass ejections (
We describe the footprint and input catalog for bright nights in the LAMOST Pilot Survey, which began in October 2011. Targets are selected from two stripes in