This paper reports results from the multicolor photometric observations of 15pre-main sequence stars collected in the period September 2010-October 2017.The sta
We present our optical multi-color monitoring of the BL Lac object OJ 287 from January 2006to December 2012 in the V, R and I bands. A relatively active state i
Photometric observations in Sloan g' and i' bands of four W UMa stars,NSVS 2244206,NSVS908513,CSS J004004.7+385531 and VSX J062624.4+570907,are presente
The search for fast radio bursts (FRBs) is a hot topic in current radio astronomy studies. In thiswork, we carry out a single pulse search with a very long baseli