In the framework of the circular restricted three-body problem,the center manifolds associated with collinear libration points contain all the bounded orbits mo
A first generation sodium Laser Guide Star Adaptive Optics System(LGS-AOS) was developed and integrated into the Lijiang 1.8 m telescope in 2013. The LGS-AOS ha
The Five-hundred-meter Aperture Spherical radio Telescope(FAST) adopts an active deformable main reflector which is composed of 4450 triangular panels. During a
An investigation on the possible dynamical models of the core galaxy NGC 1399is performed.Because early-type galaxies are likely to be formed through merging ev
Abstract We consider the BSBM (Bekenstein, Sandvik, Barrow and Magueijo) cos- mological model in the presence of tachyon potential with the aim of studying the st