The multiple protostellar system L1551 IRS5 exhibits a large-scale bipolar molecular outflow that spans ∼1.5 pc on both the NE (redshifted) and SW (blueshifted) sides of the system. We have studied this outflow within ∼4000 AU of its driving source(s) with the SubMillimeter Array. Our CO(2–1) image at ∼4 (∼560 AU) resolution reveals three distinct components: 1) an X-shaped structure spanning ∼...

2014 For the uniaxial antiferromagnet FeCl2, we study the elastic and magnetic effects at 0 K due to the magneto-elastic coupling introduced by the crystal field of the Fe2+ ions. In a magnetic field H perpendicular to the easy magnetization axis, which is the 3 axis of the point group (3 m) of Fe2+ ions, strains occur destroying the crystal symmetry and a bulk magnetization appears with compon...

We present maps of CO emission in the protoplanetary nebula Frosty Leo. Observations of the rotational transitions 12CO J = 2−1 and 1–0 have been obtained with the IRAM interferometer and the OVRO array. The molecular envelope of Frosty Leo is found to be complex and compact; most of the gas extends <∼6′′ and shows a structure that is very different to the extended optical nebula. It is compose...

In this manuscript, we have launched a study on the completely nonsymmetric freeform optical system with neither rotational symmetry nor planar symmetry. An off-axis three-mirror geometry is proposed and direct design method developed for system. The field points are sampled across full FOV to control imaging quality object–image relationship. system, center of image plane greatly away from det...

The problem of propagation of plane wave including body and surface waves propagating in a transversely isotropic half-space with a depth-wise axis of material symmetry is investigated in details. Using the advantage of representation of displacement fields in terms of two complete scalar potential functions, the coupled equations of motion are uncoupled and reduced to two independent equations...

Two-dimensional distribution patterns of terahertz radiation generated in a laser single-color filament plasma are measured at several frequencies. In the low-frequency region (0.1–0.5 THz), propagates cone with minimum on axis. At higher frequencies, pattern depends significantly pulse polarization. case linear polarization, axial symmetry is broken: into two maxima located along axis perpendi...