Modulations to molecular high order harmonic generation by electron de Broglie wave (2008)
Chen, J., Chen, Y. J., Fan, J., Liu, J., Chen, S. G., He, X. T.
We present a new theory that the molecular high order harmonic generation in an intense laser field is determined by molecular internal symmetry and momentum distribution of the tunneling-ionized...
Wang, J., Wei, J. Y., He, X. T.
The well-documented E1 relationships are first extended to infrared color $\alpha(60,25)$ and flux ratio [OIII]/H$\beta_{\rm{n}}$ by comparing emission line properties to continuum properties in...
Variability of Optical \ion{Fe}{ii} Complex in Narrow-Line Seyfert 1 Galaxy NGC 4051 (2005)
Wang, J., Wei, J. Y., He, X. T.
The variability of optical FeII blends in NGC 4051 is examined from spectra extracted from the AGN Watch program.In our analysis, the FeII complex are subtracted and measured with the following...
Variability of Broad and Blueshifted Component of [OIII]$\lambda$5007 in IZWI (2005)
Wang, J., Wei, J. Y., He, X. T.
Although the existence of asymmetrical profile of [OIII]$\lambda$5007 has been discovered for ages, its filiation and physics are poorly understood. Two new spectra of I ZWI taken on Nov 16, 2001 and...
Liu, Hong, He, X. T., Chen, S. G., Zhang, W. Y.
We propose a new particle acceleration mechanism. Electron can be accelerated to relativistic energy within a few electromagnetic wave cycles through the mechanism which is named electromagnetic and...
Liu, Hong, He, X. T., Hora, Heinrich
In addition to the ponderomotive acceleration of highly relativistic electrons at interaction of very short and very intense laser pulses, a further acceleration is derived from the interaction of...
Xu, C. K., Sun, Y. C., He, X. T.
A sample of close major-merger pairs (projected separation ${\rm 5 \leq r \leq 20 h^{-1}}$ kpc, ${\rm K_s}$ band magnitude difference $\delta {\rm K_s} \leq 1$ mag) is selected from the matched...
Spatial Distribution of the Spin Vectors of the Disk Galaxies in the Virgo Cluster (1996)
Q. R. Yuan, F. X. Hu, X. T. He
In order to investigate the spatial orientation of the spin vectors of galaxies in the Virgo cluster, we carried out a detailed identification of all the certain and possible member disk galaxies...