54,087 research outputs found
Understanding the multiwavelength observation of Geminga's TeV halo: the role of anisotropic diffusion of particles
In this letter we propose that the X-ray and the TeV observations in the
vicinity of Geminga can be understood in the framework of anisotropic diffusion
of injected electrons/positrons. This interpretation only requires the
turbulence in the vicinity of Geminga to be sub-Alfv\'enic with the local mean
magnetic field direction approximately aligned with our line of sight towards
Geminga, without invoking extreme conditions for the environment, such as an
extremely small diffusion coefficient and a weak magnetic field of strength
G as suggested in previous literature.Comment: 7 pages, 4 figures, including Supplemental Material, PRL accepte
Image Type Water Meter Character Recognition Based on Embedded DSP
In the paper, we combined DSP processor with image processing algorithm and
studied the method of water meter character recognition. We collected water
meter image through camera at a fixed angle, and the projection method is used
to recognize those digital images. The experiment results show that the method
can recognize the meter characters accurately and artificial meter reading is
replaced by automatic digital recognition, which improves working efficiency
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