atmospheric window


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atmospheric window

n
(General Physics) wavelengths of the electromagnetic spectrum that can be transmitted through the earth's atmosphere. Atmospheric windows occur in the visible, infrared, and radio regions of the spectrum
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The submm atmospheric window allow us to access the redshifted far-infrared emission from high-redshift galaxies and active galactic nuclei (AGN) thus pin-pointing intense star -formation activity in the early Universe associated with the assembly of massive galaxies and black holes.
Grasso, 2012: 10.35 [micro]m: Atmospheric window on the GOES-R Advanced Baseline Imager with less moisture attenuation.
The new model is determined and shown in Figure 3, in good agreement with the results of ITU-R model in the frequencies below 1 THz, however, using different continuum absorption parameters causes a slight deviation in the atmospheric window. As a result of this, the new model of this paper has been jointly developed with the previous model, which is valid at frequencies up to 10 THz based on HITRAN database.
To make the most of such balloon flights, we are proposing to make additional and frequent observations from high-altitude mountaintops where the Moon is more readily observable over much of its cycle, albeit only through atmospheric window bands and with greater atmospheric extinction.
Therefore, an overriding concern is matching the detector's response curve to what is called an atmospheric window. This is the range of IR wavelengths that readily passes through the atmosphere with little attenuation.
If the Earth emitted as a perfect black body and no atmospheric window were considered, [epsilon] = 1.
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