Addendum
发表于 2025-3-21 19:53:34
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pineal-gland
发表于 2025-3-21 23:47:29
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Anonymous
发表于 2025-3-22 01:32:38
,High-energy astrophysics — energies above 100 keV,mpact, energetic and violent objects in the Universe: neutron stars, stellar and supermassive black holes, supernovae including their remnants and cosmic rays interacting in the interstellar medium. An overview is given of the history of gamma-ray astronomy, the production mechanisms for gamma-rays and of the main results achieved.
Control-Group
发表于 2025-3-22 05:21:26
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ALLAY
发表于 2025-3-22 12:12:54
Goniopolarimetric techniques for low-frequency radio astronomy in space,ing systems, goniopolarimetric (or “direction-finding”) techniques have been developed. These techniques are presented, and their limitations are discussed. An example from a recent study on auroral radio emissions at Saturn from Cassini/RPWS measurements illustrates the techniques.
NICHE
发表于 2025-3-22 16:11:19
Imaging Michelson interferometers,aller angle sensitivity and its relative insensitivity to temperature. For these reasons SWFM filter systems were chosen as the imaging spectrometers for the Michelson Doppler Imager on . and for the Helioseismic and Magnetic Imager on the .. Theory and practice in space are described for SWFM filters.
Defraud
发表于 2025-3-22 17:22:16
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草率男
发表于 2025-3-22 23:50:29
Normal- and grazing-incidence gratings and mountings used in space,In most spectrometers, the grating is the component chosen to give the necessary spectral resolution either to filter the wavelength band or to obtain the line profiles. An overview of the grating properties and mountings used in space instrumentation is given.
Gourmet
发表于 2025-3-23 02:19:57
X-ray imaging with collimators, masks and grids,The basic principles of X-ray and gamma-ray imaging for astronomy with non-focusing optics are briefly reviewed. Specific topics include coded masks, and bigrid and multigrid collimators. The advantages and limitations of the various design options are discussed and illustrated with representative examples.
FLUSH
发表于 2025-3-23 08:44:46
Narrow-band imaging by use of interferometers,The principles of operation of imaging spectrometers based on the use of Fabry–Perot and Fourier transform interferometers are described. The advantages and disadvantages of the two techniques are discussed, and some examples are given of their application in space-borne instruments for astronomy and Earth observation.