NAIVE
发表于 2025-3-28 15:12:31
Advances in Information Systems Sciencewas restricted to use of the 21-cm line of HI and to optical absorption lines of several atoms (Na, Ca, Fe, K, Ti) toward nearby hot stars. To avoid excessive extinction, the optical techniques were limited both to distances of < 1 kpc from the Sun and to diffuse clouds (visual extinction < 2 magn).
Binge-Drinking
发表于 2025-3-28 20:21:01
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全国性
发表于 2025-3-28 23:37:44
James L. Massey,Oscar N. Garcíaiding a fascinating astrophysical laboratory for the study of maser processes, the intense emissions have been used as probes of the dynamics and physical conditions of their surroundings on scales as small as one astronomical unit throughout the Galaxy and in nearby galaxies. Since masers are found
ANT
发表于 2025-3-29 06:11:12
Advances in Information Systems Sciencerticularly suitable. Neutral atomic hydrogen, HI, is the main observed constituent of the interstellar medium; its physical properties are closely related to the properties of other Galactic constituents, both stellar and interstellar. The interstellar medium is transparent enough to hydrogen emissi
multiply
发表于 2025-3-29 10:14:45
Data Structures and Pattern Recognition,especially true for radio astronomy, which was the first of the astronomical sciences to penetrate the mysteries of the galactic center, but radio-frequency observations alone cannot provide more than a fraction of the knowledge which is required. Nowadays, the galactic center is accessible and comm
取回
发表于 2025-3-29 11:54:56
Automated Logic Design of Mos Networks,ty of stellar radio emission phenomena has been made clear, and in some cases there are striking similarities to solar radio emission. Therefore, a review of earlier stellar work, and solar radio phenomena, provides useful perspective. In this chapter, we will consider only continuum radio emission,
我不重要
发表于 2025-3-29 16:25:05
Advances in Information Systems Scienceynthesize heavy elements, and inject energy into the interstellar medium which can maintain turbulent cloud motions, heat a large fraction of the volume of the galaxy, and accelerate particles. Supernova remnants with their shock waves can also generate cosmic rays and compress clouds, perhaps start
neologism
发表于 2025-3-29 21:38:14
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GOAT
发表于 2025-3-30 00:02:22
Parallel and Distributed Environments,1953), the HI emission of the Magellanic Clouds was observed from Australia. Largely as a result of the pioneering efforts of M.S. Roberts, by the time of his comprehensive review (Roberts 1975; the reader is referred to this source for the early development of the field), HI in about 140 extragalac
Obsessed
发表于 2025-3-30 07:51:25
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