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Makarevich P. R. Larionov V. V. Vodopyanova V. V. Bulavina A. S. Ishkulova T. G. Venger M. P. Pastukhov I. A. Vashchenko A. V. 《Oceanology》2021,61(6):930-943
Oceanology - This paper describes the comprehensive studies of phytoplankton carried out in April 2018 in the northwestern Barents Sea, in the Polar Front region (74.8°–76.2° N), at... 相似文献
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The “circumpolar survey” technique allowed us to achieve a rather high antenna temperature sensitivity of 0.5 mK at 6 cm on
a fixed antenna with a relatively narrow frequency resolution band (600 kHz) and an angular resolution of 45″ × 7′. Starting
from 2007 we use a Fourier spectral analyzer with a survey band 10 times broader than that of previous observations. This
upgrade allowed us to rapidly perform repeated test observations, which confirmed the power-law nature and the frequency structure
of spatial spectra in two strips in the vicinity of the celestial pole in the 4′–16′ interval of angular periods. These observations
also showed that the Galactic CH molecular line that was by chance captured in our survey strip (Λ-doubling of rotational
transition) has nothing to do with the emission spectra we obtained. The angular pattern of emission in two main lines of
Λ-doubling (4847.84 and 4870.12 MHz) is absolutely different, whereas there is practically no maser amplification in the CH
line to explain this fact. Our observations also confirm the H110 α line (4874.157 MHz), which forms in the tenuous ionized Galactic hydrogen at such relatively high latitudes. Other features
of the spatial spectra also appear to be quite real, although their interpretation remains unclear and requires further studies. 相似文献
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S. V. Logvinenko A. P. Venger G. N. Il’in V. K. Dubrovich A. S. Morozov 《Astrophysical Bulletin》2008,63(2):193-200
The spectral measuring facility with a new Fourier analyzer for use with the radio telescope RATAN-600 is described and its experimental data are reported. 相似文献
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The monitoring of Jupiter synchrotron emission at 18 cm from July 15 till July 31 has shown a large flux density increase up to 29 per cents near July 22 and less but obvious disturbance in the next week. 相似文献
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