Low-frequency radio recombination lines: observations and data processing
Heading:
| 1Konovalenko, AA, 1Stepkin, SV, 1Vasilkovskiy, EV 1Institute of Radio Astronomy of the National Academy of Science of Ukraine, Kharkiv, Ukraine |
| Space Sci.&Technol. 2017, 23 ;(1):50-53 |
| https://doi.org/10.15407/knit2017.01.050 |
| Publication Language: English |
Abstract: In this report, the observations of radio recombination lines which are carried out with radio telescope UTR-2 using a 4096-channel autocorrelometer and 16-bit digital spectral analyzer are described. The correct processing and interpretation of observational results provide new information about the basic parameters of the interstellar medium – electron temperature, electron density, element abundances, distribution of ionized gas. Analysis of radio recombination lines’ parameters provides new opportunities not only for astrophysics but also for physical science as a whole.
|
| Keywords: quantum transitions, radio recombination lines, radio telescope UTR-2, spectral analyzer |
References:
1. Konovalenko A. A. Radiospektrometr dlya poiska slabyh spektralnyh liniy. Pribory i tehnika eksperimenta (Instruments and Experimental Techniques), N 6, 123—126 (1981) [in Russian].
2. Sorochenko R. L., Gordon М. А. Radio recombination lines. Physics and astronomy, 392 p. (Fizmatlit, Moscow, 2003) [in Russian].
3. Braude S. Ia., Megn A. V., Riabov B. P., et al. Decametric survey of discrete sources in the Northern sky. I. The UTR-2 radio telescope. Experimental techniques and data processing. Astrophys. and Space Sci., 54 (1), 3—36 (1978).
https://doi.org/10.1007/BF00637902
2. Sorochenko R. L., Gordon М. А. Radio recombination lines. Physics and astronomy, 392 p. (Fizmatlit, Moscow, 2003) [in Russian].
3. Braude S. Ia., Megn A. V., Riabov B. P., et al. Decametric survey of discrete sources in the Northern sky. I. The UTR-2 radio telescope. Experimental techniques and data processing. Astrophys. and Space Sci., 54 (1), 3—36 (1978).
https://doi.org/10.1007/BF00637902
4. Konovalenko A. A., Sodin L. G. The 26.13 MHz absorption line in the direction of Cassiopeia A. Nature, 294 (5837), 135—136, (1981).
https://doi.org/10.1038/294135a0
5. Konovalenko A., Sodin L., Zakharenko V. The modern radio astronomy network in Ukraine: UTR-2, URAN and GURT. Experimental Astron., 42 (1), 11—48 (2016).
https://doi.org/10.1007/s10686-016-9498-x
6. Shaver P. A. Theoretical intensities of low-frequency recombination lines. Pramana, N 5, 1—28 (1975).
7. Stepkin S. V., Konovalenko A. A., Kantharia N. G., Udaya Shankar N. Radio recombination lines from the largest bound atoms in space. Mon. Notic. Roy. Astron. Soc., 374, 852—856 (2007).
https://doi.org/10.1111/j.1365-2966.2006.11190.x
https://doi.org/10.1038/294135a0
5. Konovalenko A., Sodin L., Zakharenko V. The modern radio astronomy network in Ukraine: UTR-2, URAN and GURT. Experimental Astron., 42 (1), 11—48 (2016).
https://doi.org/10.1007/s10686-016-9498-x
6. Shaver P. A. Theoretical intensities of low-frequency recombination lines. Pramana, N 5, 1—28 (1975).
7. Stepkin S. V., Konovalenko A. A., Kantharia N. G., Udaya Shankar N. Radio recombination lines from the largest bound atoms in space. Mon. Notic. Roy. Astron. Soc., 374, 852—856 (2007).
https://doi.org/10.1111/j.1365-2966.2006.11190.x