Skip to main content
SpringerLink
Log in

Spectroradiometry of the Solar Corona on the RATAN-600

  • Published:
Cosmic Research Aims and scope Submit manuscript

Abstract

Modern studies of solar radio emission are complicated by continuous power amplification and multifrequency external interference, which often completely overlap important frequency ranges. Many topical problems in solar radio astronomy require large effective areas of radio telescopes, high frequency and time resolutions, accurate spatial measurements, and a large dynamic range. It becomes relevant to change the concept of receiving recording equipment. This paper deals with topical problems of the physics of the solar corona in combination with optimal methods of observation with large instruments. The features and difficulties of combining high parameters—dynamic, spatial, temporal, and frequency resolutions—are considered. The proposed solutions of the new-generation observation complex implement the possibilities of intelligent selection of registration conditions in a multioctave mode with multichannel over 8000 channels/GHz with temporary permission up to 8 ms/spectrum. A multiobject observation mode becomes available from powerful flaring objects to faint structures of various nature. High-speed data processing makes it possible to implement an online mode of interference elimination, which is based on a fast statistical analysis of the spectrum with the selection of non-Gaussian (interference) structures. Methods for high-speed analysis of large-volume data (the principal component analysis method) and their presentation to the user are proposed. Examples of the operation of the complex in the range of 1–3 GHz are given. The prospects of a new approach for multiobject radio astronomy observations in the implementation of the RATAN-600 tracking mode are considered: from recombination lines to wide-range spectra, from low-contrast fluctuations to fast changes in flares, etc.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1.
Fig. 2.
Fig. 3.
Fig. 4.

REFERENCES

  1. Khaikin, V.B., Storozhenko, A.A., and Bogod, V.M., Radioheliographs and radio reflectors in solar plasma studies, Astrophys. Bull., 2019, vol. 74, pp. 221–233. https://doi.org/10.1134/S1990341319020111

    Article  ADS  Google Scholar 

  2. Bogod, V.M., Prospects for ground-based solar radio astronomy in Russia, Proc. All-Russian Conf. “Ground-Based Astronomy in Russia. 21st Century,” Nizhny Arkhyz, 2020, pp. 399–404. https://doi.org/10.26119/978-5-6045062-0-2_2020_399

  3. Bogod, V.M. and Yasnov, L.V., Determination of the structure of the coronal magnetic field using microwave polarization measurements, Sol. Phys., 2016, vol. 291, pp. 3317–3328. https://doi.org/10.1007/s11207-016-0936-8

    Article  ADS  Google Scholar 

  4. Bogod, V.M. and Kaltman, T.I., The magnetosphere of solar active region by radio observations in a wide wavelength range, Astron. Astrophys. Trans., 2019, vol. 31, no. 3. https://doi.org/10.31361/eaas.2018-2.008

  5. Bastian, T., Gary, D.E., Fleishman, G.D., et al., Measuring coronal magnetic fields with the Jansky Very Large Array and RATAN telescopes, American Geophysical Union, Fall Meeting, 2019, abs. no. SH41B-05.

  6. Yasnov, L.V., Bogod, V.M., and Gofman, A.A., Spectrum and physical conditions in microflare generation regions at decimeter-wave frequencies, Astrophys. Bull., 2017, vol. 72, no. 1, pp. 58–66. https://doi.org/10.1134/S1990341317030075

    Article  ADS  Google Scholar 

  7. Nakariakov, V.M., Anfinogentov, S., Storozhenko, A.A., et al., Quasi-periodic pulsations in a solar microflare, Astrophys. J., 2018, vol. 859, no. 2, p. 154. https://doi.org/10.3847/1538-4357/aabfb9

    Article  ADS  Google Scholar 

  8. Karlický M., Rybák, J., and Monstein, C., Fourier power spectra of solar noise storms, Sol. Phys., 2018, vol. 293, no. 10, p. 143. https://doi.org/10.1007/s11207-018-1367-5

    Article  ADS  Google Scholar 

  9. Dravskikh, A.F. and Dravskikh, Yu.A., The possibility of observing several hydrogen radio lines in solar activity features over sunspots, Astron. Rep., 2021, vol. 65, pp. 705–714. https://doi.org/10.1134/S1063772921080047

    Article  ADS  Google Scholar 

  10. Khersonskii, V.K. and Varshalovich, D.A., The possibility of observing recombination lines in solar radiation, Astron. Zh., 1980, no. 57, pp. 621–623.

  11. Dravskikh, A.F., Peterova, N.G., and Topchilo, N.A., Profile of the 9.85-GHz neutral hydrogen line, Astron. Rep., 2019, vol. 68, no. 3, pp. 229–237. https://doi.org/10.1134/S1063772919030028

    Article  ADS  Google Scholar 

  12. Bogod, V.M., Lebedev, M.K., Ovchinnikova, N.E., et al., Spectroradiometry of the solar corona on large instruments, Sb. dokladov Vserossiiskoi konferentsii “Fizika solnechnoi plazmy” (Proc. All-Russ. Conf. “Physics of Solar Plasma”), Space Res. Inst., February 7–11, 2022.

  13. Lebedev, M.K., Ripak, A.M., and Bogod, V.M., High-speed spectroradiometry using a statistical method of RFI suppression for radio observations with RATAN-600, Proc. All-Russ. Conf. “Ground-Based Astronomy in Russia. 21st Century,” Nizhny Arkhyz, Russia, September 21–25, 2020, p. 413. https://doi.org/10.26119/978-5-6045062-0-2_2020_399

  14. Tsybulev, P.G. New-generation data acquisition and control system for continuum radio-astronomic observations with RATAN-600 radio telescope: Development, observations, and measurements, Astrophysical Bulletin, 2011, vol. 66, no. 1, pp. 109–122. https://doi.org/10.1134/S199034131101010X

  15. Nita, G.M., Spectral kurtosis statistics of transient si-gnals, Mon. Not. R. Astron. Soc., 2016, vol. 458, pp. 2530–2540. https://doi.org/10.1093/mnras/stw550

    Article  ADS  Google Scholar 

  16. Yujiang Dou, Gary, D.E., Zhiwei Liu, et al., The Korean Solar Radio Burst Locator (KSRBL), Publ. Astron. Soc. Pac., 2009, vol. 121, no. 879, pp. 512–526. https://doi.org/10.1086/599624

    Article  ADS  Google Scholar 

  17. Bro, R. and Smilde, A.K., Principal component analysis, Anal. Methods, 2014, vol. 6, pp. 2812–2831. https://doi.org/10.1039/c3ay41907j

    Article  Google Scholar 

  18. Storozhenko, A., Lebedev, M., Ovchinnikova, N., et al., Tracking mode in the southern sector with the periscope of the RATAN-600 radio telescope, Proc. All-Russ. Conf., Nizhny Arkhyz, September 21–25, 2020. https://doi.org/10.26119/978-5-6045062-0-2 2020_407

  19. Storozhenko, A.A., Bogod, V.M., Lebedev, M.K., et al., RATAN-600 receiving mirror automatic control system for tracking mode, XXV Vserossiiskaya ezhegodnaya konferentsiya “Solnechnaya i solnechno-zemnaya fizika 2021” (XXV All-Russian Annual Conference “Solar and Solar-Terrestrial Physics 2021”), St. Petersburg, October 4–8, 2021.https://doi.org/10.31725/0552-5829-2021-249-252

Download references

ACKNOWLEDGMENTS

Some of the observational data were obtained using the unique scientific installation of the RATAN-600 radio telescope of the Special Astrophysical Observatory of the Russian Academy of Sciences.

Funding

Work on the processing of observational data was carried out under the grant of the Ministry of Science and Higher Education of the Russian Federation 075-15-2022-250 (13.MNPMU.21.0003).

Author information

Authors and Affiliations

  1. St. Petersburg Branch, Special Astrophysical Observatory of the Russian Academy of Sciences, St. Petersburg, Russia

    V. M. Bogod, M. K. Lebedev, N. E. Ovchinnikova, A. M. Ripak & A. A. Storozhenko

Authors
  1. V. M. Bogod
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. M. K. Lebedev
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. N. E. Ovchinnikova
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. A. M. Ripak
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. A. A. Storozhenko
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to V. M. Bogod.

Ethics declarations

The authors declare that they have no conflicts of interest.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Bogod, V.M., Lebedev, M.K., Ovchinnikova, N.E. et al. Spectroradiometry of the Solar Corona on the RATAN-600. Cosmic Res 61, 27–33 (2023). https://doi.org/10.1134/S001095252301001X

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1134/S001095252301001X

Search

Navigation