Long-term solar flux observations with Irkutsk Incoherent Scatter Radar (IISR) in 2011–2019

Artem Setov; Dmitriy Kushnarev; Roman Vasilyev; Andrey Medvedev

doi:10.12737/stp-63202004

UDC

LONG-TERM SOLAR FLUX OBSERVATIONS WITH IRKUTSK INCOHERENT SCATTER RADAR (IISR) IN 2011–2019 Long-term solar flux observations with Irkutsk Incoherent Scatter Radar (IISR) in 2011–2019

АА Аа

Published in Solar-Terrestrial Physics · Pages 29–33 · Rubric: Results of current research

DOI: https://doi.org/10.12737/stp-63202004

Received: 15.09.2020 Accepted: 22.09.2020 Published: 22.09.2020 Language of publication: ENG

Authors

Artem Setov

Dmitriy Kushnarev

Roman Vasilyev

ORCID ResearcherID

Andrey Medvedev

ORCID

Artem Setov

Academic degree: candidate of physical and mathematical sciences

Institute of Solar-Terrestrial Physics SB RAS Russian Federation · Irkutsk

Dmitriy Kushnarev

Academic degree: candidate of physical and mathematical sciences

Institute of Solar Terrestrial Physics SB RAS Russian Federation · Irkutsk

Roman Vasilyev

Academic degree: candidate of physical and mathematical sciences

Institute of Solar-Terrestrial Physics SB RAS Russian Federation · Irkutsk

ORCID ResearcherID

Andrey Medvedev

Academic degree: doctor of physical and mathematical sciences

Science rang: corresponding member author.academy_titles.32

Institute of Solar-Terrestrial Physics SB RAS Russian Federation · Irkutsk

ORCID

ABSTRACT

Irkutsk incoherent scatter radar (IISR) is an oblongish horn antenna that operates in a meter waveband (154–162 MHz), has a 0.5°×20° beam, and a frequency steering allowing us to tilt the beam by 30° to the south. Besides active measurements of ionospheric conditions and monitoring of space objects, the radar is regularly used for passive radio astronomical observations. From May to August, the Sun crosses the radar field of view and can be in the maximum of the radiation pattern for about two hours. The known shape of the radiation pattern and the high sensitivity of the receiver allow us to conduct calibrated measurements of the solar flux in solar flux units during this period. We have developed a new approach to the calibration, which can be applied to all IISR archival passive data. In the paper, we present long-term observations (2011–2019) of the solar flux in May and summer. We describe the measurement method, present daily average values of the solar flux for this period of passive measurements, and compare it with the solar activity F10.7 index and solar flux measurements made at the Australian observatory Learmonth at 245 MHz. We show that the daily average flux for the period of observations at a frequency of ~161 MHz generally has values from 5 to 10 sfu.

KEYWORDS

solar flux, IISR, calibration, F10.7, Learmonth

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Editor-in-Chief

Geliy Zherebtsov

solater@iszf.irk.ru

Deputy Editor-in-Chief

Aleksandr Stepanov

stepanov@gaoran.ru

Deputy Editor-in-Chief

Alexander Potapov

potapov@iszf.irk.ru

Executive Secretary of Editorial Board

Natalia Polyushkina

npol@iszf.irk.ru

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Setov A. G., Kushnarev D. S., Vasilyev R. V., Medvedev A. V. Long-term solar flux observations with Irkutsk Incoherent Scatter Radar (IISR) in 2011–2019 // Solar-Terrestrial Physics. 2020. no. 3. pp. 29-33. DOI: https://doi.org/10.12737/stp-63202004. (Date of access 16.09.2026).

MLA

Artem Setov, Kushnarev D. S., Vasilyev R. V., Medvedev A. V.. "Long-term solar flux observations with Irkutsk Incoherent Scatter Radar (IISR) in 2011–2019." Solar-Terrestrial Physics 6.3 (2020): 29-33. DOI: https://doi.org/10.12737/stp-63202004.

APA

Setov A. G., Kushnarev D. S., Vasilyev R. V., Medvedev A. V. (2020). Long-term solar flux observations with Irkutsk Incoherent Scatter Radar (IISR) in 2011–2019. Solar-Terrestrial Physics, 6(3), 29-33. https://doi.org/10.12737/stp-63202004

Chicago

Artem Setov, Kushnarev D. S., Vasilyev R. V., Medvedev A. V.. "Long-term solar flux observations with Irkutsk Incoherent Scatter Radar (IISR) in 2011–2019." Solar-Terrestrial Physics 6, no. 3 (2020): 29-33. https://doi.org/10.12737/stp-63202004.

WIKI

{{cite journal | author = Setov A. G., Kushnarev D. S., Vasilyev R. V., Medvedev A. V. | title = Long-term solar flux observations with Irkutsk Incoherent Scatter Radar (IISR) in 2011–2019 | journal = Solar-Terrestrial Physics | year = 2020 | volume = 6 | issue = 3 | pages = 29-33 | doi = 10.12737/stp-63202004 }}

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LONG-TERM SOLAR FLUX OBSERVATIONS WITH IRKUTSK INCOHERENT SCATTER RADAR (IISR) IN 2011–2019 Long-term solar flux observations with Irkutsk Incoherent Scatter Radar (IISR) in 2011–2019

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