Vestnik KRAUNC. Fiz.-Mat. Nauki. 2022. vol. 40. no. 3. pp. 227–238. ISSN 2079-6641
Investigation of internal gravitational waves by an infrared camera of the entire sky over the territory of Yakutia
O. V. Mordosova¹², I. I. Koltovskoi¹
¹Shafer Institute of Cosmophysical Research and Aeronomy of SB RAS, 31 Lenin Ave, 677027, Yakutsk, Republic of Yakutia, Russia
²M. K. Ammosov North-Eastern Federal University, 58 Belinsky Str, 677000, Yakutsk, Republic of Yakutia, Russia
E-mail: oleSmile@mail.ru, email@example.com
Internal gravitational waves are space-time fluctuations of air masses in the atmosphere. In addition to the longitudinal component, they also have a transverse component, which distinguishes them from ordinary acoustic waves. Significant progress has been made in the study of atmospheric dynamics over the past decades. Solving large-scale wave movements of air masses, particularly internal gravitational waves, remains a complex and urgent task. Spatial heterogeneity was studied to identify internal gravitational waves in the emission of the glow of the night sky at an altitude of about 87 km, where bands of hydroxyl molecules are emitted. The waves were recorded using an infrared digital camera of the whole sky installed at the optical polygon of Maymag (Yakutia). Data processing was performed by the method of temporal differentiation of images. One thousand one hundred forty frames were obtained for two seasons (2016-2017 and 2017-2018) with a pronounced wave periodic structure defined as internal gravitational waves. For each case of detected internal gravitational waves, the following parameters were determined: wave period, wavelength, propagation velocity, the direction of propagation, time, and duration of observation. The lengths of the recorded waves vary from 9.6 to 52.5 km (the average value is 25 km), the estimated periods range from 4.5 to 13.3 min (the average value is 7 min) and wave propagation is directed mainly to the northwest.
Key words: internal gravitational waves, the infrared camera of the whole sky, temporal differentiation, mesosphere.
Original article submitted: 29.10.2022
Revision submitted: 16.11.2022
For citation. Mordosova O. V., Koltovskoi I. I. Investigation of internal gravitational waves by an infrared camera of the entire sky over the territory of Yakutia. Vestnik KRAUNC. Fiz.-mat. nauki. 2022, 40: 3, 228-239. DOI: 10.26117/2079-6641-2022-40-3-227-238
Funding. This work was supported by the Russian Science Foundation (No. 22-27-20137, https://rscf.ru/project/22-27-20137/).
Competing interests. The authors declare that there are no conflicts of interest regarding authorship and publication.
Contribution and Responsibility. All authors contributed to this article. Authors are solely responsible for providing the final version of the article in print. The final version of the manuscript was approved by all authors.
The content is published under the terms of the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/deed.ru)
© Mordosova O. V., Koltovskoi I. I., 2022
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Mordosova Olesya Vladimirovna – Junior researcher of the Institute of the Yu.G. Shafer Institute of Cosmophysical Research and Aeronomy of SB RAS, Graduate student of the Institute of Physics and Technology of the M. K. Ammosov North-Eastern Federal University, Yakutsk, Russia ORCID 0000-0002-6342-6389.
Koltovskoi Igor Innokentievich – PhD (Phys.& Math.), Senior Research Fellow of the Institute of the Yu.G. Shafer Institute of Cosmophysical Research and Aeronomy of SB RAS, Yakutsk, Russia ORCID 0000-0002-6043-3196.