aat Acta Astrophys. Tau. Acta Astrophysica Taurica 2712-925X Kiselev Nikolai Nikolaevich, Mosсow, settlement Moskovskii, Tat'yanin Park Str., 12, Moscow, Russia. RU 125 RQGMLN Instruments and Methods Bauman Moscow State Technical University Radio Telescope RT-7.5: status and development prospects Smirnova Viktoriya Khaikin Vladimir Makoev German Ryzhov Vladimir Crimean Astrophysical Observatory, Nauchny 298409 Special Astrophysical Observatory RAS (Saint-Petersburg Department), Pulkovskoe sh. 65, Saint Petersburg 196140, Russia Special Astrophysical Observatory RAS (Saint-Petersburg Department), Pulkovskoe sh. 65, Saint Petersburg 196140, Russia Bauman Moscow State Technical University, 2-nd Baumanskaya 5, Moscow 105005, Russia 26 06 2026 7 2 4 9 04 05 2026 Copyright (c) 2026 Viktoriya Smirnova, Vladimir Khaikin, German Makoev, Vladimir Ryzhov 2026 Viktoriya Smirnova, Vladimir Khaikin, German Makoev, Vladimir Ryzhov The metadata for this submission is licensed under a Creative Commons Attribution 4.0 International License. Copyright and publishing rights for texts published in Acta Astrophysica Taurica is retained by the authors, with first publication rights granted to the journal.Texts are free to use with proper attribution and link to the licensing (Creative Commons Attribution 4.0 International).

The paper describes the characteristics and current state of the Bauman Moscow State Technical University (BMSTU) millimeter radio telescope RT-7.5. We present the results of modeling in multi-beam operating mode at the RT-7.5. A concept of low-cost matrix receivers operating at the wavelengths of 3 and 2 mm is proposed, which can significantly reduce the time needed to obtain solar maps. The expected model images of solar subterahertz flares with a positive spectral slope at 3 and 2 mm are presented.

Sun radio telescope multi-beam operating mode matrix receivers solar flares millimeter radio emission chromosphere The work was supported by the RFBR grant 20-52- 26006 Czech Republic_a (V.V. Smirnova), the RSF grant 23-72-00041 (G.A. Makoev), and partially supported by the Ministry of Science and Higher Education, research project No. 1021051101548-7-1.3.8 Borovik V.N., 1997. Study of the quiet Sun in the microwave range on the RATAN-600 and BPR radio telescopes in the XX-XXII solar activity cycles, PhD thesis. Nizhnij Arkhyz: Astrofizika, radioastronomiya. (In Russ.) Ryzhov V.S., Shivrina P.V., Smirnova V.V., 2023. Izv. Krymsk. Astrofiz. Observ., vol. 119, no. 1, pp. 11–18. (In Russ.) Khaikin V.B., Makoev G.A., 2023. Trudy IPA RAN, in press. (In Russ.) Khaikin V.B., Bursov N.N., Vikoruk D.G., Druzinin M.Y., Yakovlev S.V., Kornev A.V., 2013. Proceedings of the 7th European Conference on Antennas and Propagation, pp. 4090–4099. Khaikin V., Lebedev M., Shmagin V., Zinchenko I., Vdovin V., et al., 2020. Proceedings of the 7th All-Russian Microwave Conference, pp. 47–51. Kontar E.P., Motorina G.G., Jeffrey N.L.S., Tsap Y.T., Fleishman G.D., Stepanov A.V., 2018. Astron. Astrophys., vol. 620, id. A95, pp. 1–6. Pelyushenko S.A., 1982. Radiophys. Quantum. Electron., vol. 25, no. 11, pp. 906–913. Ruze J., 1966. Proceedings of the IEEE, vol. 54, no. 4, pp. 633–640. Shustikov V.Y., Shumov A.V., Ryzhov V.S., Zhiltsov A.V., 2012. Vestnik MGTU im. N.E. Baumana. Priborostroenie, no. 7, pp. 277–288. (In Russ.) Shustikov V.Y., Shumov A.V., Tsap Y.T., Zharkova N.A., Morgachev A.S., et al., 2015. Nauka i Obrazovanie. MGTU im. N.E. Baumana, no. 9, pp. 106–121. (In Russ.) Smirnova V.V., Tsap Y.T., Shumov A.V., Morgachev A.S., Motorina G.G., et al., 2016. Nauka i Obrazovanie. MGTU im. N.E. Baumana, no. 12, pp. 85–97. (In Russ.) Tsap Yu.T., Smirnova V.V., Morgachev A.S., Motorina G.G., Kontar E.P., et al., 2016. Advances in Space Research, vol. 57, iss. 7, pp. 1449–1455.