Journal of Natural Sciences Research Journal of Natural Sciences Research Журнал естественнонаучных исследований 2500-0489 2500-0489 91697 Астрофизика Astrophysics Астрофизика The Mechanism of Formation of "Odd Radio Circles" Механизм формирования «странных радио-кругов» Поройков С. Ю. Poroikov Sergey Yu. sporoykov@mail.ru

кандидат физико-математических наук;

candidate of physical and mathematical sciences;

 Московский государственный университет имени М.В.Ломоносова Lomonosov Moscow State University 08 12 2024 08 12 2024 9 4 82 99 09 10 2024 01 11 2024 https://naukaru.ru/en/nauka/article/91697/view

Обнаружены «странные радио-круги» диаметром до 300 кпк, содержащие десятки сфериче-ских сгустков диаметром ~15 кпк. Теплый газ в радио-кругах излучает в УФ линиях ряда ионов (О, Mg, Ne) с температурой ~104 К, уширенных динамикой газа (~200 км/с), обуслов-ленной ударной волной. Излучение в оптическом и ближнем ИК диапазоне связано со звездным континуумом. Радио-круг могут образовать ударные волны сверхновых, усилен-ные звездным ветром голубых звезд в звездном потоке возрастом ≥109 лет, содержащем ≥3∙108 звезд, образованном галактикой массой ~1010 М○. Звездообразование в звездном по-токе может инициировать газ, нагребенный ударной волной (оттекающий в ее хвост), обра-зуемой вокруг газовой короны галактики – спутника, движущейся в межгалактическом газе.

"Odd radio circles" up to 300 kpc in diameter, containing dozens of spherical clumps ~15 kpc in di-ameter were detected. Warm gas in the radio circles emits in the UV lines of a number of ions (O, Mg, Ne) with a temperature of ~104 K, broadened by the gas dynamics (~200 km/s) caused by the shock wave. Emission in the optical and near-IR ranges is associated with the stellar continuum. The radio circle may be formed by supernova shock waves amplified by the stellar wind of blue stars in a stellar stream ≥109 years old, containing ≥3∙108 stars, formed by a galaxy with a mass of ~1010 M○. Star formation in a stellar stream can be initiated by gas raked by a shock wave (flowing into its tail) formed around the gas corona of a satellite galaxy moving in intergalactic gas.

 странные радио-круги звездные потоки сверхновые звездный ветер odd radio circles star streams supernovae stellar wind

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