Cygnus X-3: a powerful galactic source of hard radiation

B.M. Vladimirskii, A.M. Gal’per, B.I. Luchkov^a, A.A. Stepanyan
^aMoscow State Engineering Physics Institute (State University), Kashirskoe shosse 31, Moscow, 115409, Russian Federation

A review is given of experimental and theoretical research on the galactic source Cyg X-3, whose electromagnetic spectrum extends from radio frequencies to ultrahigh-energy (E$_\gamma\sim$ 10$^{16}$ eV) $\gamma$-rays. Cyg X-3 also has a high x-ray luminosity (10$^{38}$ erg/sec) and exhibits diversified sporadic and periodic variations, most notably occasional radio outbursts and a 4h.8 infrared, x-ray, and $\gamma$-ray cycle. Analysis of the observations indicates that Cyg X-3 is a close binary system comprising a compact relativistic object (neutron star, black hole) and a dwarf companion losing mass. Particles are accelerated to 10$^{16}$ eV within the system.

PACS: 98.70.Dk, 98.70.Qy, 98.70.Rz, 97.60.Gb, 97.60.Jd, 97.60.Lf (all)
DOI: 10.1070/PU1985v028n02ABEH003852
URL: https://ufn.ru/en/articles/1985/2/c/
Citation: Vladimirskii B M, Gal’per A M, Luchkov B I, Stepanyan A A "Cygnus X-3: a powerful galactic source of hard radiation" Sov. Phys. Usp. 28 153–169 (1985)

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Оригинал: Владимирский Б М, Гальпер А М, Лучков Б И, Степанян А А «Мощный галактический источник жесткого излучения Лебедь X-3» УФН 145 255–284 (1985); DOI: 10.3367/UFNr.0145.198502c.0255

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