1989•Publications of the Astronomical Society of JapanRequires access

GINGA observations of 4U 1820-30 in NGC 6624 : the 11-minute flux modulation.

A. E. Sansom, M. G. Watson, Kazuo Makishima, Tadayasu Dotani

Abstract

Les modulations periodiques de 11 mn du flux de la binaire RX a faible masse 4U 1820-30, de l'amas globulaire NGC 6624, ont ete observees par le satellite Ginga. Les courbes de lumiere et le spectre RX sont etudies. L'origine de la periode, la nature de la modulation et les caracteristiques de la deuxieme composante sont discutees

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Key concepts: Physics, Astrophysics, Modulation (music), Flux (metallurgy), Astronomy, Acoustics, Materials science, Metallurgy