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Astron. Astrophys. 328, 595-597

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Flaring and modulation of infrared radiation
from the X-ray source Cygnus X-3

Krishna M.V. Apparao

Department of Physics, University of Bombay, Bombay 400098, India

Received 10 March 1997 / Accepted 1 August 1997


The modulation of infrared emission from the x-ray source Cyg x-3 is explained as due to free-free emission from gas in the wind given out by the binary companion to the x-ray source, and which is heated by the shock produced by the orbital motion of the compact object responsible for the x-rays. The observed infrared flaring occurs when the shock encounters clumps in the wind.

Key words: stars: Cyg X-3 - X-rays: stars - infrared: stars

© European Southern Observatory (ESO) 1997

Online publication: November 24, 1997
Last change: March 26, 1998