CH Cygni X‐Ray Jet Activity and Multicomponent Structures

Abstract

In this paper we report detection of multiple component structures in a Chandra X-ray image obtained in 2001 March of the nearby symbiotic interacting binary system CH Cyg. These components include a compact central source, an arclike structure or a loop extending to 1.5" (400 AU) from the central source associated with the 1997 jet activity, and possibly a newly formed jet extending to ~150 AU from the central source. The structures are also visible in VLA and HST images obtained close in time to the Chandra observations. The emission from the loop is consistent with optically thin thermal X-ray emission originating from a shock resulting from interaction of the jet ejecta with the dense circumbinary material. The emission from the central source originates within <50 AU region, and is likely associated with the accretion disk around the white dwarf. CH Cyg is only the second symbiotic system with jet activity detected at X-ray wavelengths, and the Chandra high angular resolution image, combined with the VLA and HST images, provides the closest view of the region of jet formation and interaction with the circumbinary material in a symbiotic binary.