Image of an accreting general Ellis-Bronnikov wormhole
Valeria A. Ishkaeva, Sergey V. Sushkov
Abstract
Gravitational lensing properties of supermassive astrophysical objects, such as black holes and wormholes, provide a realistic way for their discovering and investigating. Various lensing effects in a wormhole spacetime have been widely studied in the literature. One of the most popular objects for investigation is the Ellis wormhole which represents the simplest wormhole geometry. The Ellis solution represents only a special case of a general wormhole solution found independently by Ellis and Bronnikov. Surprisingly but gravitational lensing properties of general Ellis-Bronnikov wormholes are practically not investigated. In this paper we explore in detail the propagation of light, forming a shadow and silhouette, and forming an image of an accretion disk in the spacetime of the Ellis-Bronnikov wormhole. As well we compare characteristics of images obtained for the Ellis-Bronnikov wormhole with those for the Schwarzschild black hole. This comparison could be useful for future observations of supermassive astrophysical objects.