The Astral body is a subtle body posited by many philosophers, intermediate between the intelligent soul and the mental body, composed of a subtle material. Wikipedia

A subtle body posited by many religious philosophers Wikipedia Disambiguation

Syncretic concept in Theosophy and its derivatives, one of four or seven divisions of the Theosophical subtle body. Wikipedia Disambiguation

Concept of a subtle body, intermediate between the soul and body Wikidata

A ghost-like replica of one's physical body which supposedly inhabits or is somehow associated with the physical body, conceived as composed of some sort of ethereal material or as being non-physical and capable of sometimes separating from the physical body to travel to other places or to other realms of existence. Wiktionary

Ghost-like replica of one's physical body. Wiktionary (translation)