Redefining the Lifetime of Astrophysical Objects / 天体寿命の再定義

Short Abstract This paper proposes a redefinition of astrophysical lifetime within the framework of BFSSU/DMF cosmology. Conventional lifetime models generally describe the evolution of astrophysical objects through energy consumption, cooling, fuel depletion, or characteristic dynamical timescales. While these approaches have achieved substantial success, the diversity of evolutionary pathways among objects with similar physical properties suggests that lifetime may not always be represented adequately as a uniquely predetermined quantity. Within the BFSSU/DMF framework, astrophysical objects are reinterpreted as temporarily stable configurations of Dynamic Mass Flow (DMF), characterized by flow intensity, spatial gradients, and phase states. From this perspective, the lifetime of an astrophysical object is defined not simply as the time required to exhaust an energy reservoir, but as the duration for which its underlying flow structure remains stable. This structural definition introduces three principal factors governing lifetime: DMF inflow, structural configuration, and stability. Because these factors evolve dynamically and depend on environmental interactions and historical development, astrophysical lifetime becomes inherently non-unique and may be more appropriately represented as a dynamic or probabilistic quantity rather than a single fixed value. The framework is applied conceptually to stars, planets, black holes, and galaxies, allowing these apparently different objects to be interpreted as distinct stable or transitional configurations within a common DMF structure. Existing astrophysical models are not rejected; rather, their successful descriptions of observable phenomena are retained while their underlying structural interpretation is reconsidered. The study further identifies observational pathways through luminosity, structural evolution, planetary activity, magnetic fields, and variations among astrophysical objects with comparable conventional parameters. These provide potential routes for examining whether differences in lifetime and evolutionary history correlate systematically with the structural variables proposed by the DMF framework. The present study is primarily conceptual and does not claim a completed quantitative theory of astrophysical lifetime. Its purpose is to establish a structural foundation for treating lifetime as an emergent property of dynamically maintained cosmic structures and to provide a basis for future mathematical formulation and observational testing. https://orcid.