A Theoretical Model of Non-conservative Mass Transfer with Non-uniform Mass Accretion Rate in Close Binary Stars

TL;DR

This paper introduces a new mathematical model for non-conservative mass transfer in close binary stars, accounting for decreasing accretion rates over time and mass, with the process ceasing at a critical mass limit.

Contribution

It presents a novel theoretical framework that models variable mass accretion rates in close binary systems, addressing complexities of non-conservative mass transfer.

Findings

Model captures decreasing accretion rate over time.

Identifies a critical mass limit for the accreting star.

Provides a basis for further dynamic simulations.

Abstract

Mass transfer in close binaries is often non-conservative and the modeling of this kind of mass transfer is mathematically challenging as in this case due to the loss of mass as well as angular momentum the governing system gets complicated and uncertain. In the present work a new mathematical model has been prescribed for the non-conservative mass transfer in a close binary system taking in to account the gradually decreasing profile of the mass accretion rate by the accreting star with respect to time as well as with respect to the increase in mass of the accreting star. The process of mass transfer is understood to occur up to a critical mass limit of the accreting star beyond which this process may cease to work.