Decaimento orbital em sistemas binários de anãs brancas: um estudo baseado no modelo do indutor unipolar
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Data
2025-04-24
Autores
Gave, Richardson Teixeira
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Universidade Federal do Espírito Santo
Resumo
The emission of gravitational waves is traditionally considered the primary mechanism of energy dissipation in double white dwarf binary systems; in some cases, it is seen as the only mechanism. Previous research identifies that, in systems with strong magnetic fields, dissipation through electromagnetic emission may also play a significant role in orbital evolution. We analyzed this contribution to the orbital dynamics of white dwarf binary systems and estimated possible magnetic field values using the Unipolar Inductor Model, adapted to stellar binary systems. The method involved selecting three ultracompact detached binary systems with short orbital periods: ZTF J2243+5242 (8.8 minutes), PTF J2322+0509 (20.0 minutes), and PTF J0533+0209 (20.6 minutes), all of which have observational data cataloged in the literature. The model construction and reproduction of the results were carried out using Python. The results indicate that, under specific magnetic field conditions (starting from 106 G), the contribution of electromagnetic emission has a significant impact on orbital dynamics, with direct implications for the calibration of detectors such as the Laser Interferometer Space Antenna (LISA). These f indings underscore the importance of considering multiple dissipative mechanisms to better understand and model the orbital dynamics of compact binary systems.
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Emissão eletromagnética , Ondas gravitacionais , Indutor unipolar