Oscillating Magnetized Color Superconducting Quark Stars

Universe

Lucas Tonetto¹  Milva Gabriela Orsaria²  Marcos Osvaldo Celi²  Mauro Mariani² 

[1] Dipartimento di Fisica, “Sapienza” University of Rome, Piazzale A. Moro, 5, 00185 Roma, Italy;Grupo de Gravitación, Astrofísica y Cosmología, Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata, Paseo del Bosque S/N, La Plata 1900, Argentina;

关键词: neutron stars;    quark stars;    color superconductivity;    di-quarks;    magnetic field;    oscillations (including pulsations);   

DOI  :  10.3390/universe8050272

来源: DOAJ

【 摘 要 】

The main objective of this work is to study the structure, composition, and oscillation modes of color superconducting quark stars with intense magnetic fields. We adopted the MIT bag model within the color superconductivity CFL framework, and we included the effects of strong magnetic fields to construct the equation of state of stable quark matter. We calculated observable quantities, such as the mass, radius, frequency, and damping time of the oscillation fundamental f mode of quark stars, taking into account current astrophysical constraints. The results obtained show that color superconducting magnetized quark stars satisfy the constraints imposed by the observations of massive pulsars and gravitational wave events. Furthermore, the quantities associated with the oscillation f mode of these objects fit the universal relationships for compact objects. In the context of the new multi-messenger gravitational wave astronomy era and the future asteroseismology of neutron stars, we hope that our results contribute to the understanding of the behavior of dense matter and compact objects.

【 授权许可】

Unknown