Zobrazeno 1 - 10
of 6 924
pro vyhledávání: '"Mass–radius relation"'
Autor:
Crumpler, Nicole R., Chandra, Vedant, Zakamska, Nadia L., Pallathadka, Gautham Adamane, Arseneau, Stefan, Fusillo, Nicola Gentile, Hermes, J. J., Badenes, Carles, Chakraborty, Priyanka, Gänsicke, Boris T., Schmidt, Stephen P.
Publikováno v:
ApJ 977 237 (2024)
Models predict that the well-studied mass-radius relation of white dwarf stars depends on the temperature of the star, with hotter white dwarfs having larger masses at a given radius than cooler stars. In this paper, we use a catalog of 26,041 DA whi
Externí odkaz:
http://arxiv.org/abs/2412.14331
Correlations Between the Neutron Star Mass-Radius Relation and the Equation of State of Dense Matter
Autor:
Sun, Boyang, Lattimer, James M.
We develop an analytic method of inverting the Tolman-Oppenheimer-Volkov (TOV) relations to high accuracy. This method is developed from the strong correlations that are shown to exist between the neutron star mass-radius curve and the equation of st
Externí odkaz:
http://arxiv.org/abs/2412.14645
The initial mass--radius relation of embedded star clusters is an essentially important boundary condition for understanding the evolution of embedded clusters in which stars form to their release into the galactic field via an open star cluster phas
Externí odkaz:
http://arxiv.org/abs/2409.20271
Observations reveal that magnetic fields on neutron stars (NSs) are in the range of $10^{8-15}$ G. Apart from being celestial bodies, NSs are normally rotating. In this work, we study the impact of a chaotic magnetic field on the mass-radius relation
Externí odkaz:
http://arxiv.org/abs/2410.11884
Autor:
Sousa, S. G., Adibekyan, V., Delgado-Mena, E., Santos, N. C., Rojas-Ayala, B., Barros, S. C., Demangeon, O. D. S., Hoyer, S., Israelian, G., Mortier, A., Soares, B. M. T., Tsantaki, M.
Publikováno v:
A&A 691, A53 (2024)
SWEET-Cat (Stars With ExoplanETs Catalogue) was originally introduced in 2013, and since then, the number of confirmed exoplanets has increased significantly. A crucial step for a comprehensive understanding of these new worlds is the precise and hom
Externí odkaz:
http://arxiv.org/abs/2409.11965
Autor:
Nashed, G. G. L., Bamba, Kazuharu
Publikováno v:
Phys.Dark Univ. 44 (2024) 101485
The objective of this research is to explore compact celestial objects while considering the framework of an extended gravitational theory known as $\mathcal{R}+f(\mathcal{G})$ gravity. The notations $\mathcal{R}$ and $\mathcal{G}$ denote the Ricci s
Externí odkaz:
http://arxiv.org/abs/2407.03703
Numerous models of neutron star (NS) equation of state (EoS) exist based on different superdense-matter physics approaches. Nevertheless, some NS properties show universal (EoS-independent) relations. Here, we propose a novel class of such universali
Externí odkaz:
http://arxiv.org/abs/2404.17647
Autor:
Maurya, S. K., Singh, Ksh. Newton, Mustafa, G., Govender, M., Errehymy, Abdelghani, Aziz, Abdul
Publikováno v:
JCAP09(2024)048
In this study we explore the astrophysical implications of pressure anisotropy on the physical characteristics of millisecond pulsars within the framework of $f(Q)$ gravity, {in particular $f(Q)=-\alpha\, Q - \beta$, where $\alpha$ and $\beta$ are co
Externí odkaz:
http://arxiv.org/abs/2403.20011
We present the observational mass-radius (M-R) relation for a sample of 47 magnetized white dwarfs (WDs) with the magnetic field strength (B) ranging from 1 to 773 MG, identified from the SDSS data release 7 (DR7). We derive their effective temperatu
Externí odkaz:
http://arxiv.org/abs/2403.13888
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