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pro vyhledávání: '"De Sa L"'
Binary population synthesis (BPS) is an essential tool for extracting information about massive binary evolution from gravitational-wave (GW) detections of compact object mergers. It has been successfully used to constrain the most likely permutation
Externí odkaz:
http://arxiv.org/abs/2410.11830
We perform a first study of the impact of varying two components of the initial conditions in binary population synthesis of compact binary mergers - the initial mass function, which is made metallicity- and star formation rate-dependent, and the orb
Externí odkaz:
http://arxiv.org/abs/2410.01451
Autor:
Horvath, J. E., Rocha, L. S., de Sá, L. M., Moraes, P. H. R. S., Barão, L. G., de Avellar, M. G. B., Bernardo, A., Bachega, R. R. A.
Context: Recently, Doroshenko and collaborators reported a very low-mass compact star, a Central Compact Object named XMMU J173203.3-344518 inside the supernova remnant HESS J1731-347. Its tiny mass is at odds with all calculations of minimum masses
Externí odkaz:
http://arxiv.org/abs/2303.10264
Autor:
de Sá, L. M., Bernardo, A., Bachega, R. R. A., Rocha, L. S., Moraes, P. H. R. S., Horvath, J. E.
The study of compact object populations has come a long way since the determination of the mass of the Hulse-Taylor pulsar, and we now count on more than 150 known Galactic neutron stars and black hole masses, as well as another 180 objects from bina
Externí odkaz:
http://arxiv.org/abs/2301.07780
In this work, we outline a mathematical description of biodiversity evolution throughout the Phanerozoic based on a simple coupled system of two differential equations and on the division of genera in two classes - Short-lived and Long-lived types, a
Externí odkaz:
http://arxiv.org/abs/2212.01693
The Strange Quark matter (SQM) hypothesis states that at extreme pressure and density conditions a new ground state of matter would arise, in which half of the \textit{down} quarks become strange quarks. If true, it would mean that at least the core
Externí odkaz:
http://arxiv.org/abs/2211.03687
Binary population synthesis provides a direct way of studying the effects of different choices of binary evolution models and initial parameter distributions on present-day binary compact merger populations, which can then be compared to empirical pr
Externí odkaz:
http://arxiv.org/abs/2211.02714
Autor:
de Sá, L. M., Bernardo, A., Bachega, R. R. A., Horvath, J. E., Rocha, L. S., Moraes, P. H. R. S.
The lack of objects between $2\,M_{\odot}$ and $5\,M_{\odot}$ in the joint mass distribution of compact objects has been termed "mass gap", and attributed mainly to the characteristics of the supernova mechanism precluding their birth. However, recen
Externí odkaz:
http://arxiv.org/abs/2211.01447
Autor:
Orlando, S., Bonito, R., Argiroffi, C., Reale, F., Peres, G., Miceli, M., Matsakos, T., Stehlé, C., Ibgui, L., de Sá, L., Chièze, J. P., Lanz, T.
(abridged) AIMS. We investigate the dynamics and stability of post-shock plasma streaming along nonuniform stellar magnetic fields at the impact region of accretion columns. We study how the magnetic field configuration and strength determine the str
Externí odkaz:
http://arxiv.org/abs/1309.5038
Autor:
Matsakos, T., Chièze, J. -P., Stehlé, C., González, M., Ibgui, L., de Sá, L., Lanz, T., Orlando, S., Bonito, R., Argiroffi, C., Reale, F., Peres, G.
Context. Theoretical arguments and numerical simulations of radiative shocks produced by the impact of the accreting gas onto young stars predict quasi-periodic oscillations in the emitted radiation. However, observational data do not show evidence o
Externí odkaz:
http://arxiv.org/abs/1307.5389