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- Universidade Federal do Rio Grande do NorteBR66 papers
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8 papers · 1 filter
The Tarantula Massive Binary Monitoring: III. Atmosphere analysis of double-lined spectroscopic systems
L. Mahy, H. Sana, M. Abdul-Masih +17
Accurate stellar parameters of individual objects in binary systems are essential to constrain the effects of binarity on stellar evolution. These parameters serve as a prerequisit…
The Tarantula Massive Binary Monitoring. IV. Double-lined photometric binaries
L. Mahy, L. A. Almeida, H. Sana +10
A high fraction of massive stars are found to be binaries but only a few of them are reported as photometrically variable. By studying the populations of SB2 in the 30 Doradus regi…
Properties of OB star-black hole systems derived from detailed binary evolution models
N. Langer, C. Schürmann, K. Stoll +38
The recent gravitational wave measurements have demonstrated the existence of stellar mass black hole binaries. It is essential for our understanding of massive star evolution to i…
Black holes quasinormal modes, Loop Quantum Gravity Immirzi parameter and nonextensive statistics
Everton M. C. Abreu, Jorge Ananias Neto, Edesio M. Barboza +1
It is argued that, using the black hole area entropy law together with the Boltzmann-Gibbs statistical mechanics and the quasinormal modes of the black holes, it is possible to det…
Galaxy cluster Sunyaev-Zel'dovich effect scaling-relation and type Ia supernova observations as a test for the cosmic distance duality relation
R. F. L. Holanda, L. R. Colaço, S. H. Pereira +1
In this paper, we propose a new test to the cosmic distance duality relation (CDDR), , where and are the luminosity and angular diameter distances, resp…
Phononic Topological States in 1D Quasicrystals
J. R. M. Silva, M. S. Vasconcelos, D. H. A. L. Anselmo +1
We theoretically analyze the spectrum of phonons of a one-dimensional quasiperiodic lattice. We simulate the quasicrystal from the classic system of spring-bound atoms with a force…