1. Polarización de la luz: conceptos básicos y aplicaciones en astrofísica

Abstract The astrophysics allows to understand applications about physical laws and it constitutes a powerful, didactic tool for the teaching. Concepts of the electromagnetism, such as the polarization of the light let us study different astronomical objects, such as stars, planets and galaxies. This work shows an historical revision about the polarization,

Rev. Bras. Ensino Fís.. Publicado em: 02/08/2018

2. Condensação de kaons em estrelas de nêutrons

Nesta tese descrevemos as propriedades de estrelas de nêutrons e pulsares cuja matéria nuclear apresenta processo de transição de fase da matéria hadrônica pura para a matéria hadrônica com um condensado de anti-káons em estado de onda-s. A matéria nuclear da estrela de nêutrons é considerada em equilíbrio β e apresenta energia térmica desprez

Publicado em: 2010

3. Radial oscillations of quark stars: effect of color superconductivity / Oscilações radiais de estrelas de quarks: efeito da superconditividade de cor

The study of radial oscillations of compact stars offers valuable information about their structural stability. These oscillations are also important because they can be observed in the microstructure of the emission prole of certain pulsars and because they can excite the non-radial modes which give rise to gravitational waves. In this work we investigate t

IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/11/2009

4. Electrically charged pulsars

In the present work we investigate one possible variation on the usual electrically neutral pulsars: the inclusion of electric charge through a naive prescription. We study the effect of electric charge in pulsars assuming that the charge distribution is proportional to the energy density. All calculations were performed for equations of state obtained at ze

Brazilian Journal of Physics. Publicado em: 2007-12

5. Spin flavor oscillation of neutrinos in rotating gravitational fields and their effects on pulsar kicks

The origin of high velocities of pulsars is studied by considering the spin-flip conversion of neutrinos propagating in a gravitational field of a protoneutron star. For a rotating gravitational source (such as pulsars) with angular velocity , one finds that the spin connections (entering in the Dirac equation written in curved space time) induce an addition

Brazilian Journal of Physics. Publicado em: 2005-06

6. Estudo das fontes astrofísicas candidatas à observação pelo detector de ondas gravitacionais "Mario Schenberg" / The study of possible gravitational wave sources for the brazilian antenna schenberg

O detector Mario SCHENBERG operará em uma banda de freqüências de 3,0 a 3,4 kHz. Nesta faixa do espectro existem algumas fontes astrofísicas de ondas gravitacionais (OGs), tais como: colapsos do núcleo estelar que geram eventos de supernovas; instabilidades hidrodinâmicas em estrelas de nêutrons; oscilações e estelemotos em estrelas de nêutrons que

Publicado em: 2002

7. Estudo das fontes astrofísicas candidatas à observação pelo detector de ondas gravitacionais "Mario Schenberg" / The study of possible gravitational wave sources for the brazilian antenna schenberg

O detector Mario SCHENBERG operará em uma banda de freqüências de 3,0 a 3,4 kHz. Nesta faixa do espectro existem algumas fontes astrofísicas de ondas gravitacionais (OGs), tais como: colapsos do núcleo estelar que geram eventos de supernovas; instabilidades hidrodinâmicas em estrelas de nêutrons; oscilações e estelemotos em estrelas de nêutrons que

Publicado em: 2002

8. Magnetars

Recent x-ray observations have shown that a substantial fraction of newly born neutron stars have magnetic fields of several 1014 G. They reveal themselves as soft gamma repeaters and anomalous x-ray pulsars and may account for the missing radio pulsars in young supernova remnants.

The National Academy of Sciences.

9. Glitches and pinned vorticity in the Crab pulsar

We suggest that the glitch behavior observed in the Crab pulsar is associated with vorticity jumps induced by a starquake or a comparable external fluctuation in the weakly pinned vortex region expected in the crust of a young neutron star, and that the differences in the glitch behavior of the Crab, Vela, and older pulsars may be explained on evolutionary g

10. Atomic Regime in Which the Magnetic Interaction Dominates the Coulomb Interaction for Highly Excited States of Hydrogen

The atomic regime in which the interaction of the electron with an external magnetic field dominates the Coulomb interaction with the nucleus, relevant to pulsars, can be realized at laboratory magnetic fields for discrete autoionized states of hydrogen, at energies above the ionization limit. Approximate wave functions, energy levels, and electric dipole tr

11. Charged-coupled detector sky surveys.

Sky surveys have played a fundamental role in advancing our understanding of the cosmos. The current pictures of stellar evolution and structure and kinematics of our Galaxy were made possible by the extensive photographic and spectrographic programs performed in the early part of the 20th century. The Palomar Sky Survey, completed in the 1950s, is still the