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PÓS-GRADUAÇÃO EM FÍSICA
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(BrasilCentro de Ciências e Tecnologia - CCTPÓS-GRADUAÇÃO EM FÍSICAUFCGUniversidade Federal de Campina Grande, 2025-02-19)Active galaxy nuclei (AGNs) are galaxies whose nucleus emits a huge amount of energy with a non-thermal (non-stellar) spectrum. These astrophysical objects are among the most energetic phenomena in the Universe. Numerous ...
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(BrasilCentro de Ciências e Tecnologia - CCTPÓS-GRADUAÇÃO EM FÍSICAUFCGUniversidade Federal de Campina Grande, 2024-12-13)Molecular clouds are interstellar regions formed by gas and dust and can be studied as possible multi-messenger sources, emitting cosmic rays, gamma rays, and neutrinos. Cosmic rays are relativistic charged particles, ...
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(BrasilCentro de Tecnologia e Recursos Naturais - CTRNPÓS-GRADUAÇÃO EM EXPLORAÇÃO PETROLÍFERA E MINERALUFCGUniversidade Federal de Campina Grande, 2024-05-11)In the area of the former São Francisco Mine, now the Aura Borborema mine, metasedimentary units of mica schists of the Seridó Formation host a mineralized gold body. In this area, a structural analysis work was developed ...
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(BrasilCentro de Ciências e Tecnologia - CCTPÓS-GRADUAÇÃO EM FÍSICAUFCGUniversidade Federal de Campina Grande, 2024-06-07)The concept of gravitational lensing helps us understand how the gravity of massive compact objects deflects light from distant stars, resulting in distorted and magnified images. Thus, gravitational lenses provide ...
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(BrasilCentro de Ciências e Tecnologia - CCTPÓS-GRADUAÇÃO EM FÍSICAUFCGUniversidade Federal de Campina Grande, 2024-02-28)In 2007, a very bright radio pulse was identified in archival data from the Parkes Telescope in Australia, marking the beginning of a new branch of research in astrophysics. In the early years, Fast Radio Bursts (FRBs) ...
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(BrasilCentro de Ciências e Tecnologia - CCTPÓS-GRADUAÇÃO EM FÍSICAUFCGUniversidade Federal de Campina Grande, 2024-02-11)Quantum Field Theories (TQC) in (2+1)D have been widely studied both by comparison with Quantum Chromodynamics (QCD) and with two-dimensional systems in Condensed Matter Physics (FMC), such as graphene. In this work, ...
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(BrasilCentro de Ciências e Tecnologia - CCTPÓS-GRADUAÇÃO EM FÍSICAUFCGUniversidade Federal de Campina Grande, 2023-09-08)GNSS satellites are potent sources of RFI that impair radioastronomical observations. With a focus on BINGO and one of its branches, UIRAPURU, we plan to estimate the influence of primary GNSS constellations concerning ...
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(BrasilCentro de Ciências e Tecnologia - CCTPÓS-GRADUAÇÃO EM FÍSICAUFCGUniversidade Federal de Campina Grande, 2023-03-24)Neutron stars are one of the possible ends of life for massive stars that belong to the main sequence. They are small but extremely hot and dense, have very high gravities and can have extreme magnetic fields. The ...
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(BrasilCentro de Ciências e Tecnologia - CCTPÓS-GRADUAÇÃO EM FÍSICAUFCGUniversidade Federal de Campina Grande, 2024-02-06)In this study we examine the appearance of a Schwarzschild black hole surrounded by an accretion disk. In this context, a shadow is a dark area that is bounded by the image of rays emitted from the disk, which were not ...
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(BrasilCentro de Ciências e Tecnologia - CCTPÓS-GRADUAÇÃO EM FÍSICAUFCGUniversidade Federal de Campina Grande, 2023-09-06)We know that cosmology studies the cosmos, that is, the universe from its origin, structure, and evolution. Over the years, new discoveries have been made, and one of these discoveries was made by Hubble, in which the ...
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(BrasilCentro de Ciências e Tecnologia - CCTPÓS-GRADUAÇÃO EM FÍSICAUFCGUniversidade Federal de Campina Grande, 2024-02-07)Cosmology is a science that deals with questions that have long been of interest to humanity. It seeks to understand the universe by trying to find clues that reveal data about its origin, structure, and evolution, thus ...
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(BrasilCentro de Ciências e Tecnologia - CCTPÓS-GRADUAÇÃO EM FÍSICAUFCGUniversidade Federal de Campina Grande, 2023-12-11)This study investigated the nonlinear interactions between the ultrafast Kelvin wave and the diurnal tide using meteor radar wind data collected in São João do Cariri-PB (7.4°S; 36.5°W) during the year 2020. The main ...
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(BrasilCentro de Ciências e Tecnologia - CCTPÓS-GRADUAÇÃO EM FÍSICAUFCGUniversidade Federal de Campina Grande, 2023-08-16)In this work we study black string solutions under the consideration of rainbow gravity. We have analytically obtained the solution for four-dimensional black strings in terms of the functions f(E/Ep) and g(E/Ep) that ...
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(BrasilCentro de Ciências e Tecnologia - CCTPÓS-GRADUAÇÃO EM FÍSICAUFCGUniversidade Federal de Campina Grande, 2023-11-13)This dissertation considers that in Cosmology, the effects of Lorentz Invariance Violation (LIV) have implications for the inĆationary phase of the Universe. The idea is that in the initial phase, LIV acts non-locally in ...
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(BrasilCentro de Humanidades - CHPÓS-GRADUAÇÃO EM FÍSICAUFCGUniversidade Federal de Campina Grande, 2023-11-08)In this dissertation, we consider Rainbow gravity to be an appropriate model for studying the Schwarzschild Universe in the high energy regime. Given this, the temporal sector of the metric is modiĄed in such a way as ...
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(BrasilCentro de Humanidades - CHPÓS-GRADUAÇÃO EM FÍSICAUFCGUniversidade Federal de Campina Grande, 2023-11-03)Parity violation is a phenomenon present in particle decay and scattering processes, mediated by weak interactions and studied through the electroweak theory contained within the Standard Model. The parity violation ...
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(BrasilCentro de Ciências e Tecnologia - CCTPÓS-GRADUAÇÃO EM FÍSICAUFCGUniversidade Federal de Campina Grande, 2023-11-13)This dissertation considers that in Cosmology, the effects of Lorentz Invariance Violation (LIV) have implications for the inflationary phase of the Universe. The idea is that in the initial phase, LIV acts non-locally in ...
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(BrasilCentro de Ciências e Tecnologia - CCTPÓS-GRADUAÇÃO EM FÍSICAUFCGUniversidade Federal de Campina Grande, 2023-03-16)In this work there is an interesting in understanding how nickel (Ni2+) and magnesium (Mg2+) interact in the compound AxCo1-xTiO3, in its structural and vibrational properties, after atomic substitution in cobalt titanate ...
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(BrasilCentro de Ciências e Tecnologia - CCTPÓS-GRADUAÇÃO EM FÍSICAUFCGUniversidade Federal de Campina Grande, 2022-04-06)Knowing and deciphering the origin and future of the universe is a constant challenge that has led researchers to develop several techniques in order to analyze and understand it more and more. Radio astronomy, for example, ...
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(BrasilCentro de Ciências e Tecnologia - CCTPÓS-GRADUAÇÃO EM FÍSICAUFCGUniversidade Federal de Campina Grande, 2023-03-22)The Pulsar begins with the gravitational collapse of a star after it has depleted all of its nuclear fuel in its core. During this process, the star compresses until its electrons and protons merge, releasing a large ...