Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 81 for “"astronomia"”.
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Modelos cosmológicos: interfaces entre Astronomia e Artes no Ensino Médio
… as potencialidades da integração entre Arte e Astronomia como estratégia pedagógica interdisciplinar no Ensino Médio, visando trazer como a relação entre essas áreas podem auxiliar na interpretação e compreensão de modelos cosmológicos pelos estudantes. Desenvolvido no formato de pesquisa-ação, …
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Atividades Experimentais para o Ensino de Astronomia : domos geodésicos, globos e meteoritos
O ensino de astronomia em escolas públicas representa um constante desafio. Refletindo sobre essa prática, pudemos identificar 3 problemas: (i) Falta de familiari- dade com céu noturno e os objetos astronômicos, pois a luminosidade dos ambientes urbanos impede que a grande maioria das pessoas …
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O uso do dispositivo de Orrery no ensino de astronomia no Ensino Médio
… educação básica não há, em geral, a disciplina Astronomia. No entanto, conteúdos de astronomia estão inseridos nos temas abordados nas disciplinas de Ciências, Geografia e Física do ensino básico. Devido a isso, há uma lacuna no que compete à formação específica do professor neste conteúdo e à …
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Relação entre algumas características de periódicos de física e seus fatores de impacto
… Física de Partículas e Campos; Ótica; e, Astronomia e Astrofísica. Ao total analisou-se 376 periódicos. Foi elaborado um banco de dados no programa Statistics Packet for Social Science (SPSS) versão 8.0 para a coleta das informações necessárias para a realização do estudo, bem como para o …
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L'APPARATO DEI PMT DI ICARUS E IL SUO SISTEMA DI "SLOW CONTROL".
… in Fisica Nucleare, Fisica delle Particelle, Astronomia e Cosmologia sono innegabili. I neutrini sono presenti ovunque nell'Universo e sono denominati messaggeri misteriosi della natura. Nel 1930, Pauli propose uno schema in cui il decadimento beta possa essere un decadimento a tre corpi, in …
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MCAO for Extremely Large Telescopes: the cases of LBT and E-ELT
Several MCAO systems are under study to improve the angular resolution of the current and of the future generation large ground-based telescopes (diameters in the 8-40 m range). The subject of this PhD Thesis is embedded in this context. Two MCAO systems, in dierent realization phases, are …
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EoR in alternative cosmological scenarios
The aim of this Thesis is to investigate the possibility that the observations related to the epoch of reionization can probe not only the evolution of the IGM state, but also the cosmological background in which this process occurs. In fact, the history of the IGM ionization is indeed affected by …
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A panchromatic study of stellar populations in Galactic Globular Clusters
The aim of this Thesis is to investigate (i) how common the bimodal Blue Straggler Stars (BSS) radial distribution is in stellar clusters and (ii) which are the physical processes that can produce this bimodality. We discuss possible relations between the properties of the BSS radial distribution …
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X-Ray studies of the physics of matter around super-massive black-holes in nearby Seyfert galaxies
Seyfert galaxies are the closest active galactic nuclei. As such, we can use them to test the physical properties of the entire class of objects. To investigate their general properties, I took advantage of different methods of data analysis. In particular I used three different samples of objects, …
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A spectroscopic and photometric study of MSP companions in Galactic Globular Clusters
This Thesis is devoted to the study of the optical companions of Millisecond Pulsars in Galactic Globular Clusters (GCs) as a part of a large project started at the Department of Astronomy of the Bologna University, in collaboration with other institutions (Astronomical Observatory of Cagliari and …
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A spectroscopic and photometric study of stellar populations in a sample of clusters in the Magellanic Clouds
This Ph.D. Thesis has been carried out in the framework of a long-term and large project devoted to describe the main photometric, chemical, evolutionary and integrated properties of a representative sample of Large and Small Magellanic Cloud (LMC and SMC respectively) clusters. The globular …
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Properties of gas and dark matter in X-ray galaxy clusters with Sunyaev Zel'dovich measurements
I have studied entropy profiles obtained in a sample of 24 X-ray objects at high redshift retrieved from the Chandra archive. I have discussed the scaling properties of the entropy S, the correlation between metallicity Z and S, the profiles of the temperature of the gas, Tgas, and performed a …
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Modeling the cosmological co-evolution of supermassive black holes and galaxies
In this Thesis, we investigate the cosmological co-evolution of supermassive black holes (BHs), Active Galactic Nuclei (AGN) and their hosting dark matter (DM) halos and galaxies, within the standard CDM scenario. We analyze both analytic, semi-analytic and hybrid techniques and use the most recent …
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The VIMOS-VLT Deep Survey: the evolution of type-1 AGN
Quasars and AGN play an important role in many aspects of the modern cosmology. Of particular interest is the issue of the interplay between AGN activity and formation and evolution of galaxies and structures. Studies on nearby galaxies revealed that most (and possibly all) galaxy nuclei contain a …
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Statistical properties of Radio Halos and the re-acceleration model
Galaxy clusters occupy a special position in the cosmic hierarchy as they are the largest bound structures in the Universe. There is now general agreement on a hierarchical picture for the formation of cosmic structures, in which galaxy clusters are supposed to form by accretion of matter and …
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A high energy perspective of the co-evolution of black holes and their host galaxies
Thanks to the Chandra and XMM–Newton surveys, the hard X-ray sky is now probed down to a flux limit where the bulk of the X-ray background is almost completely resolved into discrete sources, at least in the 2–8 keV band. Extensive programs of multiwavelength follow-up observations showed that the …
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