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.
Results
Showing 1 to 20 of 82 for “"astrofisica"”.
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PROBING BAND MAGNETISM IN DIFFERENT DIMENSIONS: ENERGY, SPIN AND TIME-RESOLVED STUDIES
… student of the Scuola di Dottorato in Fisica, Astrofisica e Fisica Applicata at the Università degli Studi di Milano, that has been carried out since November 2019 at the Istituto Officina dei Materiali of the Consiglio Nazionale delle Ricerche (IOM-CNR) in the premises of the Elettra - …
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Fusioni di stelle di neutroni binarie con EOS microscopiche
… effettuato, in collaborazione con il gruppo di Astrofisica Relativista dell'Università Goethe (Francoforte sul Meno), che ha portato alla creazione di un nuovo codice, di cui sono l'autore principale e manutentore, che risolve le equazione dello spazio tempo nella formulazione ffCZ4, per …
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Testing the Leggett-Garg inequality with solar neutrinos
… Leggett-Garg, e su una scala di lunghezza astrofisica. Utilizzando l'energia dei neutrini per prevedere lo stato di sapore quando comincia ad attraversare il vuoto tra il sole e la Terra, possiamo costruire funzioni di correlazione due volte dello stato di sapore al momento della creazione, …
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Investigating Extended Gamma-Ray Sources with ASTRI and CTAO: Observation, Analysis and Modelling
… Telescopes) like the telescopes of the ASTRI (Astrofisica con Specchi a Tecnologia Replicante Italiana) Mini-Array and CTAO (Cherenkov Telescope Array Observatory), with the dual aim of addressing the role of young massive star clusters (YMSCs) in the acceleration of Galactic cosmic rays and …
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Investigating Extended Gamma-Ray Sources with ASTRI and CTAO: Observation, Analysis and Modelling
… Telescopes) like the telescopes of the ASTRI (Astrofisica con Specchi a Tecnologia Replicante Italiana) Mini-Array and CTAO (Cherenkov Telescope Array Observatory), with the dual aim of addressing the role of young massive star clusters (YMSCs) in the acceleration of Galactic cosmic rays and …
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Modellazione della rapidita di decadimento β nel plasma: studio teorico di PANDORA
… per studiare fenomeni di interesse in astrofisica – in particolare, la modifica della rapidità di decadimento β nei plasmi stellari e l’opacità degli elementi pesanti nelle kilonovae alla fase iniziale. Data la notevole complessità del sistema, è necessario sviluppare robusti …
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Procedure di modellizzazione rapide per la caratterizzazione di Supernovae Core Collapse e di transienti similari
… devono essere integrate con una descrizione astrofisica dei processi che regolano la loro emissione elettromagnetica, a loro volta legati alle caratteristiche del sistema progenitore e al meccanismo di esplosione. I modelli astrofisici in grado di derivare queste caratteristiche fisiche dalle …
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(Anti)deuteron production in and out of jets in p–Pb collisions at sqrt(sNN) = 5.02 TeV with the ALICE detector at the LHC [Produzione di (anti)deuteroni dentro e fuori dai jet in collisioni p-Pb a sqrt(sNN) = 5.02 TeV con il detector ALICE a LHC]
… non solo in fisica nucleare, ma anche in astrofisica. Infatti, si ritiene che in nostro universo fosse in questo stato della materia qualche microsecondo dopo il Big Bang, ed inoltre il QGP è un candidato per spiegare la composizione del core delle stelle di neutroni e di altri oggetti …
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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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