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 80 for “"luminosities"”.
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"A Multitude of Little Luminosities": Dissociative Multiplicity as an Image of and Invitation to Psyche, through a Case of Dissociative Identity Disorder
<p>This project sought to narrate a process of working with and learning from DID, through the researcher’s case study description of her work with a patient experiencing dissociative identity disorder (DID). The researcher focused on unique ways in which dissociation and multiplicity impacted the …
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AN OBSERVATIONAL STUDY OF LOW-MASS STAR FORMATION IN NGC 2264
… members permits an evaluation of the bolometric luminosities of these stars; the unreddened (V - R) and (V - I) colors yield effective temperatures. The theoretical mass tracks and isochrones of Cohen and Kuhi (1979) are adopted and extrapolated to lower luminosities and temperatures. The effects …
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Improvement of muon identification algorithms and perspectives on the D0 → μ+μ− search
… of the muon detectors to the current data taking luminosities and energies. This could be no more the optimum choice at upgrade luminosities, since the high particle fluxes will lead to a muon identification performance degradation and to a decrease of the muon detection efficiencies. In …
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Comportamento in vitro de Chalara paradoxa sob diferentes condições de cultivo
… such as culture media, temperatures and luminosities, which are key factors in determining the behavior of the pathogen. Therefore, the objective of this work was to evaluate the in vitro behavior of C. paradoxa in different growing conditions, mycelial growth, sporulation and germination …
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Estimating the stellar masses of NLS1 galaxies using multifrequency data
… work estimated star formation rates (SFR), AGN luminosities, radio luminosities and Eddington ratios for the sample. The average SFR was approximately 25 M_⊙/yr and strong correlations were found between SFR and radio luminosity (Spearman correlation of 0.91–0.92), supporting the interpretation …
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The measurement and analysis of flux variations in Seyfert galaxy nuclei
Seyfert galaxies have compact nuclei with luminosities only surpassed by quasars, to which they are believed to be related. The most common interpretation of these objects is that their central power source is a black hole with matter accreting towards it. An understanding of these powerful energy …
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Towards a complete census of active galactic nuclei in the nearby Universe
… and mid-IR constraints to calculate bolometric luminosities of these D<15 Mpc AGNs and combine these luminosities with well-constrained SMBH masses to estimate relative mass accretion rates. We use these data to calculate the volume-average SMBH growth rate of galaxies in the local Universe and …
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Testing and improving the luminosity relations for Gamma-Ray Bursts
… with spectroscopic redshifts and hence the known luminosities. GRBs have thus become known as a type of "standard candle"; where standard candle is meant in the usual sense that their luminosities can be derived from measurable properties of the bursts. GRBs can therefore be used for the same …
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The Development of the ATLAS SCT as a Luminometer and the Search for SUSY Decays with Compressed Mass Spectra
… at increasingly high center-of-mass energies and luminosities, the LHC at CERN being the latest to continue this legacy. This thesis covers both the enhancement of luminosity measurements of pp collisions at ATLAS, underpinning the accuracy of all measurements made by the detector, and a search …
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Obtaining the spacetime metric from cosmological observations
… cone, consisting of galaxy redshifts, apparent luminosities, angular diameters and number densities, together with chosen source evolution functions, viz absolute luminosities, true diameters and masses of sources; and applying the algorithm in [43], a set of Lemaître-Tolman-Bondi (LTB) …
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The Environments of Active Galactic Nuclei
… have enabled the reliable determination of the luminosities, scale lengths and even morphological type of the majority of the host galaxies. In fact tests of the repeatability of the galaxy model fitting with increasing nuclear:host ratio indicate that, with ground-based seeing, it is only at …
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Optical variability of radio-luminous palomar-green quasars
… We assume our QSO cores have high radio luminosities because they have a jet of relativistic material aligned close to our line-of-sight; we would then expect to see more variability than in a sample of radio-quiet QSOs if the shock in the jet is the cause of variability. There is …
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Galaxy Formation in the Lambda-Cold Dark Matter Cosmology
… which are predicted to be too large for low luminosities and too small for high luminosities compared to SDSS. I tested the impact on the model predictions of varying the prescriptions for supernova feedback, disk instabilities and galaxy mergers. In the second part of the thesis I explore …
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Use of Active Target Detectors in Nuclear Astrophysics: Nucleosynthesis of Fluorine and Fusion of Neon
… low-energy heavy ion experiments can have ion luminosities on the order of 10^5-10^7 particles per second for stable beams. With radioactive beams, this can be as much as two or three orders of magnitude lower. Thick target approaches can suffer from decreased energy resolution. Active target …
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Open clusters and HII regions of our Galaxy
… constraints to be placed on stellar ages and luminosities. As distance indicators they are also important tracers of star formation in the Milky Way. One such cluster is Trumpler 27 that we identified for detailed study.The aim of the study is to estimate the distance, radial velocity, age, …
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Starbursts in the UV bright interacting galaxies NGC 3395 and NGC 3396
… . There are no significant differences in the luminosities, sizes, masses and ages of the knots in the two galaxies. The knots in NGC 3395 are scattered throughout. There seems to be no correlation between age and position. The knots in NGC 3396 tend to be younger toward the center and older …
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X-ray properties of early-type galaxies
… We have compiled the largest catalogue of X–ray luminosities to date, and use it to examine the relationships between X–ray luminosity and galaxy age, environment and optical luminosity. It is shown that the mass of the X–ray halo increases with galaxy age, and that there is no trend in LX/LBwith …
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Spatial and spectral comparisons of soft X-rays from galaxies of different morphological types
… (the VSC) in ellipticals with the faintest X-ray luminosities (lowest Lx/Lp). We present composite spectra for spirals, SOs and galaxies experiencing environmental encounters. Each spectrum reveals distinct combinations of the aforementioned components. We present statistical analysis of …
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Ion Bunch Formation Strategies for the JLEIC Collider
… in the United States, with very high design luminosities of 10<sup>33</sup> − 10<sup>34</sup> cm<sup>−2</sup> s<sup>−1</sup>. The Jefferson Lab EIC concept, JLEIC, includes construction of a new ion beam accelerator complex. To achieve the required luminosity, the JLEIC ion collider requires …
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The role of obscured activity in galaxy formation
… If this is the case they each have far-infrared luminosities of ~5x10^11 solar luminosities and star-formation rates (SFRs) of ~50 solar masses per year -- a significant fraction of the combined SFR of the cluster. I next consider 126 SMGs detected in an 870-um survey of the Extended Chandra Deep …
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