Littérature scientifique sur le sujet « Spherical collapse model »
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Articles de revues sur le sujet "Spherical collapse model"
DEL POPOLO, ANTONINO. « IMPROVEMENTS TO THE SPHERICAL COLLAPSE MODEL ». International Journal of Modern Physics D 15, no 07 (juillet 2006) : 1067–88. http://dx.doi.org/10.1142/s0218271806008553.
Texte intégralTaddei, Laura. « Spherical Collapse in the Symmetron Model ». Journal of Physics : Conference Series 470 (6 décembre 2013) : 012006. http://dx.doi.org/10.1088/1742-6596/470/1/012006.
Texte intégralGOVENDER, M., K. S. GOVINDER, S. D. MAHARAJ, R. SHARMA, S. MUKHERJEE et T. K. DEY. « RADIATING SPHERICAL COLLAPSE WITH HEAT FLOW ». International Journal of Modern Physics D 12, no 04 (avril 2003) : 667–76. http://dx.doi.org/10.1142/s0218271803003086.
Texte intégralDel Popolo, Antonino, et Morgan Le Delliou. « Splashback Radius in a Spherical Collapse Model ». Universe 8, no 9 (6 septembre 2022) : 462. http://dx.doi.org/10.3390/universe8090462.
Texte intégralDel Popolo, A. « Some improvements to the spherical collapse model ». Astronomy & ; Astrophysics 454, no 1 (juillet 2006) : 17–26. http://dx.doi.org/10.1051/0004-6361:20054441.
Texte intégralCupani, Guido, Marino Mezzetti et Fabio Mardirossian. « Angular momentum in cluster Spherical Collapse Model ». Monthly Notices of the Royal Astronomical Society 417, no 4 (6 octobre 2011) : 2554–61. http://dx.doi.org/10.1111/j.1365-2966.2011.19419.x.
Texte intégralLee, Seokcheon. « Spherical collapse model with and without curvature ». Physics Letters B 685, no 2-3 (mars 2010) : 110–14. http://dx.doi.org/10.1016/j.physletb.2010.01.058.
Texte intégralSanchez-Conde, M. A., J. Betancort-Rijo et F. Prada. « The spherical collapse model with shell-crossing ». Monthly Notices of the Royal Astronomical Society 378, no 1 (11 juin 2007) : 339–52. http://dx.doi.org/10.1111/j.1365-2966.2007.11798.x.
Texte intégralDEL POPOLO, A., F. PACE et J. A. S. LIMA. « EXTENDED SPHERICAL COLLAPSE AND THE ACCELERATING UNIVERSE ». International Journal of Modern Physics D 22, no 08 (21 juin 2013) : 1350038. http://dx.doi.org/10.1142/s0218271813500387.
Texte intégralMohanty, Sujata, et Rajesh Gopal. « Analysis of cosmological bias within spherical collapse model ». EUREKA : Physics and Engineering, no 5 (30 septembre 2022) : 3–11. http://dx.doi.org/10.21303/2461-4262.2022.002429.
Texte intégralThèses sur le sujet "Spherical collapse model"
Reyes, Juan Daniel Bojowald Martin. « Spherically symmetric loop quantum gravity connections to two-dimensional models and applications to gravitational collapse / ». [University Park, Pa.] : Pennsylvania State University, 2009. http://etda.libraries.psu.edu/theses/approved/WorldWideIndex/ETD-4758/index.html.
Texte intégralCupani, Guido. « Non equilibrium dynamics of galaxy clusters ». Doctoral thesis, Università degli studi di Trieste, 2009. http://hdl.handle.net/10077/3065.
Texte intégralThe thesis is focused on the dynamics of galaxies in the outskirts of galaxy clusters, where the matter is affected by an overall infall motion towards the cluster centre. Starting from the classical results of the spherical collapse model, we determined new theoretical constraints for the mass profile of clusters as a function of the cosmological parameters. We investigated the importance of the turnaround radius (i.e. the radius where the infall motion counterbalances the Hubble expansion motion) as well as the possibility of directly extracting the mass profile from the infall velocity pattern of member galaxies. The theoretical results were applied to a sample of simulated clusters (Borgani et al. 2004, Biviano et al. 2006) to keep the 3-dimensional dynamics under control. We demonstrated that: (1) most clusters are compatible with a single mass profile in the external region (provided their size and mass are normalized to the turnaround scale); (2) it is possible to extract the individual mass profiles of clusters using a selected subset of galaxies identified on their redshift-position distribution; (3) the Jeans equation and the virial theorem must be corrected in the outskirts of clusters to take into account the overall infall motion of matter. Taking advantage of these results, we developed a new technique for estimating the mass profile in cluster outskirts which only relies on the observational properties of member galaxies. This technique turns out to be simpler and more reliable than the current methods and is suitable to be applied to observations.
La tesi è incentrata sulla dinamica delle galassie nelle periferie degli ammassi di galassie, dove la materia è interessata da un moto complessivo di caduta verso il centro dell'ammasso. A partire dai risultati classici del modello di collasso sferico, abbiamo determinato dei nuovi vincoli teorici al profilo di massa degli ammassi in funzione dei parametri cosmologici. Abbiamo analizzato l'importanza del raggio di "turnaround" (ossia il raggio dove il moto di caduta è controblanciato dal moto di espansione di Hubble) e la possibilità di estrarre il profilo di massa direttamente dalla velocità di caduta delle galassie. Abbiamo poi applicato questi risultati teorici a un campione di ammassi simulati (Borgani et al. 2004, Biviano et al. 2006) per tenere sotto controllo la dinamica in tre dimensioni. Con quest'analisi, siamo stati in grado di dimostrare che: (1) la quasi totalità degli ammassi è compatibile con un unico profilo di massa nelle regioni esterne (purché le loro dimensioni e masse siano riscalate rispetto al raggio di turnaround); (2) è possibile estrarre il profilo individuale di un ammasso utilizzando un ristretto sottoinsieme di galassie, identificate dalla distribuzione dei loro redshift e delle loro posizioni; (3) l'equazione di Jeans e il teorema del viriale devono essere corretti nelle periferie degli ammassi in modo da tener conto del moto di caduta della materia. Grazie a questi risultati, abbiamo sviluppato una nuova tecnica per stimare il profilo di massa nelle zone esterne, basata unicamente sulle proprietà osservative delle galassie. Questa tecnica risulta essere più semplice e affidabile degli altri metodi attualmente utilizzati ed è adatta ad essere applicata alle osservazioni.
XXI Ciclo
1981
Jian, Jia-Hung, et 簡嘉宏. « Spherical Collapse Model( Cosmological N-Body Simulation with Cold Dark Matter and Hot Plasma Gas ) ». Thesis, 2000. http://ndltd.ncl.edu.tw/handle/95183576032706860748.
Texte intégralWaizmann, Jean-Claude [Verfasser]. « On finding galaxy clusters with Planck and the spherical collapse model in different Dark Energy cosmologies / put forward by Jean-Claude Waizmann ». 2010. http://d-nb.info/1009399861/34.
Texte intégralChang, Chia-Chun, et 張嘉君. « Spherical Collapse Models with Clustered Dark Energy ». Thesis, 2018. http://ndltd.ncl.edu.tw/handle/7m9222.
Texte intégral國立臺灣師範大學
物理學系
106
We use the spherical collapse model to investigate the clustering effect of dark energy (DE) in the structure formation of galaxy clusters. For the fully clustered DE, we treat the overdense region as an isolated system and the total energy of matter and DE conserves inside the spherical region. Under this circumstance, we introduce a parameter r to characterize the degree of DE clustering, defined by the nonlinear density contrast ratio of DE to matter at the turnaround epoch, and thus we are able to determine the process of the spherical collapse and obtain the virialized nonlinear overdensity ∆ vir by the virial theorem. The current observational data on galaxy clusters suggests 0.5 < r < 0.8 for the clustered DE with w < −0.9 at 1σ level. In addition, we utilize the linear perturbation theory to deal with the evolution of DE perturbation at the early time and calculate the related physical quantities. We compare the two methods and find both results consistent with each other while our method introducing a new parameter is simpler and more straightforward without considering the initial DE perturbation and its evolution at the early time.
Livres sur le sujet "Spherical collapse model"
Deruelle, Nathalie, et Jean-Philippe Uzan. Newtonian cosmology. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198786399.003.0016.
Texte intégralChapitres de livres sur le sujet "Spherical collapse model"
Umeda, Hideyuki, et Takashi Yoshida. « Nucleosynthesis in Spherical Explosion Models of Core Collapse Supernovae ». Dans Handbook of Supernovae, 1–18. Cham : Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-20794-0_76-1.
Texte intégralUmeda, Hideyuki, et Takashi Yoshida. « Nucleosynthesis in Spherical Explosion Models of Core-Collapse Supernovae ». Dans Handbook of Supernovae, 1753–70. Cham : Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-21846-5_76.
Texte intégralAbbasi, Afaq Ahmed, Michele Viviani, Daniele Bertetta, Marina Delucchi, Rico Ricotti et Giorgio Tani. « Experimental Analysis of Cavitation Erosion on Blade Root of Controllable Pitch Propeller ». Dans Progress in Marine Science and Technology. IOS Press, 2022. http://dx.doi.org/10.3233/pmst220032.
Texte intégralZhao, T., G. T. Houlsby et S. Utili. « Numerical Simulation of the Collapse of Granular Columns Using DEM ». Dans Discrete Element Modelling of Particulate Media, 133–40. The Royal Society of Chemistry, 2012. http://dx.doi.org/10.1039/bk9781849733601-00133.
Texte intégralActes de conférences sur le sujet "Spherical collapse model"
LOKAS, E. L., et y. HOFFMAN. « THE SPHERICAL COLLAPSE MODEL IN A UNIVERSE WITH COSMOLOGICAL CONSTANT ». Dans Proceedings of the Third International Workshop. WORLD SCIENTIFIC, 2001. http://dx.doi.org/10.1142/9789812811363_0012.
Texte intégralHasan, Mainul. « Dynamics of a Micro-Bubble Between Two Spherical Particles ». Dans ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-37053.
Texte intégralChahine, Georges. « A Numerical Model for Three-Dimensional Bubble Dynamics in Complex Flow Configurations ». Dans SNAME 22nd American Towing Tank Conference. SNAME, 1989. http://dx.doi.org/10.5957/attc-1989-008.
Texte intégralKrishnan, Gopi, et Kamran Mohseni. « On the Modelling of a Synthetic Jet as a Spherical Jet ». Dans ASME/JSME 2007 5th Joint Fluids Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/fedsm2007-37306.
Texte intégralAlhelfi, Ali, et Bengt Sunden. « The Boundary Integral Method Applied to Non-Spherical Cavitation Bubble Growth and Collapse Close to a Rigid Boundary ». Dans ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-51687.
Texte intégralMa, Jingsen, Chao-Tsung Hsiao et Georges L. Chahine. « Euler-Lagrange Simulations of Bubble Cloud Dynamics Near a Wall ». Dans ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-65191.
Texte intégralGhosh, Koushik, Achintya Mukhopadhyay, Swarnendu Sen et Dipankar Sanyal. « An Integral Approach for Predicting Vapour Film Collapse and Growth Around a Hot Sphere in Subcooled Water ». Dans ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-16261.
Texte intégralAlnaimat, Fadi, Omar Alhammadi et Bobby Mathew. « Condensation Heat Transfer Model : A Comparison Study of Condensation Rate Between a Single Bubble and Multiple Rising Bubbles ». Dans ASME 2021 Heat Transfer Summer Conference collocated with the ASME 2021 15th International Conference on Energy Sustainability. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/ht2021-63593.
Texte intégralMostafa, Khaled, et Ahmed Alian. « Level 3 Fitness for Service Assessment of Dented Pipes With Diameter Less Than 6.25 Inch ». Dans ASME 2022 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/pvp2022-84935.
Texte intégralWang, Ruimin, Fengde Zong et Yang Yang. « Influence of Parametric Resonance on a Bubble Driven by Intensive Sound During Stable Cavitation ». Dans ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-68610.
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