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Full-Text Articles in Physical Processes
Galactic Open Clusters, Ted Von Hippel
Galactic Open Clusters, Ted Von Hippel
Publications
The study of open clusters has a classic feel to it since the subject predates anyone alive today. Despite the age of this topic, I show via an ADS search that its relevance and importance in astronomy has grown faster in the last few decades than astronomy in general. This is surely due to both technical reasons and the interconnection of the field of stellar evolution to many branches of astronomy. In this review, I outline what we know today about open clusters and what they have taught us about a range of topics from stellar evolution to Galactic structure …
Ultrarelativistic Plasma Shell Collisions In Γ‐Ray Burst Sources: Dimensional Effects On The Final Steady State Magnetic Field, C. H. Jaroschek, H. Lesch, R. A. Treumann
Ultrarelativistic Plasma Shell Collisions In Γ‐Ray Burst Sources: Dimensional Effects On The Final Steady State Magnetic Field, C. H. Jaroschek, H. Lesch, R. A. Treumann
Dartmouth Scholarship
Ultrarelativistic electron-positron plasma shell collisions as an integral part of generic γ-ray burst (GRB) fireball models are studied in the framework of self-consistent three-dimensional particle-in-cell simulations. We compare scenarios at moderately relativistic (γ0 10) and ultrarelativistic (γ0 100) energies that directly correspond to the regimes of internal and external shell collisions, respectively, in GRB synchrotron emission models. Simulated systems comprise 5 × 108 particles, applying a relativistic, fully electromagnetic, massively parallelized code. It is found that Weibel-generated, steady state magnetic equipartition ratios in external collisions reach up to B ~ 12%, exceeding the respective internal ratios by …
Today's Take On Einstein’S Relativity: Proceedings Of The Conference Of 18 Feb 2005, Florentin Smarandache, Homer B. Tilton
Today's Take On Einstein’S Relativity: Proceedings Of The Conference Of 18 Feb 2005, Florentin Smarandache, Homer B. Tilton
Branch Mathematics and Statistics Faculty and Staff Publications
Non Sequiturs in Relativity Four in number at this point Dr. Smith of "Lost in Space" had a knack of easing out of binds that he'd gotten himself into. Dr. Einstein was a little like that. Einstein originally declared that the distortions of special relativity reflect real changes to the objects being remotely observed, then reconsidered. The first non sequitur is quoted here from Sachs:[1] In a lecture that Einstein gave to the Prussian Academy of Sciences in 1921, he said the following: "Geometry predicates nothing about relations of real things, but only geometry together with the purport of physical …