DSSU, the Non-Expanding Universe: Structure, Redshift, Distance
... portion of the universe with luminous ‘sawdust’ of galaxies. Recall the lab example, a dynamic mechanism prevented the sawdust on the surface of the liquid from migrating to the perimeter of the pan. Similarly, a dynamic action prevents galaxies from drifting (the proper term is comoving) into the d ...
... portion of the universe with luminous ‘sawdust’ of galaxies. Recall the lab example, a dynamic mechanism prevented the sawdust on the surface of the liquid from migrating to the perimeter of the pan. Similarly, a dynamic action prevents galaxies from drifting (the proper term is comoving) into the d ...
The First Stars in the Universe
... none of the simulations has yet revealed any tendency for the clumps to fragment. This agrees with our understanding of present-day star formation; observations and simulations show that the fragmentation of star-forming clumps is typically limited to the formation of binary systems (two stars orbit ...
... none of the simulations has yet revealed any tendency for the clumps to fragment. This agrees with our understanding of present-day star formation; observations and simulations show that the fragmentation of star-forming clumps is typically limited to the formation of binary systems (two stars orbit ...
Neutrino hot dark matter and hydrodynamics of structure formation
... • Lynden Bell: violent relaxation, faster than collisional • Relaxation in time-dependent potential: every object (individual particle, galaxy) exchanges energy with the whole cluster • Iff phase space density becomes uniform, then Fermi-Dirac distribution • X-ray radiation helps to maintain the vir ...
... • Lynden Bell: violent relaxation, faster than collisional • Relaxation in time-dependent potential: every object (individual particle, galaxy) exchanges energy with the whole cluster • Iff phase space density becomes uniform, then Fermi-Dirac distribution • X-ray radiation helps to maintain the vir ...
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... and dust, and dark matter. Some include multiple star systems, clusters, and interstellar clouds. Galaxies are bound by gravity and contain millions to trillions of stars. The size of some galaxies are measured in units called parsecs, while others are measu ...
... and dust, and dark matter. Some include multiple star systems, clusters, and interstellar clouds. Galaxies are bound by gravity and contain millions to trillions of stars. The size of some galaxies are measured in units called parsecs, while others are measu ...
Recent versions of the Design Argument
... of the Big Bang been slightly bigger or slightly weaker, then the galaxies would not have been formed and the earth would not have developed. Had there been even a slight variance in the basic elements emerging from the Big Bang we would not be here today. ...
... of the Big Bang been slightly bigger or slightly weaker, then the galaxies would not have been formed and the earth would not have developed. Had there been even a slight variance in the basic elements emerging from the Big Bang we would not be here today. ...
The formation and evolution of galaxies
... •Typical stellar lifetime is a few billion years • So there has been little evolution between the epoch of the Coma cluster and today ...
... •Typical stellar lifetime is a few billion years • So there has been little evolution between the epoch of the Coma cluster and today ...
Intelligent life in cosmology
... intelligent species, if the universe were closed and always decelerating – intelligent life would be forced by the laws of physics to use resources at just the right rate to survive to the very end of time. And even more intelligent species could so survive if the universe were to have a period of a ...
... intelligent species, if the universe were closed and always decelerating – intelligent life would be forced by the laws of physics to use resources at just the right rate to survive to the very end of time. And even more intelligent species could so survive if the universe were to have a period of a ...
Scale-invariant theory of gravitation
... The following are usual steps in constructing and studying the cosmological models in any theory of gravitation: Choosing the space-time metric. Taking the physical source for gravity. Deriving gravitational field equations of the theory under ...
... The following are usual steps in constructing and studying the cosmological models in any theory of gravitation: Choosing the space-time metric. Taking the physical source for gravity. Deriving gravitational field equations of the theory under ...
Astronomy 1
... outer space, especially the positions, dimensions, distribution, motion, composition, energy, and evolution of celestial bodies and phenomena. ...
... outer space, especially the positions, dimensions, distribution, motion, composition, energy, and evolution of celestial bodies and phenomena. ...
GALAXIES Reading Comprehension
... and dark matter. Some include multiple star systems, clusters, and interstellar clouds. Galaxies are bound by gravity and contain from millions to trillions of stars. The size of some galaxies are measured in units called parsecs, others are measured in ligh ...
... and dark matter. Some include multiple star systems, clusters, and interstellar clouds. Galaxies are bound by gravity and contain from millions to trillions of stars. The size of some galaxies are measured in units called parsecs, others are measured in ligh ...
Superconducting Detectors: Sensitivity Over Ten Orders of Magnitude
... What is dark matter? What is dark energy? Where is the “missing” half of ordinary matter? What is the mass of the neutrino? What is the nature of the Big Bang? What is inflation? Is it associated with Grand Unification? How do stars and galaxies form? Is our understanding of quantum mechanics corr ...
... What is dark matter? What is dark energy? Where is the “missing” half of ordinary matter? What is the mass of the neutrino? What is the nature of the Big Bang? What is inflation? Is it associated with Grand Unification? How do stars and galaxies form? Is our understanding of quantum mechanics corr ...
Science and Beauty Take up
... Para. 5 - agrees that the night sky is beautiful (scene in poem) and says he also has gone out to just enjoy its beauty. Para. 6 states he knows that the beauty he sees isn’t all the beauty there is to see (thesis) which ...
... Para. 5 - agrees that the night sky is beautiful (scene in poem) and says he also has gone out to just enjoy its beauty. Para. 6 states he knows that the beauty he sees isn’t all the beauty there is to see (thesis) which ...
A. Big Bang Theory: A Failure from the Beginning
... abundances of the lightest elements: hydrogen, deuterium, and helium ... Detailed calculations predicted that the present Universe should contain about 75% of its mass in the form of hydrogen and 25% as helium-4 with about one part in a million ending up in the form of all the other elements. ... Th ...
... abundances of the lightest elements: hydrogen, deuterium, and helium ... Detailed calculations predicted that the present Universe should contain about 75% of its mass in the form of hydrogen and 25% as helium-4 with about one part in a million ending up in the form of all the other elements. ... Th ...
PDF sample - Northern Central Hospital
... the first time, the reality of the previously hidden atomic world was beginning to make itself manifest. It is difficult today to fully appreciate how recent is the notion that atoms are real physical entities, and not mere mathematical or philosophical constructs. Even in 1906, scientists did not ...
... the first time, the reality of the previously hidden atomic world was beginning to make itself manifest. It is difficult today to fully appreciate how recent is the notion that atoms are real physical entities, and not mere mathematical or philosophical constructs. Even in 1906, scientists did not ...
Lecture 8
... when the temperature fell below the QCD energy scale (of the order of 100 MeV), and they would be created “cold”, i.e., with negligible kinetic energy, and they would never be in thermal interaction. Thus the axions have negligible velocities, and act like CDM. If these WIMPs or axions make up the C ...
... when the temperature fell below the QCD energy scale (of the order of 100 MeV), and they would be created “cold”, i.e., with negligible kinetic energy, and they would never be in thermal interaction. Thus the axions have negligible velocities, and act like CDM. If these WIMPs or axions make up the C ...
Anthropic Principle, Cosmomicrophysics and Biosphere
... properties, is characterized by the creation of the complex biological structures, accepting the “Universe pulse” in direct sense and being the Universal evolution observes from the physical and biological points of view. This role is played not only by man or humanity, as it was assumed earlier wit ...
... properties, is characterized by the creation of the complex biological structures, accepting the “Universe pulse” in direct sense and being the Universal evolution observes from the physical and biological points of view. This role is played not only by man or humanity, as it was assumed earlier wit ...
"Dark Matter in the Milky Way - how to find it using Gaia and other
... Dark Matter detection Particle physicists hope to find dark matter as it passes through the Earth (and their detector). How many particles should they expect to pass through per second? ...
... Dark Matter detection Particle physicists hope to find dark matter as it passes through the Earth (and their detector). How many particles should they expect to pass through per second? ...
Dark Matter in the Milky Way - how to find it using Gaia and other
... Dark Matter detection Particle physicists hope to find dark matter as it passes through the Earth (and their detector). How many particles should they expect to pass through per second? ...
... Dark Matter detection Particle physicists hope to find dark matter as it passes through the Earth (and their detector). How many particles should they expect to pass through per second? ...
English - Wise Observatory
... The ALFALFA survey detected 14 galaxies in a small region of the nearby Universe that are at about the same distance from us and whose optical images hint at their young age. The attention of the investigators was attracted by the appearance of the galaxies on the sky; they seemed to be arranged alo ...
... The ALFALFA survey detected 14 galaxies in a small region of the nearby Universe that are at about the same distance from us and whose optical images hint at their young age. The attention of the investigators was attracted by the appearance of the galaxies on the sky; they seemed to be arranged alo ...
Cosmic Microwave Background Anisotropies:
... •Curvature or dark energy can be only important in very late time for evolution of the Universe Since late time=larger horizon size, ISW affects Cl on very small l’s Late ISW •However, when the universe became matter domination from radiation domination, potential decayed! This epoch is near recombi ...
... •Curvature or dark energy can be only important in very late time for evolution of the Universe Since late time=larger horizon size, ISW affects Cl on very small l’s Late ISW •However, when the universe became matter domination from radiation domination, potential decayed! This epoch is near recombi ...
Slide 1
... Big Bang and Models of Cosmology 1. Lambda - CDM ( Cold Dark Matter ) It explains cosmic microwave background observations, as well as large scale structure observations and supernova observations of the accelerating expansion of the universe. Cold Dark Matter is explained as being cold its velocit ...
... Big Bang and Models of Cosmology 1. Lambda - CDM ( Cold Dark Matter ) It explains cosmic microwave background observations, as well as large scale structure observations and supernova observations of the accelerating expansion of the universe. Cold Dark Matter is explained as being cold its velocit ...
BML_V
... since dynamical equilibrium is established most quickly in the nuclear regions of an isothermal sphere composed of a single mass species, I contend that this circumstance points to the existence of active dynamical processes that are recruiting baryons to the central regions of every spiral galaxy a ...
... since dynamical equilibrium is established most quickly in the nuclear regions of an isothermal sphere composed of a single mass species, I contend that this circumstance points to the existence of active dynamical processes that are recruiting baryons to the central regions of every spiral galaxy a ...
P3A3B Particles and Quanta Notes 2013
... 3. The Strong Force - This force binds _____________and protons together in the _____________of atoms and is a _____________range force. Mediated by _____________ . 4. Weak Force - This causes Beta decay (the conversion of a neutron to a proton, an electron and an antineutrino) and various particles ...
... 3. The Strong Force - This force binds _____________and protons together in the _____________of atoms and is a _____________range force. Mediated by _____________ . 4. Weak Force - This causes Beta decay (the conversion of a neutron to a proton, an electron and an antineutrino) and various particles ...
Gravitational Lensing, SZ Effects, and Large
... * redshift distribution of source galaxies magnitude distribution redshift distribution photo-z measurement * intrinsic alignments of source galaxies shear-ellipticity correlation * Nonlinear power spectrum * observational systematics ...
... * redshift distribution of source galaxies magnitude distribution redshift distribution photo-z measurement * intrinsic alignments of source galaxies shear-ellipticity correlation * Nonlinear power spectrum * observational systematics ...
Big Bang
The Big Bang theory is the prevailing cosmological model for the universe from the earliest known periods through its subsequent large-scale evolution. The model accounts for the fact that the universe expanded from a very high density and high temperature state, and offers a comprehensive explanation for a broad range of observed phenomena, including the abundance of light elements, the cosmic microwave background, large scale structure, and Hubble's Law. If the known laws of physics are extrapolated beyond where they are valid, there is a singularity. Modern measurements place this moment at approximately 13.8 billion years ago, which is thus considered the age of the universe. After the initial expansion, the universe cooled sufficiently to allow the formation of subatomic particles, and later simple atoms. Giant clouds of these primordial elements later coalesced through gravity to form stars and galaxies.Since Georges Lemaître first noted, in 1927, that an expanding universe might be traced back in time to an originating single point, scientists have built on his idea of cosmic expansion. While the scientific community was once divided between supporters of two different expanding universe theories, the Big Bang and the Steady State theory, accumulated empirical evidence provides strong support for the former. In 1929, from analysis of galactic redshifts, Edwin Hubble concluded that galaxies are drifting apart, important observational evidence consistent with the hypothesis of an expanding universe. In 1965, the cosmic microwave background radiation was discovered, which was crucial evidence in favor of the Big Bang model, since that theory predicted the existence of background radiation throughout the universe before it was discovered. More recently, measurements of the redshifts of supernovae indicate that the expansion of the universe is accelerating, an observation attributed to dark energy's existence. The known physical laws of nature can be used to calculate the characteristics of the universe in detail back in time to an initial state of extreme density and temperature.