Photon-Graviton Recycling as Cause of Gravitation
... As already discussed, the cosmological redshift of light is assumed to be due to an interaction between photons and gravitons, the latter being associated with the other masses along the photon trajectory. In this process, all photons, including RWBR photons, are attenuated in their passage through ...
... As already discussed, the cosmological redshift of light is assumed to be due to an interaction between photons and gravitons, the latter being associated with the other masses along the photon trajectory. In this process, all photons, including RWBR photons, are attenuated in their passage through ...
The Physical Nature of Cosmic Accretion of Baryons and Dark Matter
... our assumed mass profile inside the halo. For example, using an isothermal profile instead of NFW gives results that are consistent at the ∼ 10% level. Figure 2 shows the predicted values of the enclosed overdensity. Throughout this paper, we define overdensities relative to the mean matter density, ...
... our assumed mass profile inside the halo. For example, using an isothermal profile instead of NFW gives results that are consistent at the ∼ 10% level. Figure 2 shows the predicted values of the enclosed overdensity. Throughout this paper, we define overdensities relative to the mean matter density, ...
The Theory of Everything: The Origin and Fate of the Universe
... Newton went on to show that, according to his law, gravity causes the moon to move in an elliptical orbit around the Earth and causes the Earth and the planets to follow elliptical paths around the sun. The Copernican model got rid of Ptolemy’s celestial spheres, and with them the idea that the univ ...
... Newton went on to show that, according to his law, gravity causes the moon to move in an elliptical orbit around the Earth and causes the Earth and the planets to follow elliptical paths around the sun. The Copernican model got rid of Ptolemy’s celestial spheres, and with them the idea that the univ ...
Document
... from us very quickly. This effect is seen to a greater extent in galaxies that are _______ away from us. This indicates that the further away the galaxy is, the ______ it is moving. This evidence seems to suggest that everything in the universe is moving away from a single point, and that this proce ...
... from us very quickly. This effect is seen to a greater extent in galaxies that are _______ away from us. This indicates that the further away the galaxy is, the ______ it is moving. This evidence seems to suggest that everything in the universe is moving away from a single point, and that this proce ...
P1 The Earth in the Universe
... from us very quickly. This effect is seen to a greater extent in galaxies that are _______ away from us. This indicates that the further away the galaxy is, the ______ it is moving. This evidence seems to suggest that everything in the universe is moving away from a single point, and that this proce ...
... from us very quickly. This effect is seen to a greater extent in galaxies that are _______ away from us. This indicates that the further away the galaxy is, the ______ it is moving. This evidence seems to suggest that everything in the universe is moving away from a single point, and that this proce ...
Why Can`t We See God - A scientific explanation
... indicate that this may indeed be the case. The Big Bang Our braneworld was created about 13.7 billion years ago. It started with an extremely dense and hot state. In a tiny fraction of a second after its birth, our braneworld went through an inflation period (from 10−35 to 10−34 seconds) -- its size ...
... indicate that this may indeed be the case. The Big Bang Our braneworld was created about 13.7 billion years ago. It started with an extremely dense and hot state. In a tiny fraction of a second after its birth, our braneworld went through an inflation period (from 10−35 to 10−34 seconds) -- its size ...
MOND
... without the need for dark matter. The main objective of this proposal is to perform fully selfconsistent cosmological simulations of the formation and evolution of structures in the Universe under the influence of this alternative theory. Despite the remarkable success of the concordance cosmologica ...
... without the need for dark matter. The main objective of this proposal is to perform fully selfconsistent cosmological simulations of the formation and evolution of structures in the Universe under the influence of this alternative theory. Despite the remarkable success of the concordance cosmologica ...
CHAPTER 4 THE SPATIAL DISTRIBUTION OF GALAXIES 4.13
... Universe seems to resemble a three-dimensional network in which regions of high galaxy density are connected by filaments and sheets. These structures surround large voids in which very few galaxies are found. This appears to describe the current distribution of galaxies up to the largest observable ...
... Universe seems to resemble a three-dimensional network in which regions of high galaxy density are connected by filaments and sheets. These structures surround large voids in which very few galaxies are found. This appears to describe the current distribution of galaxies up to the largest observable ...
WORMHOLES AND SCIENCE FICTION According to the
... “The story that unfolded in the previous chapter was fantastic! One began with the innocuous looking Schwarzschild line element which was derived originally as the external field of a static star. One asked what happens if the star is absent, i.e., one probed the nature of the Schwarzschild geometry ...
... “The story that unfolded in the previous chapter was fantastic! One began with the innocuous looking Schwarzschild line element which was derived originally as the external field of a static star. One asked what happens if the star is absent, i.e., one probed the nature of the Schwarzschild geometry ...
cosmo_01_overview - Mullard Space Science Laboratory
... What is to be covered in the course: • Galaxies: – what they are, the different types, clustering – high redshift quasars, giant starbursts and evolution ...
... What is to be covered in the course: • Galaxies: – what they are, the different types, clustering – high redshift quasars, giant starbursts and evolution ...
Title
... Black holes A black hole is a body so massive and dense that speeds above that of light would be needed to escape from it. Thus even light is forever trapped inside it Black holes in active galactic nuclei have masses of up to 1 billion solar masses ...
... Black holes A black hole is a body so massive and dense that speeds above that of light would be needed to escape from it. Thus even light is forever trapped inside it Black holes in active galactic nuclei have masses of up to 1 billion solar masses ...
M. Meixner
... resolving power to analyze the mass-loss return from stars to galaxies in the Local Volume of galaxies. For example, color magnitude diagrams from photometric imaging with NIRCam and MIRI can be used to identify dusty evolved stars which can then be compared to precomputed models such as GRAMS to de ...
... resolving power to analyze the mass-loss return from stars to galaxies in the Local Volume of galaxies. For example, color magnitude diagrams from photometric imaging with NIRCam and MIRI can be used to identify dusty evolved stars which can then be compared to precomputed models such as GRAMS to de ...
PART II: Life of a Star
... The Milky Way Metal-poor Stars • Early finding: Stars in the Milky Way don't all have the same composition → complex history of Galaxy. This revelation spawned numerous branches of Astrophysics. • Metal-poor stars in particular can provide constraints on: • Big Bang Nucleosynthesis (eg. 7Li in Halo ...
... The Milky Way Metal-poor Stars • Early finding: Stars in the Milky Way don't all have the same composition → complex history of Galaxy. This revelation spawned numerous branches of Astrophysics. • Metal-poor stars in particular can provide constraints on: • Big Bang Nucleosynthesis (eg. 7Li in Halo ...
transparencies
... Panel’s report not yet written; will be at SLAC next week for PEP-II; but they seem to be heading towards something like this: – It is too early to judge the physics and the luminosity promise of the Tevatron. – Similarly, too early to judge the LHC schedule. – Recommend to review the program again ...
... Panel’s report not yet written; will be at SLAC next week for PEP-II; but they seem to be heading towards something like this: – It is too early to judge the physics and the luminosity promise of the Tevatron. – Similarly, too early to judge the LHC schedule. – Recommend to review the program again ...
The Fate of Inflaton Fluctuations in Multi
... believed to be the origin of the large scale structure in the Universe [1]. Understanding them is an important aspect of early Universe cosmology. Flat directions are directions in field space where the potential is constant. In this situation, the field can vary at no cost in energy and may acquir ...
... believed to be the origin of the large scale structure in the Universe [1]. Understanding them is an important aspect of early Universe cosmology. Flat directions are directions in field space where the potential is constant. In this situation, the field can vary at no cost in energy and may acquir ...
Test 4 Review Clicker Questions
... The Doppler shifts of 21-cm radiation from hydrogen in the spiral arms provides astronomers with a tool to map out the Galaxy’s structure. Copyright © 2010 Pearson Education, Inc. ...
... The Doppler shifts of 21-cm radiation from hydrogen in the spiral arms provides astronomers with a tool to map out the Galaxy’s structure. Copyright © 2010 Pearson Education, Inc. ...
Radio Telescopes Consolidation Activity
... 5. Hubble observed that all distant galaxies show a redshift, which shows galaxies are moving further apart. Since the most distant galaxies appear to be travelling the quickest, this suggests that space is expanding between galaxies and that the universe is expanding. 6. d = v / H0. Any answer cons ...
... 5. Hubble observed that all distant galaxies show a redshift, which shows galaxies are moving further apart. Since the most distant galaxies appear to be travelling the quickest, this suggests that space is expanding between galaxies and that the universe is expanding. 6. d = v / H0. Any answer cons ...
Hubble`s Law and the Expansion Rate of the Universe
... graph, although there may be one that is just off the top of the scale. 6. The Hubble constant is equal to the slope of the line through your points on the graph you just did. Draw a “best fit” line through your data to estimate the Hubble constant. Your line should go through the origin (0,0). You ...
... graph, although there may be one that is just off the top of the scale. 6. The Hubble constant is equal to the slope of the line through your points on the graph you just did. Draw a “best fit” line through your data to estimate the Hubble constant. Your line should go through the origin (0,0). You ...
Intelligent Life in the Universe
... Uncertainties! Important - each term in the Drake equation (probably) gets more uncertain when proceeding from left to right. For lack of a better example we have adopted an Earth/human bias when estimating various terms. We do not know the uncertainties. ...
... Uncertainties! Important - each term in the Drake equation (probably) gets more uncertain when proceeding from left to right. For lack of a better example we have adopted an Earth/human bias when estimating various terms. We do not know the uncertainties. ...
Interference of dark matter solitons and galactic offsets
... conditions, the cosmological evolution of the axion field can be computed deterministically in the semiclassical description of Eq. (1) [13]. In practice, uncertainties in the initial conditions and the evolution imply that the relative phase for a particular collision can actually be considered as ...
... conditions, the cosmological evolution of the axion field can be computed deterministically in the semiclassical description of Eq. (1) [13]. In practice, uncertainties in the initial conditions and the evolution imply that the relative phase for a particular collision can actually be considered as ...
Gravity - faculty.ucmerced.edu
... If you do it right using the correct theory of gravity, you find exactly the same answer! This was shown by Karl Schwarzschild not long after Einstein discovered General ...
... If you do it right using the correct theory of gravity, you find exactly the same answer! This was shown by Karl Schwarzschild not long after Einstein discovered General ...
Dark Matter NS Warsaw
... galaxies hints towards a single rare event. ▸ r-process abundance should correlate with metallicity if SNe are responsible. ...
... galaxies hints towards a single rare event. ▸ r-process abundance should correlate with metallicity if SNe are responsible. ...
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.