![Probing Gravity with Observations of the Cosmic Microwave Background Sarah Church Stanford University](http://s1.studyres.com/store/data/008539803_1-9b5b00c41c5239b2fd8679524024e701-300x300.png)
Probing Gravity with Observations of the Cosmic Microwave Background Sarah Church Stanford University
... the Cosmic Microwave Background (CMB) Dominates energy density of universe Temperature is isotropic to few parts in 105 ...
... the Cosmic Microwave Background (CMB) Dominates energy density of universe Temperature is isotropic to few parts in 105 ...
3. Cosmology and the Origin and Evolution of Galaxies
... challenge the accepted scenarios that describe our current understanding of the physical processes that drive the formation of structure in the universe, and control its subsequent evolution into the galaxies and clusters that we see today. Significant theoretical, experimental, and observational eff ...
... challenge the accepted scenarios that describe our current understanding of the physical processes that drive the formation of structure in the universe, and control its subsequent evolution into the galaxies and clusters that we see today. Significant theoretical, experimental, and observational eff ...
Astronomical and Physical Sciences
... according to the second law of thermodynamics, the energy in the universe available for useful work has always been decreasing. However, as one goes back in time, the energy available for useful work would eventually exceed the total energy in the universe, which, according to the first law of therm ...
... according to the second law of thermodynamics, the energy in the universe available for useful work has always been decreasing. However, as one goes back in time, the energy available for useful work would eventually exceed the total energy in the universe, which, according to the first law of therm ...
“Dark Physics” and Dipole Moments
... 1. Dark Matter & U(1)d Gauge Symmetry i) Underground Detection vs Positron & γ-ray Excesses *ii) (Very) Light Dark Matter (≤100MeV?) iii) Dark Bosons (Dark Photon(γd), Dark Z(Zd), U,.. 2. Kinetic U(1)Y x U(1)d Mixing ½ε/cosθWBµνDµν i) Δaµ=aµexp-aµSM= 276(80)x10-11 (3.5σ discrepancy!) Δae=aeexp-aeSM= ...
... 1. Dark Matter & U(1)d Gauge Symmetry i) Underground Detection vs Positron & γ-ray Excesses *ii) (Very) Light Dark Matter (≤100MeV?) iii) Dark Bosons (Dark Photon(γd), Dark Z(Zd), U,.. 2. Kinetic U(1)Y x U(1)d Mixing ½ε/cosθWBµνDµν i) Δaµ=aµexp-aµSM= 276(80)x10-11 (3.5σ discrepancy!) Δae=aeexp-aeSM= ...
A6 - Vicphysics
... For this point it is useful to provide example maps of a region of the night sky for a specific time in two versions; one with an altitude-azimuth coordinate system (alt-az), the other using the right ascension-declination system. Students can determine the location of one or more identified stars u ...
... For this point it is useful to provide example maps of a region of the night sky for a specific time in two versions; one with an altitude-azimuth coordinate system (alt-az), the other using the right ascension-declination system. Students can determine the location of one or more identified stars u ...
A Tale of Two Physics
... This begat a round of errors starting by misreading the nature of dark energy which then led physicists to grossly understate the age of the universe by linearly extrapolating the Hubble constant backwards from what we now know to be a curve that can exhibit accelerated acceleration as it does now. ...
... This begat a round of errors starting by misreading the nature of dark energy which then led physicists to grossly understate the age of the universe by linearly extrapolating the Hubble constant backwards from what we now know to be a curve that can exhibit accelerated acceleration as it does now. ...
Gestalting Structures in Physics
... methods. Copernicus’s new outlining of the solar system created a basis for a unified view of celestial observations and the laws of motion formulated in Newton’s Principia. Newton’s work meant the start of a new era in the development of natural sciences, the era characterized by mathematical physi ...
... methods. Copernicus’s new outlining of the solar system created a basis for a unified view of celestial observations and the laws of motion formulated in Newton’s Principia. Newton’s work meant the start of a new era in the development of natural sciences, the era characterized by mathematical physi ...
On early and late phases of acceleration of the
... scenario” of a decelerating expanding universe has been only a transitory phenomenon in the cosmic history. Even for this general presentation of my work, I will still define what I mean by “natural”: the idea is that gravity described by general relativity is attractive so tends attenuate the effec ...
... scenario” of a decelerating expanding universe has been only a transitory phenomenon in the cosmic history. Even for this general presentation of my work, I will still define what I mean by “natural”: the idea is that gravity described by general relativity is attractive so tends attenuate the effec ...
String theory to the rescue - KITP - University of California, Santa
... There is a danger of defining science too rigidly, so that one might decree that any discussion of the physics at 10−33 cm is unscientific because it is beyond reach of direct observation. This was the attitude for a long period after Planck, lingering even when I was a graduate student. But this ma ...
... There is a danger of defining science too rigidly, so that one might decree that any discussion of the physics at 10−33 cm is unscientific because it is beyond reach of direct observation. This was the attitude for a long period after Planck, lingering even when I was a graduate student. But this ma ...
Ch 3 PPT - Blountstown Middle School
... • Most scientists agree that the universe is 13-14 billion years old. • Scientists observe how space stretches by measuring the speed at which galaxies move away from the Earth. ...
... • Most scientists agree that the universe is 13-14 billion years old. • Scientists observe how space stretches by measuring the speed at which galaxies move away from the Earth. ...
The Impossible Electric Dark Matter Black Hole
... 1: The clear MICROSTRUCTURE or the 3D FORM of elementary particles, (also called 3DPreons) made out of convertible Higgs particles, is responsible for “Bound states of Fermions” and composite Quarks. (ref. 4) 2: The Higgs is supposed to be energetic oscillating, it is the origin all particle motion ...
... 1: The clear MICROSTRUCTURE or the 3D FORM of elementary particles, (also called 3DPreons) made out of convertible Higgs particles, is responsible for “Bound states of Fermions” and composite Quarks. (ref. 4) 2: The Higgs is supposed to be energetic oscillating, it is the origin all particle motion ...
Dust and molecular gas in the most distant quasars
... Msun already exist. • Require measurements of the bulge dynamical mass. • Resolve the stellar bulge at near-IR wavelengths. – Not yet; • Require gas supply from outside; • Rapid supper-massive black hole accretion occurs prior to the formation of the stellar bulge. ...
... Msun already exist. • Require measurements of the bulge dynamical mass. • Resolve the stellar bulge at near-IR wavelengths. – Not yet; • Require gas supply from outside; • Rapid supper-massive black hole accretion occurs prior to the formation of the stellar bulge. ...
pompton lakes high school - Pompton Lakes School District
... and tell how that radiation transfers energy and information through interstellar space. Describe the major regions of the electromagnetic spectrum and explain how Earth’s atmosphere affects our ability to make astronomical observations at different wavelengths. Explain what is meant by the term ...
... and tell how that radiation transfers energy and information through interstellar space. Describe the major regions of the electromagnetic spectrum and explain how Earth’s atmosphere affects our ability to make astronomical observations at different wavelengths. Explain what is meant by the term ...
Investigate Planets, Stars, Galaxies, and the Universe
... (Answers may include: The Sun is rotating, and looks huge. The surface is constantly changing. Some parts are darker than others. It looks different in different colors [wavelengths of light].) 2. Discuss with a partner what the Sun looks like to the human eye. Does it ever change? Why are the image ...
... (Answers may include: The Sun is rotating, and looks huge. The surface is constantly changing. Some parts are darker than others. It looks different in different colors [wavelengths of light].) 2. Discuss with a partner what the Sun looks like to the human eye. Does it ever change? Why are the image ...
pompton lakes high school - Pompton Lakes School District
... and tell how that radiation transfers energy and information through interstellar space. Describe the major regions of the electromagnetic spectrum and explain how Earth’s atmosphere affects our ability to make astronomical observations at different wavelengths. Explain what is meant by the term ...
... and tell how that radiation transfers energy and information through interstellar space. Describe the major regions of the electromagnetic spectrum and explain how Earth’s atmosphere affects our ability to make astronomical observations at different wavelengths. Explain what is meant by the term ...
Document
... Match cycles of the moon to corresponding positions of Earth, moon, and sun. Explain why the constellations visible in the night sky change throughout the year. As.1.2 Use scientific notation and astronomical units (AU, light year) to compare distances. Place astronomic objects (planets, moo ...
... Match cycles of the moon to corresponding positions of Earth, moon, and sun. Explain why the constellations visible in the night sky change throughout the year. As.1.2 Use scientific notation and astronomical units (AU, light year) to compare distances. Place astronomic objects (planets, moo ...
PH607lec08
... Our Solar System is not quite comoving: we have a velocity of 370 km/sec relative to the observable Universe. The Local Group of galaxies, which includes the Milky Way, appears to be moving at 600 km/sec relative to the observable Universe. For relatively nearby objects, Hubble's law itself becomes ...
... Our Solar System is not quite comoving: we have a velocity of 370 km/sec relative to the observable Universe. The Local Group of galaxies, which includes the Milky Way, appears to be moving at 600 km/sec relative to the observable Universe. For relatively nearby objects, Hubble's law itself becomes ...
The Case against Copernicus
... This supremely accomplished astronomer had been impressed by the elegance of the Copernican system. Yet he was bothered by certain aspects of it. One thing that unsettled him was the lack of a physical explanation for what could make Earth move. (Brahe lived more than a century before the invention ...
... This supremely accomplished astronomer had been impressed by the elegance of the Copernican system. Yet he was bothered by certain aspects of it. One thing that unsettled him was the lack of a physical explanation for what could make Earth move. (Brahe lived more than a century before the invention ...
Integrative Studies 410 Our Place in the Universe
... The Missing Mass Problem • Dark Matter is dark at all wavelengths, not just visible light • The Universe as a whole consists of up to 25% of Dark Matter! Strange! • What is it? ...
... The Missing Mass Problem • Dark Matter is dark at all wavelengths, not just visible light • The Universe as a whole consists of up to 25% of Dark Matter! Strange! • What is it? ...
Protogalaxies
... of galaxy formation would have different and equally legitimate definitions in mind. For example, an observer may mean ‘the first major burst of star formation in a progenitor of a present-day elliptical galaxy’, whereas a theorist may mean ‘the peak merging epoch of dark halos of the fragments whic ...
... of galaxy formation would have different and equally legitimate definitions in mind. For example, an observer may mean ‘the first major burst of star formation in a progenitor of a present-day elliptical galaxy’, whereas a theorist may mean ‘the peak merging epoch of dark halos of the fragments whic ...
No Slide Title
... Looking to the Future The participants in NUVA have realized with great concern that no firm plans exist to maintain an Ultraviolet observing capability for astrophysics for the future. This is despite the fact that the range of important astrophysical issues in astrophysics which require observatio ...
... Looking to the Future The participants in NUVA have realized with great concern that no firm plans exist to maintain an Ultraviolet observing capability for astrophysics for the future. This is despite the fact that the range of important astrophysical issues in astrophysics which require observatio ...
Non-standard cosmology
![](https://commons.wikimedia.org/wiki/Special:FilePath/WMAP2.jpg?width=300)
A non-standard cosmology is any physical cosmological model of the universe that has been, or still is, proposed as an alternative to the Big Bang model of standard physical cosmology. In the history of cosmology, various scientists and researchers have disputed parts or all of the Big Bang due to a rejection or addition of fundamental assumptions needed to develop a theoretical model of the universe. From the 1940s to the 1960s, the astrophysical community was equally divided between supporters of the Big Bang theory and supporters of a rival steady state universe. It was not until advances in observational cosmology in the late 1960s that the Big Bang would eventually become the dominant theory, and today there are few active researchers who dispute it.The term non-standard is applied to any cosmological theory that does not conform to the scientific consensus, but is not used in describing alternative models where no consensus has been reached, and is also used to describe theories that accept a ""big bang"" occurred but differ as to the detailed physics of the origin and evolution of the universe. Because the term depends on the prevailing consensus, the meaning of the term changes over time. For example, hot dark matter would not have been considered non-standard in 1990, but would be in 2010. Conversely, a non-zero cosmological constant resulting in an accelerating universe would have been considered non-standard in 1990, but is part of the standard cosmology in 2010.