Cosmological Perturbations in Phantom Dark Energy Models
... As can be seen in the first row of Figure 1, the evolution of the matter perturbations for different models are almost indistinguishable among them. At the initial radiation-dominated epoch, all modes remain constant until they enter their Hubble horizon; then, during the matter-dominated epoch, the ...
... As can be seen in the first row of Figure 1, the evolution of the matter perturbations for different models are almost indistinguishable among them. At the initial radiation-dominated epoch, all modes remain constant until they enter their Hubble horizon; then, during the matter-dominated epoch, the ...
Answer to question 1 - Northwestern University
... (2) Brighter standard candles A. Supernovae B. Red giants, globular clusters, brightest galaxy in a cluster ...
... (2) Brighter standard candles A. Supernovae B. Red giants, globular clusters, brightest galaxy in a cluster ...
Teaching Text Structure with Understanding the Scale of the Universe
... better understand the science ideas under study. Reading, like science, can be an act of inquiry when there are genuine questions to be investigated. ...
... better understand the science ideas under study. Reading, like science, can be an act of inquiry when there are genuine questions to be investigated. ...
PART 1 - Berrigasteiz
... Activity 0: Introduction to the unit: The Cosmic Clock Description Ss are introduced to Astronomy: first, the teacher elicits names and concepts known by students; next, the teacher tells them about some ideas of understanding the universe through history; finally, he or she asks them to make hypoth ...
... Activity 0: Introduction to the unit: The Cosmic Clock Description Ss are introduced to Astronomy: first, the teacher elicits names and concepts known by students; next, the teacher tells them about some ideas of understanding the universe through history; finally, he or she asks them to make hypoth ...
Universe, Dark Energy and Dark Matter
... around as and this uniformity applies not only to their distribution but also to the law of increase of their velocities as they move away from us. How can it be explained? It may be suggested that man takes the central position in the Universe and all the galaxies are running away from us. Other sc ...
... around as and this uniformity applies not only to their distribution but also to the law of increase of their velocities as they move away from us. How can it be explained? It may be suggested that man takes the central position in the Universe and all the galaxies are running away from us. Other sc ...
Will Dark Energy Tear the Universe Apart?
... white dwarfs of the same mass, they all have a similar luminosity. Both groups observed the light curves from type Ia supernovae and found that the more distant supernovae (which are from an earlier time) were dimmer than expected if the universe was expanding at a constant rate. This means that the ...
... white dwarfs of the same mass, they all have a similar luminosity. Both groups observed the light curves from type Ia supernovae and found that the more distant supernovae (which are from an earlier time) were dimmer than expected if the universe was expanding at a constant rate. This means that the ...
Earth apart.
... white dwarfs of the same mass, they all have a similar luminosity. Both groups observed the light curves from type Ia supernovae and found that the more distant supernovae (which are from an earlier time) were dimmer than expected if the universe was expanding at a constant rate. This means that the ...
... white dwarfs of the same mass, they all have a similar luminosity. Both groups observed the light curves from type Ia supernovae and found that the more distant supernovae (which are from an earlier time) were dimmer than expected if the universe was expanding at a constant rate. This means that the ...
The Black Hole at the Beginning of Time
... energy. We imagine that, shortly after the big bang, the uni- nuclear fusion powers a star for most of its life, but eventually verse was filled with energy that takes the form of a hypotheti- the star exhausts all its nuclear fuel, and gravity takes over. A cal particle called the inflaton (pronoun ...
... energy. We imagine that, shortly after the big bang, the uni- nuclear fusion powers a star for most of its life, but eventually verse was filled with energy that takes the form of a hypotheti- the star exhausts all its nuclear fuel, and gravity takes over. A cal particle called the inflaton (pronoun ...
Dark Energy
... Dark Matter: The internal kinematics of galaxies like the Milky Way indicate more mass than we see in stars and gas. Furthermore, all measures of mass exceed the baryonic inventory. We don’t know what the dark matter is… axions, LSP…? Dark Energy: The Universe has recently entered a renewed phase of ...
... Dark Matter: The internal kinematics of galaxies like the Milky Way indicate more mass than we see in stars and gas. Furthermore, all measures of mass exceed the baryonic inventory. We don’t know what the dark matter is… axions, LSP…? Dark Energy: The Universe has recently entered a renewed phase of ...
Cosmology Notes - U of L Class Index
... models is the order in which structures on different scales arise. For cold dark matter, structure arises from the “bottom up,” with small structures developing first, and then combining into larger structures (stars, galaxies, clusters forming in that order). But for hot dark matter, large-scale st ...
... models is the order in which structures on different scales arise. For cold dark matter, structure arises from the “bottom up,” with small structures developing first, and then combining into larger structures (stars, galaxies, clusters forming in that order). But for hot dark matter, large-scale st ...
Astronomy and Space Science
... • How fast an object revolves depends on how much matter inside its orbit. If all the matters are visible, the orbital velocities of stars, say, near the edge of our galaxy will follow the red line above. • However, we discovered that they are moving faster than expected, by Kepler’s law, there must ...
... • How fast an object revolves depends on how much matter inside its orbit. If all the matters are visible, the orbital velocities of stars, say, near the edge of our galaxy will follow the red line above. • However, we discovered that they are moving faster than expected, by Kepler’s law, there must ...
Answer to question 1 - Northwestern University
... • We start with small distances we can effectively measure with a ruler. • Next step in the design is to figure out that the “parallax” can tell us distances. • Parallax is the effect of noting you can discern the distance to an object if you can measure how much it appears to move around as you do. ...
... • We start with small distances we can effectively measure with a ruler. • Next step in the design is to figure out that the “parallax” can tell us distances. • Parallax is the effect of noting you can discern the distance to an object if you can measure how much it appears to move around as you do. ...
Some FAQs and Answers for the Big Bang, Dark Matter, and Dark
... the Universe has stretched by an enormous factor (roughly 1000), which also stretches the wavelength of the light. The glow, which is the CMB, now looks like radiation from a much cooler gas at a temperature 3 Kelvin. This is an actual decrease of the temperature of the Universe by a factor or rough ...
... the Universe has stretched by an enormous factor (roughly 1000), which also stretches the wavelength of the light. The glow, which is the CMB, now looks like radiation from a much cooler gas at a temperature 3 Kelvin. This is an actual decrease of the temperature of the Universe by a factor or rough ...
Instructor`s Guide
... • Stars condensed by gravity out of clouds of molecules of the lightest elements until nuclear fusion of the light elements into heavier ones began to occur. Fusion released great amounts of energy over millions of years. • Eventually, some stars exploded, producing clouds containing heavy element ...
... • Stars condensed by gravity out of clouds of molecules of the lightest elements until nuclear fusion of the light elements into heavier ones began to occur. Fusion released great amounts of energy over millions of years. • Eventually, some stars exploded, producing clouds containing heavy element ...
Atoms and Starlight Generating light
... Lines tell us about chemical composition as well as temperature and ...
... Lines tell us about chemical composition as well as temperature and ...
Lecture 24 Early Universe
... The names of quark flavours (up, down, strange, charm, bottom, and top) were also chosen arbitrarily based on the need to name them something that could be easily remembered and used. An important property of quarks is called confinement, which states that individual quarks are not seen because they ...
... The names of quark flavours (up, down, strange, charm, bottom, and top) were also chosen arbitrarily based on the need to name them something that could be easily remembered and used. An important property of quarks is called confinement, which states that individual quarks are not seen because they ...
2 Big Bang - Net Texts
... In the first few moments after the Big Bang, the universe was unimaginably hot and dense. As the universe expanded, it became less dense and began to cool. After only a few seconds, protons, neutrons, and electrons could form. After a few minutes, those subatomic particles came together to create hy ...
... In the first few moments after the Big Bang, the universe was unimaginably hot and dense. As the universe expanded, it became less dense and began to cool. After only a few seconds, protons, neutrons, and electrons could form. After a few minutes, those subatomic particles came together to create hy ...
Student Worksheet
... b) Use the table above to discuss whether galaxies B and C are moving away from Alfred. ...
... b) Use the table above to discuss whether galaxies B and C are moving away from Alfred. ...
Galaxies - WordPress.com
... The Ant Nebula, a cloud of dust and gas who resembles an ant when observed using ground-based telescopes. The nebula lies within our galaxy between 3,000 and 6,000 light years from Earth ...
... The Ant Nebula, a cloud of dust and gas who resembles an ant when observed using ground-based telescopes. The nebula lies within our galaxy between 3,000 and 6,000 light years from Earth ...
Hubble Deep Field Image
... Could not contain very bright objects or anything that emitted too much infrared, x-ray, or UV In addition, field could never be occulted by the Earth or Moon. ...
... Could not contain very bright objects or anything that emitted too much infrared, x-ray, or UV In addition, field could never be occulted by the Earth or Moon. ...
Lecture 2: ppt, 5 MB
... Chandra flies 200 times higher than Hubble - more than 1/3 of the way to the moon! Chandra can observe X-rays from clouds of gas so vast that it takes light five million years to go from one side to the other! During maneuvers from one target to the next, Chandra slews more slowly than the min ...
... Chandra flies 200 times higher than Hubble - more than 1/3 of the way to the moon! Chandra can observe X-rays from clouds of gas so vast that it takes light five million years to go from one side to the other! During maneuvers from one target to the next, Chandra slews more slowly than the min ...
Test 2 - Physics@Brock
... 17. Rich galaxy clusters contain (a) a high concentration of swimming pools, sports cars, and affected accents. (b) more than one million galaxies. (c) more than one thousand galaxies. (d) more than one hundred galaxies. 18. A common result of a galaxy collision is (a) the creation of several “child ...
... 17. Rich galaxy clusters contain (a) a high concentration of swimming pools, sports cars, and affected accents. (b) more than one million galaxies. (c) more than one thousand galaxies. (d) more than one hundred galaxies. 18. A common result of a galaxy collision is (a) the creation of several “child ...