How does CMB temperature power spectrum be an evidence for the exsistance of dark energy?

Expert Solution

genius_generous answered 3 years ago

Explain how CMB data can be used to determine the dark matter content of the Universe.

1. Dark Energy (a) Why is dark energy "dark"? Why is it "energy"? (b) Give at...

1. Dark Energy (a) Why is dark energy "dark"? Why is it "energy"? (b) Give at least one way that dark energy is different from dark matter. Also give at least one way that dark energy is similar to dark matter. (c) What is the difference between the cosmological constant and dark energy?

Inspired by How do we know that dark matter is dark? and What is the temperature...

Inspired by How do we know that dark matter is dark? and What is the temperature of the surface and core of a neutron star formed 12 billion years ago now equal to?

How does a line spectrum differ from a continuous spectrum? Why does an atom produce a...

How does a line spectrum differ from a continuous spectrum? Why does an atom produce a line spectrum rather than continuous spectrum when energy is added to the atom?

The cosmic microwave background (CMB) matches a 2.7 K blackbody spectrum extremely well. For a space...

The cosmic microwave background (CMB) matches a 2.7 K blackbody spectrum extremely well. For a space telescope observing the CMB with an efficient detector with a collecting area of 0.01 m2, estimate (i) the wavelength at which the CMB peaks in intensity, (ii) the power in watts of CMB photons collected by the detector and (iii) the number of CMB photons per unit volume in the vicinity of the space telescope.

5. A power cycle receives energy QH by heat transfer from a high temperature energy source...

5. A power cycle receives energy QH by heat transfer from a high temperature energy source at TH = 2000 K and rejects energy QL by heat transfer to a low temperature energy sink at TL = 400 K. For each of the following cases determine whether the cycle operate reversibly, irreversibly, or is impossible. (a) QH = 1200 kJ, Wcycle = 1020 kJ. (b) QH = 1200 kJ, QL = 240 kJ. (c) Wcycle = 1400 kJ, QL =...

Inflation (a) Why is it puzzling that the observed CMB temperature is almost exactly the same...

Inflation (a) Why is it puzzling that the observed CMB temperature is almost exactly the same on opposite sides of the sky? How would this result be explained in cosmology theories that do not include inflation? (b) How does inflation answer the puzzle from part (a)? What other properties of the homogeneous universe does inflation explain?

Inflation (a) Why is it puzzling that the observed CMB temperature is almost exactly the same...

Inflation (a) Why is it puzzling that the observed CMB temperature is almost exactly the same on opposite sides of the sky? How would this result be explained in cosmology theories that do not include inflation? (b) How does inflation answer the puzzle from part (a)? What other properties of the homogeneous universe does inflation explain?

Inflation (a) Why is it puzzling that the observed CMB temperature is almost exactly the same...

Inflation (a) Why is it puzzling that the observed CMB temperature is almost exactly the same on opposite sides of the sky? How would this result be explained in cosmology theories that do not include inflation? (b) How does inflation answer the puzzle from part (a)? What other properties of the homogeneous universe does inflation explain?

7. When does mental illness go to the dark side? And how “dark” can that “side”...

7. When does mental illness go to the dark side? And how “dark” can that “side” become? 8. How does mental illness change: A family? A society? A culture?

Question

How does CMB temperature power spectrum be an evidence for the exsistance of dark energy?

Solutions

Expert Solution

Related Solutions

Explain how CMB data can be used to determine the dark matter content of the Universe.

1. Dark Energy (a) Why is dark energy "dark"? Why is it "energy"? (b) Give at...

Inspired by How do we know that dark matter is dark? and What is the temperature...

How does a line spectrum differ from a continuous spectrum? Why does an atom produce a...

The cosmic microwave background (CMB) matches a 2.7 K blackbody spectrum extremely well. For a space...

5. A power cycle receives energy QH by heat transfer from a high temperature energy source...

Inflation (a) Why is it puzzling that the observed CMB temperature is almost exactly the same...

Inflation (a) Why is it puzzling that the observed CMB temperature is almost exactly the same...

Inflation (a) Why is it puzzling that the observed CMB temperature is almost exactly the same...

7. When does mental illness go to the dark side? And how “dark” can that “side”...