Differences between polarisations and temperature anisotropies in the

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In summary, polarisation and temperature anisotropies are two ways of measuring the variation in temperature of the cosmic microwave background (CMB) radiation. While polarisation refers to the direction of the electric field, temperature anisotropies refer to temperature differences across the sky. These two measurements are closely related and provide valuable information about the early universe, such as density fluctuations and the formation of structures like galaxies. Specialized instruments such as telescopes and satellites are used to study these measurements, which play a crucial role in cosmology by supporting the theory of cosmic inflation and helping us understand fundamental properties of the universe.
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pleasehelpmeno
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Basically as the questions says, can anyone explain what E and B mode polarisations are and homework they differ from temp anisotropies.

I know that E mode are from scalar and tensor perturbations B mode from tensor perturbations (Gwaves). I don't really understand what they are or how they differ from the change in temp.

Any recommended literature would be helpful
 
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See http://cosmology.berkeley.edu/~yuki/CMBpol/CMBpol.htm
 

What is the difference between polarisation and temperature anisotropies?

Polarisation and temperature anisotropies are two different ways to measure the variation in the temperature of the cosmic microwave background (CMB) radiation. Polarisation refers to the direction in which the electric field of the radiation oscillates, while temperature anisotropies refer to the differences in temperature across the sky.

How are polarisation and temperature anisotropies related?

Polarisation and temperature anisotropies are closely related because they both provide valuable information about the early universe. Temperature anisotropies are caused by density fluctuations in the early universe, which also generate polarisation in the CMB radiation. By studying both, scientists can gain a better understanding of the conditions in the early universe.

What can we learn from studying polarisation and temperature anisotropies?

Studying polarisation and temperature anisotropies in the CMB radiation can provide valuable insights into the early universe and the formation of structures such as galaxies and galaxy clusters. It can also help us understand the nature of dark matter and dark energy, which make up the majority of the universe.

How do scientists measure polarisation and temperature anisotropies?

Scientists use specialized instruments, such as telescopes and satellites, to measure polarisation and temperature anisotropies in the CMB radiation. These instruments are designed to detect small variations in the intensity and direction of the radiation across the sky.

What is the significance of polarisation and temperature anisotropies in cosmology?

Polarisation and temperature anisotropies play a crucial role in cosmology because they provide evidence for the theory of cosmic inflation, which describes the rapid expansion of the universe in its early stages. They also help us understand the fundamental properties of the universe, such as its age, composition, and evolution.

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