Andromeda vs Milky Way dust emissions

In summary, the recently released Planck XXV data mapping out dust emissions in Andromeda may not have much relevance to the controversy surrounding BICEP 2's detection of primordial gravity waves. This is because the controversy revolves around the BICEP team's handling of foreground B-modes and their data, which may not be improved by using Andromeda's data set. The full Planck results are expected to be released in October, and only a second verification by another group or an in-depth reanalysis with a complete data set can provide a definitive answer. In addition, it is possible that the controversy could be resolved if it is found to be an issue with E-mode coupling. Overall, the topic of general relativity
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Chronos
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As many are aware, the announced detection of primordial gravity waves by BICEP 2 was heavily criticized based on dust emission modeling. Today, Planck XXV was released which mapped out the dust emissions of Andromeda. Assuming Andromeda is representative of the Milky Way in most relevant ways, the obvious question is does Planck XXV affirm, cast further doubt upon, or is irrelevant to BICEP 2 dust modeling? I was perhaps naively disappointed this was never mentioned in the paper. The paper of interest is http://arxiv.org/abs/1407.5452,
 
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Chronos said:
As many are aware, the announced detection of primordial gravity waves by BICEP 2 was heavily criticized based on dust emission modeling. Today, Planck XXV was released which mapped out the dust emissions of Andromeda. Assuming Andromeda is representative of the Milky Way in most relevant ways, the obvious question is does Planck XXV affirm, cast further doubt upon, or is irrelevant to BICEP 2 dust modeling? I was perhaps naively disappointed this was never mentioned in the paper. The paper of interest is http://arxiv.org/abs/1407.5452,

Seems like the paper would be mostly irrelevant; considering the controversy was about the BICEP teams handing of foreground B-modes and the data (or lack thereof) they used. Using Andromeda's data set to calculate foreground tensor perturbations might not be any better than the incomplete set they used I would assume. Full Planck results come out in October right? Only a second verification by another group, or an in-depth reanalysis with a full data set would squash this discussion one way or another.

What if it all turns out to be an E-mode coupling issue. :tongue2:

Anyway, GR still confuses the hell out of me, mostly.
 

1. What are Andromeda and Milky Way dust emissions?

Andromeda and Milky Way dust emissions refer to the particles of dust that are found within these two galaxies. These emissions are composed of a combination of carbon, silicon, and other elements, and can be observed through various techniques such as infrared and radio astronomy.

2. How do dust emissions affect the galaxies?

Dust emissions play a crucial role in the formation and evolution of galaxies. They act as the building blocks for new stars and planets, and also contribute to the overall structure and dynamics of the galaxies. Dust can also absorb and scatter light, impacting the appearance and observations of the galaxies.

3. Which galaxy has higher dust emissions - Andromeda or Milky Way?

Based on current observations, Andromeda has been found to have higher dust emissions compared to the Milky Way. This is due to the fact that Andromeda is larger and more massive, and therefore has a greater amount of dust particles present within it.

4. How do scientists study dust emissions in these galaxies?

Scientists use a variety of techniques to study dust emissions in Andromeda and the Milky Way. This includes using telescopes that can detect infrared and radio wavelengths, as well as analyzing data and images from these observations to determine the amount and distribution of dust within the galaxies.

5. Do dust emissions have any impact on life in these galaxies?

While dust emissions may seem insignificant to life on Earth, they actually play a vital role in the development of planets and potentially the emergence of life. Dust particles can serve as catalysts for chemical reactions that lead to the formation of complex molecules, which are essential for life as we know it.

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