Recent arXiv Reads
posted on October 13 2017This is as much for me as for anyone else, just to track what I've read and what I haven't:
- Monodromic Dark Energy
- Uncovering Multiple Populations in NGC 7099 (M 30) using Washington Photometry
- Age Bimodality in the Central Region of Pseudobulges in S0 Galaxies
- Modelling the ArH+ Emission from the Crab Nebula
- Inflationary Schism After Planck2013
- Inflationary Paradigm in Trouble After Planck2013
- Implications of Planck2015 for Inflationary, Ekpyrotic and Anamorphic Bouncing Cosmologies
As you can probably guess, this year I've spent a lot of time thinking about galactic composition and trying to get my head around a few key questions:
- So if dark matter is a requirement to understand what we see in observed galaxies, how are we identifying velocities of individual stars in distant objects?
- What's the most distant galaxy we can see where individual stars are identifiable and whose velocity can be accurately measured?
- Considering the fact that when we look at a galaxy we're looking at an object where there is a significant delay from the far side of the object to the near side of the object (imagine a coin on a table arms length from you) on the order of hundreds of thousands of years, does this change what we expect to observe when it comes to spectral analysis?
- Assuming dark matter was present, what affect would this have on the evolution of the early universe?
- We talk about different epochs in the evolution of the universe w/r/t quark gluon plasma, the hadron epoch, recombination, etc. Are there similar epochs that would have focused on dark matter?
- Since dark matter appears to be non-interacting and non-collisional, what does compression of dark matter result in?
- Does identification of dark matter result in a shortcut to quantum gravity? Since there appears to be no such thing as a macroscopic clump of dark matter, the main way that we would describe the behavior of dark matter would be at the quantum level.
- What is the presumed quantum model of dark matter? Since it appears to be non-interacting, is there anything we can even say about quantum dark matter?
- How are dark matter models presumed to work with black holes? Can dark matter be assumed to have finite density?
Ok, so more than a few questions.