Astronomy Papers That Caught My Eye In Today's arXiv
There are 69 papers today (Tuesday), not counting replacements. Again, there are a large number of papers about the CTA and similar instruments.
Topics: Radio Neutrino Observing, An HLQG & CMB Anomaly, Better S-Star PositionsRadio Neutrino Observing http://arxiv.org/abs/1509.01584
IceCube has detected a small number of cosmic neutrinos (two PeV scale ones so far). Working with a bit more collecting area would help get statistically significant amounts of data on such events. This paper looks at a recognizable radio signal observable when neutrinos pass through the Earth and happen to interact with normal matter at the top of the crust cascading into the lower atmosphere. It describes what is seen at various radio wavelengths, and how it can be read to see vital information about the energy and source direction.An HLQG & CMB Anomaly http://arxiv.org/abs/1509.01879
Huge Large Quasar Groups (> 1500 million LY long) might exist, or perhaps they are superpositions of smaller Large Quasar Groups. This paper looks at temperature anomalies in the CMB that match up with a particular HLQG at about z=1.27. The correlation evidence is strong suggesting that the HLQG is real. Issues of how such a large structure could exist in the universe will lead to future discussions.Better S-Star Positions http://arxiv.org/abs/1509.01941
The stars orbiting Sgr A-star have designations that start with S (hence S-Stars). Accurate measurements of their positions can potentially lead to the detection of relativistic effects in their orbits. This paper is about the observations of these stars with the VLT's NACO imager, and with radio techniques looking at the SiO masers in some of these stars. The future for this effort is bright.