A Radio Interferometer for use with very Long Baselines

Using Small Radio Telescopes for Very Long Baseline Interferometry

Throughout the summer development has continued on the next generation of the Small Radio Telescope for use as a Very Long Baseline Interferometry type interferometer. This paper discusses the difficulties with setting up this new interferometer and presents some results obtained using this small radio telescope interferometer. We used 3 small radio telescopes to form one baseline of about 5 me...

Sterile Neutrino Searches with Precision Measurements at Very Short Baselines

Search for Oscillations of Reactor Antineutrinos at Very Short Baselines

Anomalous results from a variety of neutrino experiments, astrophysical observations, and cosmology suggest the possible existence of sterile neutrinos. Most recently, a re-analysis of short-baseline reactor neutrino experiments has revealed a discrepancy between observations and the predicted antineutrino flux. While the spectral shape and uncertainties obtained in this work are comparable to ...

Surface figure measurements of radio telescopes with a shearing interferometer.

A new technique for determining the surface figure of large submillimeter wavelength telescopes is presented, which is based on measuring the telescope's focal plane diffraction pattern with a shearing interferometer. In addition to the instrumental theory, results obtained using such an interferometer on the 10.4-m diam telescope of the Caltech Submillimeter Observatory are discussed. Using wa...

Earth Matter Effects at Very Long Baselines and the Neutrino Mass Hierarchy

We study matter effects which arise in the muon neutrino oscillation and survival probabilities relevant to atmospheric neutrino and very long baseline (> 4000 Km) beam experiments. The inter-relations between the three probabilities Pμe, Pμτ and Pμμ are examined. It is shown that large and observable sensitivity to the neutrino mass hierarchy can be present in Pμμ and Pμτ . We emphasize that a...