Our first paper about the drone calibrator is out on the arxiv today! Using data from our field tests last year we measured the stability and accuracy of the beam maps. The repeatability compared well to measurements made using satellites (thats the plot on the right) and the measurements matched up well with the models. There were a few issues though. […]
Paper Title: A Flux Scale for Southern Hemisphere 21cm EoR Experiments arxiv,data,fits If you look at typical catalogs of sources in the southern hemisphere epoch of reionization band you soon realize why measurements often disagree by 20%. Even the brightest sources one would use for calibration are uncertain. As you can see from the plot to
In which PAPER sets the standard Read More »
Title: The precision and accuracy of early Epoch of Reionization foreground models: comparing MWA and PAPER 32-antenna source catalogs This paper compares the fluxes in the first PAPER and MWA catalogs. These sources are the brightest foregrounds in front of the EoR HI emission. Various estimates suggest that we have to subtract these guys to anywhere
Publication: The precision and accuracy of early Epoch of Reionization foreground models Read More »
Title: “A Per-baseline, Delay-spectrum Technique for Accessing the 21 cm Cosmic Reionization Signature” This paper explains the PAPER method for measuring the EoR power spectrum. While some experiments plan on subtracting foregrounds, PAPER will stick to uncontaminated regions of power spectrum space. Narrow field simulations had previously expected this region to have little dependence on
Publication: The PAPER power spectrum method Read More »
Title: A Sensitivity and Array-configuration Study for Measuring the Power Spectrum of 21 cm Emission from Reionization PAPER will soon be performing long integrations to the power spectrum of high redshift Hydrogen. What is the best configuration? In the process of answering this question we also carefully (re) derive the relationship between the output of an
Publication: PAPER configuration and sensitivity Read More »
We’ve used data from April and September 2009 to make an image of the sky that covers 30000 square degrees. This is more than half of the entire sky! The results, including a list of the fluxes of known sources, are published in the Astrophysical Journal Letters. The data are also available here: PSA32 Healpix
Publication: First PAPER Catalog Read More »