djacobs

My first Gala

ASU undergrad and AZ Space Grant intern Michael Busch has been stopping by my office this semester, helping me look at MWA cosmology data and learning about radio astronomy. Turns out he’s a Pillar of the Community! Among other things he’s a Residential Assistant, responsible for a passel of undergrads in the newly refurbished Manzanita […]

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In which PAPER sets the standard

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

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Publication: The precision and accuracy of early Epoch of Reionization foreground models

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

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PAPER 2012 Deployment

During this trip we moved another 32 antenna into the grid configuration. This array will be left running over the (southern) Summer until sometime in mid 2013. This should be enough data to make the most sensitive EoR measurement yet! Also: I got to be co-pilot in an airplane! [alpine-phototile-for-picasa-and-google-plus src=”user_album” uid=”109170256040963038320″ ualb=”5856444057462896289″ imgl=”picasa” dl=”1″

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Publication: The PAPER power spectrum method

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

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