Absolving the SSINS of Precision Interferometric Radio Data: A New Technique for Mitigating Ultra-faint Radio Frequency Interference. (arXiv:1906.01093v1 [astro-ph.IM])

Absolving the SSINS of Precision Interferometric Radio Data: A New Technique for Mitigating Ultra-faint Radio Frequency Interference. (arXiv:1906.01093v1 [astro-ph.IM])
<a href="http://arxiv.org/find/astro-ph/1/au:+Wilensky_M/0/1/0/all/0/1">Michael J. Wilensky</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Morales_M/0/1/0/all/0/1">Miguel F. Morales</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Hazelton_B/0/1/0/all/0/1">Bryna J. Hazelton</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Barry_N/0/1/0/all/0/1">Nichole Barry</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Byrne_R/0/1/0/all/0/1">Ruby Byrne</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Roy_S/0/1/0/all/0/1">Sumit Roy</a>

We introduce a new method for mitigating ultra-faint radio frequency
interference (RFI), which we call Sky-Subtracted Incoherent Noise Spectra
(SSINS). SSINS is designed to identify and remove RFI below the single baseline
thermal noise. We demonstrate the capabilities of SSINS using the Murchison
Widefield Array (MWA) in Western Australia. Using SSINS, we successfully imaged
aircraft flying over the array via digital television (DTV) reflection. We also
made SSINS-informed data cuts to substantially improve an MWA Epoch of
Reionization power spectrum limit. We describe how to use SSINS with new data.
SSINS is publicly available, and we have constructed comprehensive usage
tutorials and documentation.

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