Packed Ultra-wideband Mapping Array (PUMA): A Radio Telescope for Cosmology and Transients. (arXiv:1907.12559v1 [astro-ph.IM])

Packed Ultra-wideband Mapping Array (PUMA): A Radio Telescope for Cosmology and Transients. (arXiv:1907.12559v1 [astro-ph.IM])
<a href="http://arxiv.org/find/astro-ph/1/au:+Bandura_K/0/1/0/all/0/1">Kevin Bandura</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Castorina_E/0/1/0/all/0/1">Emanuele Castorina</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Connor_L/0/1/0/all/0/1">Liam Connor</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Foreman_S/0/1/0/all/0/1">Simon Foreman</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Green_D/0/1/0/all/0/1">Daniel Green</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Karagiannis_D/0/1/0/all/0/1">Dionysios Karagiannis</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Liu_A/0/1/0/all/0/1">Adrian Liu</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Masui_K/0/1/0/all/0/1">Kiyoshi W. Masui</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Meerburg_D/0/1/0/all/0/1">Daan Meerburg</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Munchmeyer_M/0/1/0/all/0/1">Moritz Münchmeyer</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Newburgh_L/0/1/0/all/0/1">Laura B. Newburgh</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Ng_C/0/1/0/all/0/1">Cherry Ng</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+OConnor_P/0/1/0/all/0/1">Paul O'Connor</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Obuljen_A/0/1/0/all/0/1">Andrej Obuljen</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Padmanabhan_H/0/1/0/all/0/1">Hamsa Padmanabhan</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Saliwanchik_B/0/1/0/all/0/1">Benjamin Saliwanchik</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Shaw_J/0/1/0/all/0/1">J. Richard Shaw</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Sheehy_C/0/1/0/all/0/1">Christopher Sheehy</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Stankus_P/0/1/0/all/0/1">Paul Stankus</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Slosar_A/0/1/0/all/0/1">Anže Slosar</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Stebbins_A/0/1/0/all/0/1">Albert Stebbins</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Timbie_P/0/1/0/all/0/1">Peter T. Timbie</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Tyndall_W/0/1/0/all/0/1">William Tyndall</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Villaescusa_Navarro_F/0/1/0/all/0/1">Francisco Villaescusa-Navarro</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Wallisch_B/0/1/0/all/0/1">Benjamin Wallisch</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+White_M/0/1/0/all/0/1">Martin White</a>

PUMA is a proposal for an ultra-wideband, low-resolution and transit
interferometric radio telescope operating at $200-1100,mathrm{MHz}$. Its
design is driven by six science goals which span three science themes: the
physics of dark energy (measuring the expansion history and growth of the
universe up to $z=6$), the physics of inflation (constraining primordial
non-Gaussianity and primordial features) and the transient radio sky (detecting
one million fast radio bursts and following up SKA-discovered pulsars). We
propose two array configurations composed of hexagonally close-packed 6m dish
arrangements with 50% fill factor. The initial 5,000 element ‘petite array’ is
scientifically compelling, and can act as a demonstrator and a stepping stone
to the full 32,000 element ‘full array’. Viewed as a 21cm intensity mapping
telescope, the program has the noise equivalent of a traditional spectroscopic
galaxy survey comprised of 0.6 and 2.5 billion galaxies at a comoving
wavenumber of $k=0.5,hmathrm{Mpc}^{-1}$ spanning the redshift range $z = 0.3
– 6$ for the petite and full configurations, respectively. At redshifts beyond
$z=2$, the 21cm technique is a uniquely powerful way of mapping the universe,
while the low-redshift range will allow for numerous cross-correlations with
existing and upcoming surveys. This program is enabled by the development of
ultra-wideband radio feeds, cost-effective dish construction methods, commodity
radio-frequency electronics driven by the telecommunication industry and the
emergence of sufficient computing power to facilitate real-time signal
processing that exploits the full potential of massive radio arrays. The
project has an estimated construction cost of 55 and 330 million FY19 USD for
the petite and full array configurations. Including R&D, design, operations and
science analysis, the cost rises to 125 and 600 million FY19 USD, respectively.

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