Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: NASA Probe Study Report: Farside Array for Radio Science Investigations
  of the Dark ages and Exoplanets (FARSIDE)   This is the final report submitted to NASA for a Probe-class concept study of
the "Farside Array for Radio Science Investigations of the Dark ages and
Exoplanets" (FARSIDE), a low radio frequency interferometric array on the
farside of the Moon. The design study focused on the instrument, a deployment
rover, the lander and base station, and delivered an architecture broadly
consistent with the requirements for a Probe mission. This notional
architecture consists of 128 dipole antennas deployed across a 10 km area by a
rover, and tethered to a base station for central processing, power and data
transmission to the Lunar Gateway, or an alternative relay satellite. FARSIDE
would provide the capability to image the entire sky each minute in 1400
channels spanning frequencies from 150 kHz to 40 MHz, extending down two orders
of magnitude below bands accessible to ground-based radio astronomy. The lunar
farside can simultaneously provide isolation from terrestrial radio frequency
interference, auroral kilometric radiation, and plasma noise from the solar
wind. This would enable near-continuous monitoring of the nearest stellar
systems in the search for the radio signatures of coronal mass ejections and
energetic particle events, and would also detect the magnetospheres for the
nearest candidate habitable exoplanets. Simultaneously, FARSIDE would be used
to characterize similar activity in our own solar system, from the Sun to the
outer planets. Through precision calibration via an orbiting beacon, and
exquisite foreground characterization, FARSIDE would also measure the Dark Ages
global 21-cm signal at redshifts from 50-100. It will also be a pathfinder for
a larger 21-cm power spectrum instrument by carefully measuring the foreground
with high dynamic range.

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The categories of this paper are: mtrl-th
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The categories of this paper are: supr-con
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The categories of this paper are: quant-ph
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The categories of this paper are: stat
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The categories of this paper are: gr-qc
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The categories of this paper are: plasm-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: nlin
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The categories of this paper are: math
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The categories of this paper are: ao-sci
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The categories of this paper are: bayes-an
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The categories of this paper are: acc-phys
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The categories of this paper are: cond-mat
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The categories of this paper are: atom-ph
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The categories of this paper are: q-fin
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The categories of this paper are: chao-dyn