Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An Atomic Gravitational Wave Interferometric Sensor (AGIS)   We propose two distinct atom interferometer gravitational wave detectors, one
terrestrial and another satellite-based, utilizing the core technology of the
Stanford 10 m atom interferometer presently under construction. Each
configuration compares two widely separated atom interferometers run using
common lasers. The signal scales with the distance between the interferometers,
which can be large since only the light travels over this distance, not the
atoms. The terrestrial experiment with baseline ~1 km can operate with strain
sensitivity ~10^(-19) / Hz^(1/2) in the 1 Hz - 10 Hz band, inaccessible to
LIGO, and can detect gravitational waves from solar mass binaries out to
megaparsec distances. The satellite experiment with baseline ~1000 km can probe
the same frequency spectrum as LISA with comparable strain sensitivity
~10^(-20) / Hz^(1/2). The use of ballistic atoms (instead of mirrors) as
inertial test masses improves systematics coming from vibrations, acceleration
noise, and significantly reduces spacecraft control requirements. We analyze
the backgrounds in this configuration and discuss methods for controlling them
to the required levels.

19
The categories of this paper are: eess
8
The categories of this paper are: hep-ex
24
The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph
29
The categories of this paper are: funct-an
34
The categories of this paper are: chem-ph
25
The categories of this paper are: patt-sol
18
The categories of this paper are: econ
4
The categories of this paper are: cond-mat
2
The categories of this paper are: math
32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg
23
The categories of this paper are: solv-int
12
The categories of this paper are: nucl-th