Title: Localizing gravitational wave sources with single-baseline atom interferometers

Abstract

Localizing sources on the sky is crucial for realizing the full potential of gravitational waves for astronomy, astrophysics, and cosmology. Here in this paper, we show that the midfrequency band, roughly 0.03 to 10 Hz, has significant potential for angular localization. The angular location is measured through the changing Doppler shift as the detector orbits the Sun. This band maximizes the effect since these are the highest frequencies in which sources live for several months. Atom interferometer detectors can observe in the midfrequency band, and even with just a single baseline they can exploit this effect for sensitive angular localization. The single-baseline orbits around the Earth and the Sun, causing it to reorient and change position significantly during the lifetime of the source, and making it similar to having multiple baselines/detectors. For example, atomic detectors could predict the location of upcoming black hole or neutron star merger events with sufficient accuracy to allow optical and other electromagnetic telescopes to observe these events simultaneously. Thus, midband atomic detectors are complementary to other gravitational wave detectors and will help complete the observation of a broad range of the gravitational spectrum.

Authors:

Graham, Peter W. ^[1]; Jung, Sunghoon ^[2]

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+ Show Author Affiliations

1. Stanford Univ., CA (United States). Stanford Inst. for Theoretical Physics, Dept. of Physics
2. Seoul National Univ. (Korea, Republic of). Center for Theoretical Physics, Dept. of Physics and Astronomy; SLAC National Accelerator Lab., Menlo Park, CA (United States)

Publication Date:

2018-01-31

Research Org.:

SLAC National Accelerator Lab., Menlo Park, CA (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1424722

Alternate Identifier(s):

OSTI ID: 1418876

Grant/Contract Number:  

PHY-1720397; SC0012012; AC02-76SF00515; 2017R1D1A1B03030820

Resource Type:

Accepted Manuscript

Journal Name:

Physical Review D

Additional Journal Information:

Journal Volume: 97; Journal Issue: 2; Journal ID: ISSN 2470-0010

Publisher:

American Physical Society (APS)

Country of Publication:

United States

Language:

English

Subject:

79 ASTRONOMY AND ASTROPHYSICS; Gravitational wave detection; Gravitational waves