Octahedron configuration for a displacement noise-cancelling gravitational wave detector in space

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Autoren

  • Yan Wang
  • David Keitel
  • Stanislav Babak
  • Antoine Petiteau
  • Markus Otto
  • Simon Barke
  • Fumiko Kawazoe
  • Alexander Khalaidovski
  • Vitali Müller
  • Daniel Schütze
  • Holger Wittel
  • Karsten Danzmann
  • Bernard F. Schutz

Externe Organisationen

  • Université de Paris
  • Max-Planck-Institut für Gravitationsphysik (Albert-Einstein-Institut), Potsdam
  • Max-Planck-Institut für Gravitationsphysik (Albert-Einstein-Institut)
Forschungs-netzwerk anzeigen

Details

OriginalspracheEnglisch
Aufsatznummer104021
FachzeitschriftPhysical Review D - Particles, Fields, Gravitation and Cosmology
Jahrgang88
Ausgabenummer10
PublikationsstatusVeröffentlicht - 15 Nov. 2013
Extern publiziertJa

Abstract

We study for the first time a three-dimensional octahedron constellation for a space-based gravitational wave detector, which we call the octahedral gravitational observatory (OGO). With six spacecraft the constellation is able to remove laser frequency noise and acceleration disturbances from the gravitational wave signal without needing LISA-like drag-free control, thereby simplifying the payloads and placing less stringent demands on the thrusters. We generalize LISA's time-delay interferometry to displacement-noise free interferometry (DFI) by deriving a set of generators for those combinations of the data streams that cancel laser and acceleration noise. However, the three-dimensional configuration makes orbit selection complicated. So far, only a halo orbit near the Lagrangian point L1 has been found to be stable enough, and this allows only short arms up to 1400 km. We derive the sensitivity curve of OGO with this arm length, resulting in a peak sensitivity of about 2×10-23 Hz-1/2 near 100 Hz. We compare this version of OGO to the present generation of ground-based detectors and to some future detectors. We also investigate the scientific potentials of such a detector, which include observing gravitational waves from compact binary coalescences, the stochastic background, and pulsars as well as the possibility to test alternative theories of gravity. We find a mediocre performance level for this short arm length detector, between those of initial and advanced ground-based detectors. Thus, actually building a space-based detector of this specific configuration does not seem very efficient. However, when alternative orbits that allow for longer detector arms can be found, a detector with much improved science output could be constructed using the octahedron configuration and DFI solutions demonstrated in this paper. Also, since the sensitivity of a DFI detector is limited mainly by shot noise, we discuss how the overall sensitivity could be improved by using advanced technologies that reduce this particular noise source.

ASJC Scopus Sachgebiete

Zitieren

Octahedron configuration for a displacement noise-cancelling gravitational wave detector in space. / Wang, Yan; Keitel, David; Babak, Stanislav et al.
in: Physical Review D - Particles, Fields, Gravitation and Cosmology, Jahrgang 88, Nr. 10, 104021, 15.11.2013.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Wang, Y, Keitel, D, Babak, S, Petiteau, A, Otto, M, Barke, S, Kawazoe, F, Khalaidovski, A, Müller, V, Schütze, D, Wittel, H, Danzmann, K & Schutz, BF 2013, 'Octahedron configuration for a displacement noise-cancelling gravitational wave detector in space', Physical Review D - Particles, Fields, Gravitation and Cosmology, Jg. 88, Nr. 10, 104021. https://doi.org/10.1103/PhysRevD.88.104021
Wang, Y., Keitel, D., Babak, S., Petiteau, A., Otto, M., Barke, S., Kawazoe, F., Khalaidovski, A., Müller, V., Schütze, D., Wittel, H., Danzmann, K., & Schutz, B. F. (2013). Octahedron configuration for a displacement noise-cancelling gravitational wave detector in space. Physical Review D - Particles, Fields, Gravitation and Cosmology, 88(10), Artikel 104021. https://doi.org/10.1103/PhysRevD.88.104021
Wang Y, Keitel D, Babak S, Petiteau A, Otto M, Barke S et al. Octahedron configuration for a displacement noise-cancelling gravitational wave detector in space. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2013 Nov 15;88(10):104021. doi: 10.1103/PhysRevD.88.104021
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title = "Octahedron configuration for a displacement noise-cancelling gravitational wave detector in space",
abstract = "We study for the first time a three-dimensional octahedron constellation for a space-based gravitational wave detector, which we call the octahedral gravitational observatory (OGO). With six spacecraft the constellation is able to remove laser frequency noise and acceleration disturbances from the gravitational wave signal without needing LISA-like drag-free control, thereby simplifying the payloads and placing less stringent demands on the thrusters. We generalize LISA's time-delay interferometry to displacement-noise free interferometry (DFI) by deriving a set of generators for those combinations of the data streams that cancel laser and acceleration noise. However, the three-dimensional configuration makes orbit selection complicated. So far, only a halo orbit near the Lagrangian point L1 has been found to be stable enough, and this allows only short arms up to 1400 km. We derive the sensitivity curve of OGO with this arm length, resulting in a peak sensitivity of about 2×10-23 Hz-1/2 near 100 Hz. We compare this version of OGO to the present generation of ground-based detectors and to some future detectors. We also investigate the scientific potentials of such a detector, which include observing gravitational waves from compact binary coalescences, the stochastic background, and pulsars as well as the possibility to test alternative theories of gravity. We find a mediocre performance level for this short arm length detector, between those of initial and advanced ground-based detectors. Thus, actually building a space-based detector of this specific configuration does not seem very efficient. However, when alternative orbits that allow for longer detector arms can be found, a detector with much improved science output could be constructed using the octahedron configuration and DFI solutions demonstrated in this paper. Also, since the sensitivity of a DFI detector is limited mainly by shot noise, we discuss how the overall sensitivity could be improved by using advanced technologies that reduce this particular noise source.",
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T1 - Octahedron configuration for a displacement noise-cancelling gravitational wave detector in space

AU - Wang, Yan

AU - Keitel, David

AU - Babak, Stanislav

AU - Petiteau, Antoine

AU - Otto, Markus

AU - Barke, Simon

AU - Kawazoe, Fumiko

AU - Khalaidovski, Alexander

AU - Müller, Vitali

AU - Schütze, Daniel

AU - Wittel, Holger

AU - Danzmann, Karsten

AU - Schutz, Bernard F.

PY - 2013/11/15

Y1 - 2013/11/15

N2 - We study for the first time a three-dimensional octahedron constellation for a space-based gravitational wave detector, which we call the octahedral gravitational observatory (OGO). With six spacecraft the constellation is able to remove laser frequency noise and acceleration disturbances from the gravitational wave signal without needing LISA-like drag-free control, thereby simplifying the payloads and placing less stringent demands on the thrusters. We generalize LISA's time-delay interferometry to displacement-noise free interferometry (DFI) by deriving a set of generators for those combinations of the data streams that cancel laser and acceleration noise. However, the three-dimensional configuration makes orbit selection complicated. So far, only a halo orbit near the Lagrangian point L1 has been found to be stable enough, and this allows only short arms up to 1400 km. We derive the sensitivity curve of OGO with this arm length, resulting in a peak sensitivity of about 2×10-23 Hz-1/2 near 100 Hz. We compare this version of OGO to the present generation of ground-based detectors and to some future detectors. We also investigate the scientific potentials of such a detector, which include observing gravitational waves from compact binary coalescences, the stochastic background, and pulsars as well as the possibility to test alternative theories of gravity. We find a mediocre performance level for this short arm length detector, between those of initial and advanced ground-based detectors. Thus, actually building a space-based detector of this specific configuration does not seem very efficient. However, when alternative orbits that allow for longer detector arms can be found, a detector with much improved science output could be constructed using the octahedron configuration and DFI solutions demonstrated in this paper. Also, since the sensitivity of a DFI detector is limited mainly by shot noise, we discuss how the overall sensitivity could be improved by using advanced technologies that reduce this particular noise source.

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DO - 10.1103/PhysRevD.88.104021

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