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  First search for nontensorial gravitational waves from known pulsars

The LIGO Scientific Collaboration, The Virgo Collaboration, Abbott, B. P., Abbott, R., Abbott, T. D., Abernathy, M. R., et al. (2018). First search for nontensorial gravitational waves from known pulsars. Physical Review Letters, 120: 031104. doi:10.1103/PhysRevLett.120.031104.

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The LIGO Scientific Collaboration, Autor              
The Virgo Collaboration, Autor              
Abbott, B. P., Autor
Abbott, R., Autor
Abbott, T. D., Autor
Abernathy, M. R., Autor
Ackley, K., Autor
Adams, C., Autor
Addesso, P., Autor
Adhikari, R. X., Autor
Adya, V. B., Autor
Affeldt, C.1, Autor           
Aggarwal, N., Autor
Aguiar, O. D., Autor
Ain, A., Autor
Ajith, P., Autor
Allen, B.2, Autor           
Altin, P. A., Autor
Amariutei, D. V., Autor
Anderson, S. B., Autor
mehr..
Affiliations:
1Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24010              
2Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24011              
3Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_1933290              
4Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_24013              

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 Zusammenfassung: We present results from the first directed search for nontensorial gravitational waves. While general relativity allows for tensorial (plus and cross) modes only, a generic metric theory may, in principle, predict waves with up to six different polarizations. This analysis is sensitive to continuous signals of scalar, vector, or tensor polarizations, and does not rely on any specific theory of gravity. After searching data from the first observation run of the advanced LIGO detectors for signals at twice the rotational frequency of 200 known pulsars, we find no evidence of gravitational waves of any polarization. We report the first upper limits for scalar and vector strains, finding values comparable in magnitude to previously published limits for tensor strain. Our results may be translated into constraints on specific alternative theories of gravity.

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 Datum: 20172018
 Publikationsstatus: Erschienen
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Titel: Physical Review Letters
  Kurztitel : Phys. Rev. Lett.
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Woodbury, N.Y. : American Physical Society
Seiten: - Band / Heft: 120 Artikelnummer: 031104 Start- / Endseite: - Identifikator: ISSN: 0031-9007
CoNE: https://pure.mpg.de/cone/journals/resource/954925433406_1