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  Upper limits on the rates of binary neutron star and neutron-star--black-hole mergers from Advanced LIGO's first observing run

The LIGO Scientific Collaboration, The Virgo Collaboration, Abbott, B. P., Abbott, R., Abbott, T. D., Abernathy, M. R., et al. (2016). Upper limits on the rates of binary neutron star and neutron-star--black-hole mergers from Advanced LIGO's first observing run. The Astrophysical Journal Letters, 832(2): L21. doi:10.3847/2041-8205/832/2/L21.

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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
Acernese, F., Autor
Ackley, K., Autor
Adams, C., Autor
Adams, T., Autor
Addesso, P., Autor
Adhikari, R. X., Autor
Adya, V. B.1, Autor
Affeldt, C.1, Autor           
Agathos, M., Autor
Agatsuma, K., Autor
Aggarwal, N., Autor
Aguiar, O. D., Autor
Aiello, L., Autor
Ain, A., 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              
4AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, Hannover, DE, ou_24009              
5Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_24013              

Inhalt

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Schlagwörter: Astrophysics, High Energy Astrophysical Phenomena, astro-ph.HE,Astrophysics, Cosmology and Extragalactic Astrophysics, astro-ph.CO,General Relativity and Quantum Cosmology, gr-qc
 Zusammenfassung: We report here the non-detection of gravitational waves from the merger of
binary neutron star systems and neutron-star--black-hole systems during the
first observing run of Advanced LIGO. In particular we searched for
gravitational wave signals from binary neutron star systems with component
masses $\in [1,3] M_{\odot}$ and component dimensionless spins $< 0.05$. We
also searched for neutron-star--black-hole systems with the same neutron star
parameters, black hole mass $\in [2,99] M_{\odot}$ and no restriction on the
black hole spin magnitude. We assess the sensitivity of the two LIGO detectors
to these systems, and find that they could have detected the merger of binary
neutron star systems with component mass distributions of $1.35\pm0.13
M_{\odot}$ at a volume-weighted average distance of $\sim$ 70Mpc, and for
neutron-star--black-hole systems with neutron star masses of $1.4M_\odot$ and
black hole masses of at least $5M_\odot$, a volume-weighted average distance of
at least $\sim$ 110Mpc. From this we constrain with 90% confidence the merger
rate to be less than 12,600 Gpc$^{-3}$yr$^{-1}$ for binary-neutron star systems
and less than 3,600 Gpc$^{-3}$yr$^{-1}$ for neutron-star--black-hole systems.
We find that if no detection of neutron-star binary mergers is made in the next
two Advanced LIGO and Advanced Virgo observing runs we would place significant
constraints on the merger rates. Finally, assuming a rate of
$10^{+20}_{-7}$Gpc$^{-3}$yr$^{-1}$ short gamma ray bursts beamed towards the
Earth and assuming that all short gamma-ray bursts have binary-neutron-star
(neutron-star--black-hole) progenitors we can use our 90% confidence rate upper
limits to constrain the beaming angle of the gamma-ray burst to be greater than
${2.3^{+1.7}_{-1.1}}^{\circ}$ (${4.3^{+3.1}_{-1.9}}^{\circ}$).

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 Datum: 2016-07-252016
 Publikationsstatus: Erschienen
 Seiten: 17 pages, 8 figures
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
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Titel: The Astrophysical Journal Letters
Genre der Quelle: Zeitschrift
 Urheber:
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Seiten: - Band / Heft: 832 (2) Artikelnummer: L21 Start- / Endseite: - Identifikator: -