4.5 Article

Search for electron-antineutrinos associated with gravitational-wave events GW150914, GW151012, GW151226, GW170104, GW170608, GW170814, and GW170817 at Daya Bay *

Journal

CHINESE PHYSICS C
Volume 45, Issue 5, Pages -

Publisher

IOP Publishing Ltd
DOI: 10.1088/1674-1137/abe84b

Keywords

gravitational waves; electron-antineutrinos; fluence; upper limit

Funding

  1. Ministry of Science and Technology of China
  2. U.S. Department of Energy
  3. Chinese Academy of Sciences
  4. CAS Center for Excellence in Particle Physics
  5. National Natural Science Foundation of China
  6. Guangdong provincial government
  7. Shenzhen municipal government
  8. China General Nuclear Power Group, Key Laboratory of Particle and Radiation Imaging (Tsinghua University)
  9. Ministry of Education, Key Laboratory of Particle Physics and Particle Irradiation (Shandong University)
  10. Research Grants Council of the Hong Kong Special Administrative Region of China
  11. University Development Fund of the University of Hong Kong
  12. MOE program for Research of Excellence at National Taiwan University
  13. National Chiao-Tung University
  14. NSC
  15. U.S. National Science Foundation
  16. Alfred P. Sloan Foundation
  17. Ministry of Education, Youth, and Sports of the Czech Republic
  18. Charles University GAUK [284317]
  19. Joint Institute of Nuclear Research in Dubna, Russia
  20. National Commission of Scientific and Technological Research of Chile
  21. Tsinghua University Initiative Scientific Research Program
  22. Ministry of Education, Shanghai Laboratory for Particle Physics and Cosmology

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In the Daya Bay experiment, a search was conducted for electron-antineutrino signals that coincided with detected GW events from December 2011 to August 2017. Upper limits of the electron-antineutrino fluence were found for different time windows based on the assumption of monochromatic or Fermi-Dirac spectra.
The establishment of a possible connection between neutrino emission and gravitational-wave (GW) bursts is important to our understanding of the physical processes that occur when black holes or neutron stars merge. In the Daya Bay experiment, using the data collected from December 2011 to August 2017, a search was performed for electron-antineutrino signals that coincided with detected GW events, including GW150914, GW151012, GW151226, GW170104, GW170608, GW170814, and GW170817. We used three time windows of +/- 10, +/- 500, and +/- 1000 s relative to the occurrence of the GW events and a neutrino energy range of 1.8 to 100 MeV to search for correlated neutrino candidates. The detected electron-antineutrino candidates were consistent with the expected background rates for all the three time windows. Assuming monochromatic spectra, we found upper limits (90% confidence level) of the electron-antineutrino fluence of (1.13 - 2.44)x10(11) cm(-2) at 5 MeV to 8.0x10(7) cm(-2) at 100 MeV for the three time windows. Under the assumption of a Fermi-Dirac spectrum, the upper limits were found to be (5.4 - 7.0)x10(9) cm(-2) for the three time windows.

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