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Cosmic String Interpretation of NANOGrav Pulsar Timing Data
Pulsar timing data used to provide upper limits on a possible stochastic gravitational wave background (SGWB). However, the NANOGrav Collaboration has recently reported strong evidence for a stochastic common-spectrum process, which we interpret as a SGWB in the framework of cosmic strings. The poss...
| Autores principales: | , |
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| Lenguaje: | eng |
| Publicado: |
2020
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| Acceso en línea: | https://dx.doi.org/10.1103/PhysRevLett.126.041304 http://cds.cern.ch/record/2730515 |
| _version_ | 1780966484292403200 |
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| author | Ellis, John Lewicki, Marek |
| author_facet | Ellis, John Lewicki, Marek |
| author_sort | Ellis, John |
| collection | CERN |
| description | Pulsar timing data used to provide upper limits on a possible stochastic gravitational wave background (SGWB). However, the NANOGrav Collaboration has recently reported strong evidence for a stochastic common-spectrum process, which we interpret as a SGWB in the framework of cosmic strings. The possible NANOGrav signal would correspond to a string tension Gμ∈(4×10-11,10-10) at the 68% confidence level, with a different frequency dependence from supermassive black hole mergers. The SGWB produced by cosmic strings with such values of Gμ would be beyond the reach of LIGO, but could be measured by other planned and proposed detectors such as SKA, LISA, TianQin, AION-1 km, AEDGE, Einstein Telescope, and Cosmic Explorer. |
| id | cern-2730515 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2020 |
| record_format | invenio |
| spelling | cern-27305152023-10-04T06:35:10Zdoi:10.1103/PhysRevLett.126.041304http://cds.cern.ch/record/2730515engEllis, JohnLewicki, MarekCosmic String Interpretation of NANOGrav Pulsar Timing Datahep-phParticle Physics - Phenomenologygr-qcGeneral Relativity and Cosmologyastro-ph.HEAstrophysics and Astronomyastro-ph.COAstrophysics and Astronomyhep-thParticle Physics - TheoryPulsar timing data used to provide upper limits on a possible stochastic gravitational wave background (SGWB). However, the NANOGrav Collaboration has recently reported strong evidence for a stochastic common-spectrum process, which we interpret as a SGWB in the framework of cosmic strings. The possible NANOGrav signal would correspond to a string tension Gμ∈(4×10-11,10-10) at the 68% confidence level, with a different frequency dependence from supermassive black hole mergers. The SGWB produced by cosmic strings with such values of Gμ would be beyond the reach of LIGO, but could be measured by other planned and proposed detectors such as SKA, LISA, TianQin, AION-1 km, AEDGE, Einstein Telescope, and Cosmic Explorer.Pulsar timing data used to provide upper limits on a possible stochastic gravitational wave background (SGWB). However, the NANOGrav Collaboration has recently reported strong evidence for a stochastic common-spectrum process, which we interpret as a SGWB in the framework of cosmic strings. The possible NANOGrav signal would correspond to a string tension $G\mu \in (4 \times 10^{-11}, 10^{-10}) $ at the 68% confidence level, with a different frequency dependence from supermassive black hole mergers. The SGWB produced by cosmic strings with such values of $G\mu$ would be beyond the reach of LIGO, but could be measured by other planned and proposed detectors such as SKA, LISA, TianQin, AION-1km, AEDGE, Einstein Telescope and Cosmic Explorer.arXiv:2009.06555KCL-PH-TH/2020-53CERN-TH-2020-150oai:cds.cern.ch:27305152020-09-14 |
| spellingShingle | hep-ph Particle Physics - Phenomenology gr-qc General Relativity and Cosmology astro-ph.HE Astrophysics and Astronomy astro-ph.CO Astrophysics and Astronomy hep-th Particle Physics - Theory Ellis, John Lewicki, Marek Cosmic String Interpretation of NANOGrav Pulsar Timing Data |
| title | Cosmic String Interpretation of NANOGrav Pulsar Timing Data |
| title_full | Cosmic String Interpretation of NANOGrav Pulsar Timing Data |
| title_fullStr | Cosmic String Interpretation of NANOGrav Pulsar Timing Data |
| title_full_unstemmed | Cosmic String Interpretation of NANOGrav Pulsar Timing Data |
| title_short | Cosmic String Interpretation of NANOGrav Pulsar Timing Data |
| title_sort | cosmic string interpretation of nanograv pulsar timing data |
| topic | hep-ph Particle Physics - Phenomenology gr-qc General Relativity and Cosmology astro-ph.HE Astrophysics and Astronomy astro-ph.CO Astrophysics and Astronomy hep-th Particle Physics - Theory |
| url | https://dx.doi.org/10.1103/PhysRevLett.126.041304 http://cds.cern.ch/record/2730515 |
| work_keys_str_mv | AT ellisjohn cosmicstringinterpretationofnanogravpulsartimingdata AT lewickimarek cosmicstringinterpretationofnanogravpulsartimingdata |