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Has NANOGrav found first evidence for cosmic strings?
The North American Nanohertz Observatory for Gravitational Waves has recently reported strong evidence for a stochastic common-spectrum process affecting the pulsar timing residuals in its 12.5-year data set. We demonstrate that this process admits an interpretation in terms of a stochastic gravitat...
| Autores principales: | , , |
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| Lenguaje: | eng |
| Publicado: |
2020
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1103/PhysRevLett.126.041305 http://cds.cern.ch/record/2730516 |
| _version_ | 1780966484508409856 |
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| author | Blasi, Simone Brdar, Vedran Schmitz, Kai |
| author_facet | Blasi, Simone Brdar, Vedran Schmitz, Kai |
| author_sort | Blasi, Simone |
| collection | CERN |
| description | The North American Nanohertz Observatory for Gravitational Waves has recently reported strong evidence for a stochastic common-spectrum process affecting the pulsar timing residuals in its 12.5-year data set. We demonstrate that this process admits an interpretation in terms of a stochastic gravitational-wave background emitted by a cosmic-string network in the early Universe. We study stable Nambu-Goto strings in dependence of their tension Gμ and loop size α and show that the entire viable parameter space will be probed by an array of future experiments. |
| id | cern-2730516 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2020 |
| record_format | invenio |
| spelling | cern-27305162023-10-04T08:18:49Zdoi:10.1103/PhysRevLett.126.041305http://cds.cern.ch/record/2730516engBlasi, SimoneBrdar, VedranSchmitz, KaiHas NANOGrav found first evidence for cosmic strings?hep-thParticle Physics - Theoryhep-phParticle Physics - Phenomenologygr-qcGeneral Relativity and Cosmologyastro-ph.COAstrophysics and AstronomyThe North American Nanohertz Observatory for Gravitational Waves has recently reported strong evidence for a stochastic common-spectrum process affecting the pulsar timing residuals in its 12.5-year data set. We demonstrate that this process admits an interpretation in terms of a stochastic gravitational-wave background emitted by a cosmic-string network in the early Universe. We study stable Nambu-Goto strings in dependence of their tension Gμ and loop size α and show that the entire viable parameter space will be probed by an array of future experiments.The North American Nanohertz Observatory for Gravitational Waves (NANOGrav) has recently reported strong evidence for a stochastic common-spectrum process affecting the pulsar timing residuals in its 12.5-year data set. We demonstrate that this process admits an interpretation in terms of a stochastic gravitational-wave background emitted by a cosmic-string network in the early Universe. We study stable Nambu-Goto strings in dependence of their tension $G\mu$ and loop size $\alpha$ and show that the entire viable parameter space will be probed by an array of future experiments.arXiv:2009.06607CERN-TH-2020-151oai:cds.cern.ch:27305162020-09-14 |
| spellingShingle | hep-th Particle Physics - Theory hep-ph Particle Physics - Phenomenology gr-qc General Relativity and Cosmology astro-ph.CO Astrophysics and Astronomy Blasi, Simone Brdar, Vedran Schmitz, Kai Has NANOGrav found first evidence for cosmic strings? |
| title | Has NANOGrav found first evidence for cosmic strings? |
| title_full | Has NANOGrav found first evidence for cosmic strings? |
| title_fullStr | Has NANOGrav found first evidence for cosmic strings? |
| title_full_unstemmed | Has NANOGrav found first evidence for cosmic strings? |
| title_short | Has NANOGrav found first evidence for cosmic strings? |
| title_sort | has nanograv found first evidence for cosmic strings? |
| topic | hep-th Particle Physics - Theory hep-ph Particle Physics - Phenomenology gr-qc General Relativity and Cosmology astro-ph.CO Astrophysics and Astronomy |
| url | https://dx.doi.org/10.1103/PhysRevLett.126.041305 http://cds.cern.ch/record/2730516 |
| work_keys_str_mv | AT blasisimone hasnanogravfoundfirstevidenceforcosmicstrings AT brdarvedran hasnanogravfoundfirstevidenceforcosmicstrings AT schmitzkai hasnanogravfoundfirstevidenceforcosmicstrings |