Neutron stars and Pulsar timing arrays as Axion giant gyroscopes
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| Format: | Preprint |
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2024
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| _version_ | 1866910495212044288 |
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| author | Liu, Yiming Luo, Jinneng Sun, Sichun |
| author_facet | Liu, Yiming Luo, Jinneng Sun, Sichun |
| contents | We consider the three-dimensional rotating motions of neutron stars blown by the "axion wind". Neutron star precession and spin can change from the magnetic moment coupling to the oscillating axion background field, in analogy to the gyroscope motions with a driving force and the laboratory Nuclear Magnetic Resonance(NMR) detections of the axion. This effect modulates the pulse arrival time of the pulsar timing arrays. It shows up as a signal on the timing residual and two-point correlation function on the recent data of Nanograv and PPTA. The current measurement of PTAs can thus cast constraints on the axion-nucleon coupling as g_{ann} ~ 10^{-12}{GeV}^{-1}. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2406_13480 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Neutron stars and Pulsar timing arrays as Axion giant gyroscopes Liu, Yiming Luo, Jinneng Sun, Sichun Cosmology and Nongalactic Astrophysics High Energy Physics - Phenomenology We consider the three-dimensional rotating motions of neutron stars blown by the "axion wind". Neutron star precession and spin can change from the magnetic moment coupling to the oscillating axion background field, in analogy to the gyroscope motions with a driving force and the laboratory Nuclear Magnetic Resonance(NMR) detections of the axion. This effect modulates the pulse arrival time of the pulsar timing arrays. It shows up as a signal on the timing residual and two-point correlation function on the recent data of Nanograv and PPTA. The current measurement of PTAs can thus cast constraints on the axion-nucleon coupling as g_{ann} ~ 10^{-12}{GeV}^{-1}. |
| title | Neutron stars and Pulsar timing arrays as Axion giant gyroscopes |
| topic | Cosmology and Nongalactic Astrophysics High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2406.13480 |