Constraints on conformal ultralight dark matter couplings from the European Pulsar Timing Array
Fuente:
arXiv
Salvato in:
| Autori principali: | , , , , , , , , , , , , , , , , , |
|---|---|
| Natura: | Preprint |
| Pubblicazione: |
2024
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1866929553028415488 |
|---|---|
| author | Smarra, Clemente Kuntz, Adrien Barausse, Enrico Goncharov, Boris Nacir, Diana López Blas, Diego Shao, Lijing Antoniadis, J. Champion, D. J. Cognard, I. Guillemot, L. Hu, H. Keith, M. Kramer, M. Liu, K. Perrodin, D. Sanidas, S. A. Theureau, G. |
| author_facet | Smarra, Clemente Kuntz, Adrien Barausse, Enrico Goncharov, Boris Nacir, Diana López Blas, Diego Shao, Lijing Antoniadis, J. Champion, D. J. Cognard, I. Guillemot, L. Hu, H. Keith, M. Kramer, M. Liu, K. Perrodin, D. Sanidas, S. A. Theureau, G. |
| contents | Millisecond pulsars are extremely precise celestial clocks: as they rotate, the beamed radio waves emitted along the axis of their magnetic field can be detected with radio telescopes, which allows for tracking subtle changes in the pulsars' rotation periods. A possible effect on the period of a pulsar is given by a potential coupling to dark matter, in cases where it is modeled with an "ultralight" scalar field. In this paper, we consider a universal conformal coupling of the dark matter scalar to gravity, which in turn mediates an effective coupling between pulsars and dark matter. If the dark matter scalar field is changing in time, as expected in the Milky Way, this effective coupling produces a periodic modulation of the pulsar rotational frequency. By studying the time series of observed radio pulses collected by the European Pulsar Timing Array experiment, we present constraints on the coupling of dark matter, improving on existing bounds. These bounds can also be regarded as constraints on the parameters of scalar-tensor theories of the Fierz-Jordan-Brans-Dicke and Damour-Esposito-Farèse types in the presence of a (light) mass potential term. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_01633 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Constraints on conformal ultralight dark matter couplings from the European Pulsar Timing Array Smarra, Clemente Kuntz, Adrien Barausse, Enrico Goncharov, Boris Nacir, Diana López Blas, Diego Shao, Lijing Antoniadis, J. Champion, D. J. Cognard, I. Guillemot, L. Hu, H. Keith, M. Kramer, M. Liu, K. Perrodin, D. Sanidas, S. A. Theureau, G. High Energy Astrophysical Phenomena Cosmology and Nongalactic Astrophysics Astrophysics of Galaxies General Relativity and Quantum Cosmology High Energy Physics - Phenomenology Millisecond pulsars are extremely precise celestial clocks: as they rotate, the beamed radio waves emitted along the axis of their magnetic field can be detected with radio telescopes, which allows for tracking subtle changes in the pulsars' rotation periods. A possible effect on the period of a pulsar is given by a potential coupling to dark matter, in cases where it is modeled with an "ultralight" scalar field. In this paper, we consider a universal conformal coupling of the dark matter scalar to gravity, which in turn mediates an effective coupling between pulsars and dark matter. If the dark matter scalar field is changing in time, as expected in the Milky Way, this effective coupling produces a periodic modulation of the pulsar rotational frequency. By studying the time series of observed radio pulses collected by the European Pulsar Timing Array experiment, we present constraints on the coupling of dark matter, improving on existing bounds. These bounds can also be regarded as constraints on the parameters of scalar-tensor theories of the Fierz-Jordan-Brans-Dicke and Damour-Esposito-Farèse types in the presence of a (light) mass potential term. |
| title | Constraints on conformal ultralight dark matter couplings from the European Pulsar Timing Array |
| topic | High Energy Astrophysical Phenomena Cosmology and Nongalactic Astrophysics Astrophysics of Galaxies General Relativity and Quantum Cosmology High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2405.01633 |