Pulsar timing residual induced by wideband ultralight dark matter with spin 0,1,2

Sun, S.; Yang, Xing-Yu; Zhang, Yun-Long

doi:10.1103/physrevd.106.066006

Cited by 15 publications

(6 citation statements)

References 107 publications

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“…For example, there have been some attempts to consider the spin-2 matter as dark matter [33][34][35][36][37]. Moreover, the pulsar timing residual has been calculated with higher spin fields [38][39][40]. The higher spin fields should produce different angular correlation patterns, which can be used to constrain them.…”

Section: Discussionmentioning

confidence: 99%

Hellings-Downs curve deformed by ultralight vector dark matter

Omiya,

Nomura,

Soda

2023

Phys. Rev. D

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Pulsar timing arrays (PTAs) provide a way to detect gravitational waves (GWs) at nanohertz frequencies. To ensure the detection of GWs, observational data must exhibit the Hellings-Downs angular correlation. It is also known that PTAs can probe ultralight dark matter. This paper considers possible contamination of the Hellings-Downs angular correlation by the ultralight dark matter. We find that ultralight vector dark matter can give rise to the deformation of the Hellings-Downs correlation curve. Thus, the Hellings-Downs correlation curve could contain information on ultralight dark matter with a spin.

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Section: Discussionmentioning

confidence: 99%

Hellings-Downs curve deformed by ultralight vector dark matter

Omiya,

Nomura,

Soda

2023

Phys. Rev. D

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“…One unique aspect of tensor dark matter is that it naturally couples to SM fields without manually adding a fifth force to mimic the modification of gravity. The coupling effect on PTA has been has been investigated in previous studies [44,49,50]. Our present study instead focuses on providing the first comprehensive analysis of the gravitational effect of tensor dark matter on PTA.…”

Section: Introductionmentioning

confidence: 99%

Pulsar timing residual induced by ultralight tensor dark matter

Wu,

Chen,

Huang

2023

J. Cosmol. Astropart. Phys.

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Ultralight boson fields, with a mass around 10-23 eV, are promising candidates for the elusive cosmological dark matter. These fields induce a periodic oscillation of the spacetime metric in the nanohertz frequency band, which is detectable by pulsar timing arrays. In this paper, we investigate the gravitational effect of ultralight tensor dark matter on the arrival time of radio pulses from pulsars. We find that the pulsar timing signal caused by tensor dark matter exhibits a different angular dependence than that by scalar and vector dark matter, making it possible to distinguish the ultralight dark matter signal with different spins. Combining the gravitational effect and the coupling effect of ultralight tensor dark matter with standard model matter provides a complementary way to constrain the coupling parameter α. We estimate α ≲ 10-6 ∼ 10-5 in the mass range m < 5 × 10-23 eV with current pulsar timing array.

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“…They can bind in binary systems which leads to late time merging and radiation of gravitational waves in the nHz frequency range that are detectable by pulsar timing array (PTA) experiments [37][38][39][40][41][42][43]. The results from the PTA observations have been extensively analyzed and interpreted in numerous studies, including recent ones such as and earlier analyses such as [114][115][116][117][118][119][120][121][122][123][124][125][126], which are related to the previously published NANOGrav signal evidence [127]. These interpretations and effects may independently explain the PTA gravitational wave signal.…”

Section: Introductionmentioning

confidence: 99%

Primordial Black Holes from Spatially Varying Cosmological Constant Induced by Field Fluctuations in Extra Dimensions

Popov,

Rubin,

Sakharov

2024

Universe

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The origin and evolution of supermassive black holes (SMBHs) in our universe have sparked controversy. In this study, we explore the hypothesis that some of these black holes may have seeded from the direct collapse of dark energy domains with density significantly higher than the surrounding regions. The mechanism of the origin of such domains relies on the inflationary evolution of a scalar field acting in D dimensions, which is associated with the cosmological constant in our four-dimensional spacetime manifold. Inner space quantum fluctuations of the field during inflation are responsible for the spatial variations of the dark energy density in our space. This finding holds particular significance, especially considering recent evidence from pulsar timing array observations, which supports the existence of a stochastic gravitational wave background consisting of SMBH mergers.

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Pulsar timing residual induced by wideband ultralight dark matter with spin 0,1,2

Cited by 15 publications

References 107 publications

Hellings-Downs curve deformed by ultralight vector dark matter

Hellings-Downs curve deformed by ultralight vector dark matter

Pulsar timing residual induced by ultralight tensor dark matter

Primordial Black Holes from Spatially Varying Cosmological Constant Induced by Field Fluctuations in Extra Dimensions

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