Constraints on millicharged dark matter and axionlike particles from timing of radio waves

Andrea Caputo; Laura Sberna; Miguel Frías; Diego Blas; Paolo Pani; Lijing Shao; Wenming Yan

doi:10.1103/PhysRevD.100.063515

Constraints on millicharged dark matter and axionlike particles from timing of radio waves

Andrea Caputo, Laura Sberna, Miguel Frías, Diego Blas, Paolo Pani, Lijing Shao, Wenming Yan

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Abstract

We derive constraints on millicharged dark matter and axionlike particles using pulsar timing and fast radio burst observations. For dark matter particles of charge ϵe, the constraint from time of arrival (TOA) of waves is ϵ/mmilli 10-8 eV-1, for masses mmilli 10-6 eV. For axionlike particles, the polarization of the signals from pulsars yields a bound in the axial coupling g/ma 10-13 GeV-1/(10-22 eV), for ma 10-19 eV. Both bounds scale as (ρ/ρdm)1/2 for fractions of the total dark matter energy density ρdm. We make a precise study of these bounds using TOA from several pulsars, FRB 121102, and polarization measurements of PSR J0437-4715. Our results rule out a new region of the parameter space for these dark matter models.

Original language	English
Article number	063515
Journal	Physical Review D
Volume	100
Issue number	6
Early online date	16 Sept 2019
DOIs	https://doi.org/10.1103/PhysRevD.100.063515
Publication status	Published - Sept 2019

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Constraints on millicharged dark_CAPUTO_Acc22Aug2019_Epub 16Sept2019_GREEN AAMAccepted author manuscript, 414 KB

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abstract = "We derive constraints on millicharged dark matter and axionlike particles using pulsar timing and fast radio burst observations. For dark matter particles of charge ϵe, the constraint from time of arrival (TOA) of waves is ϵ/mmilli 10-8 eV-1, for masses mmilli 10-6 eV. For axionlike particles, the polarization of the signals from pulsars yields a bound in the axial coupling g/ma 10-13 GeV-1/(10-22 eV), for ma 10-19 eV. Both bounds scale as (ρ/ρdm)1/2 for fractions of the total dark matter energy density ρdm. We make a precise study of these bounds using TOA from several pulsars, FRB 121102, and polarization measurements of PSR J0437-4715. Our results rule out a new region of the parameter space for these dark matter models.",

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AU - Caputo, Andrea

AU - Sberna, Laura

AU - Frías, Miguel

AU - Blas, Diego

AU - Pani, Paolo

AU - Shao, Lijing

AU - Yan, Wenming

PY - 2019/9

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Constraints on millicharged dark matter and axionlike particles from timing of radio waves

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