Constraining time dependent dark matter signals from the Sun

Zakeri, Mohammadreza; Zhou, Yu‐Feng

doi:10.1088/1475-7516/2022/04/026

Cited by 5 publications

(2 citation statements)

References 64 publications

(118 reference statements)

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“…Due to the difference in the core temperature between Jupiter and the Sun, the gamma-ray observation of Jupiter is capable of exploring DM mass in the MeV scale [49], whereas the Sun is limited to DM mass above GeV [44,48]. In addition to gamma-ray telescopes, the time-dependent DM signals can be examined through cosmic ray (CR) telescopes [50].…”

Section: Introductionmentioning

confidence: 99%

Multi-frequency test of dark matter annihilation into long-lived particles in Sirius

Chen¹,

Zu²,

Xia³

et al. 2023

Preprint

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New long-lived particles produced at the colliders may escape from conventional particle detectors.Using satellites or ground telescopes, we can detect the photons generated from the annihilation of the star-captured dark matter into a pair of long-lived particles. When the propagation length of these long-lived particles surpasses the interplanetary distance between the Sun and Jupiter, it becomes unfeasible to detect such dark matter signals originating from the Sun or Jupiter on Earth.Our analysis of the dark matter-induced photons produced by prompt radiation, inverse Compton scattering, and synchrotron radiation mechanisms reveals that a decay length of about 10 −3 pc for long-lived particles is required for maximum detectability. We investigate the parameters that allow the long-lived particle's lifetime to be consistent with Big Bang nucleosynthesis while also allowing it to escape the confines of our solar system. The Sirius system is proposed as a promising target for the indirect detection of such long-lived particles. Utilizing the prompt, inverse Compton scattering, and synchrotron radiation, upper limits on the dark matter-proton spin-independent and spin-dependent cross section are estimated with the Fermi-LAT null-signal observation and the capabilities of the upcoming Square Kilometre Array radio telescope.

show abstract

Section: Introductionmentioning

confidence: 99%

Multi-frequency test of dark matter annihilation into long-lived particles in Sirius

Chen¹,

Zu²,

Xia³

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Due to the difference in the core JCAP08(2023)036 temperature between Jupiter and the Sun, the gamma-ray observation of Jupiter is capable of exploring DM mass in the MeV scale [49], whereas the Sun is limited to DM mass above GeV [44,48]. In addition to gamma-ray telescopes, DM-induced gamma-ray signals from dwarf galaxies can be detected [51] and the time-dependent DM signals can be examined through cosmic ray (CR) telescopes [52].…”

Section: Introductionmentioning

confidence: 99%

Multi-frequency test of dark matter annihilation into long-lived particles in Sirius

Chen

Xia

et al. 2023

J. Cosmol. Astropart. Phys.

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New long-lived particles produced at the colliders may escape from conventional particle detectors. Using satellites or ground telescopes, we can detect the photons generated from the annihilation of the star-captured dark matter into a pair of long-lived particles. When the propagation length of these long-lived particles surpasses the interplanetary distance between the Sun and Jupiter, it becomes unfeasible to detect such dark matter signals originating from the Sun or Jupiter on Earth. Our analysis of the dark matter-induced photons produced by prompt radiation, inverse Compton scattering, and synchrotron radiation mechanisms reveals that a decay length of about 10-3 pc for long-lived particles is required for maximum detectability. We investigate the parameters that allow the long-lived particle's lifetime to be consistent with Big Bang nucleosynthesis while also allowing it to escape the confines of our solar system. The Sirius system is proposed as a promising target for the indirect detection of such long-lived particles. Utilizing the prompt, inverse Compton scattering, and synchrotron radiation, upper limits on the dark matter-proton spin-independent and spin-dependent cross section are estimated with the Fermi-LAT null-signal observation and the capabilities of the upcoming Square Kilometre Array radio telescope.

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Dark matter bound-state formation in the Sun

Chu,

Garani,

García-Cely

et al. 2024

J. High Energ. Phys.

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The Sun may capture asymmetric dark matter (DM), which can subsequently form bound-states through the radiative emission of a sub-GeV scalar. This process enables generation of scalars without requiring DM annihilation. In addition to DM capture on nucleons, the DM-scalar coupling responsible for bound-state formation also induces capture from self-scatterings of ambient DM particles with DM particles already captured, as well as with DM bound-states formed in-situ within the Sun. This scenario is studied in detail by solving Boltzmann equations numerically and analytically. In particular, we take into consideration that the DM self-capture rates require a treatment beyond the conventional Born approximation. We show that, thanks to DM scatterings on bound-states, the number of DM particles captured increases exponentially, leading to enhanced emission of relativistic scalars through bound-state formation, whose final decay products could be observable. We explore phenomenological signatures with the example that the scalar mediator decays to neutrinos. We find that the neutrino flux emitted can be comparable to atmospheric neutrino fluxes within the range of energies below one hundred MeV. Future facilities like Hyper-K, and direct DM detection experiments can further test such scenario.

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Constraining time dependent dark matter signals from the Sun

Cited by 5 publications

References 64 publications

Multi-frequency test of dark matter annihilation into long-lived particles in Sirius

Multi-frequency test of dark matter annihilation into long-lived particles in Sirius

Multi-frequency test of dark matter annihilation into long-lived particles in Sirius

Dark matter bound-state formation in the Sun

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