Axion dark matter from first-order phase transition, and very high energy photons from GRB 221009A

Abstract

We study an axion-like particle (ALP) that experiences the first-order phase transition with respect to its mass or potential minimum. This can be realized if the ALP obtains a potential from non-perturbative effects of SU($N$) gauge theory that is confined via the first-order phase transition, or if the ALP is trapped in a false vacuum at high temperatures until it starts to oscillate about the true minimum. The resulting ALP abundance is significantly enhanced compared to the standard misalignment mechanism, explaining dark matter in a broader parameter space that is accessible to experiments e.g. IAXO, ALPS-II, and DM-radio. Furthermore, the viable parameter space includes a region of the mass $m_a\simeq 10^{-7}-10^{-8}$ eV and the ALP-photon coupling $g_{a\gamma \gamma }\simeq 10^{-11}{\mathrm{GeV}}^{-1}$ that can explain the recent observation of very high energy photons from GRB221009A via axion-photon oscillations. The parameter region suggests that the FOPT can generate the gravitational wave that explains the NANOGrav hint. If the ALP in this region explains dark matter, then the ALP has likely experienced a first-order phase transition.

7 pages, 1 figure

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Cited by in corpus (25)

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• Implication of nano-Hertz stochastic gravitational wave on dynamical dark matter through a dark first-order phase transition
• Invisible Neutrino Decays as Origin of TeV Gamma Rays from GRB221009A
• Axion-photon conversion of GRB221009A
• GRB 221009A Gamma Rays from Radiative Decay of Heavy Neutrinos?
• The QCD Axion: A Unique Player in the Axiverse with Mixings
• Revisiting Lorentz invariance violation from GRB 221009A
• Towards a model of photon-axion conversion in the host galaxy of GRB 221009A
• Resonant production of dark photons from axion without a large coupling
• Carpet-3 detection of a photon-like air shower with estimated primary energy above 100 TeV in a spatial and temporal coincidence with GRB 221009A
• Light scalar explanation for 18 TeV GRB 221009A
• Can Sterile Neutrino Explain Very High Energy Photons from GRB221009A?
• Stochastic gravitational wave background: birth from string-wall death
• Lorentz invariance violation from GRB221009A
• Observing axions through photon ring dimming of black holes
• Very high-energy gamma rays from GRB 180720B and GRB 190829A with external Compton emission
• Prospects for detection rate of very-high-energy γ-ray emissions from short γ-ray bursts with the HADAR experiment
• Resolving the QCD Axion Domain Wall Problem with a Light Axion
• Polarization Measurements as a Probe of Axion-Photon Coupling: a Study of GRB 221009A
• The possibility of multi-TeV secondary gamma rays from GRB221009A
• A photohadronic interpretation of the H.E.S.S. afterglow observations from GRB 221009A
• Modeling the imprints of large-scale magnetized structures on $\gamma$-rays from extragalactic transients
• Photon Ring Dimming as a Signature of Photon-Axion Conversion in Janis-Newman-Winicour Naked Singularity
• Axion-like Particles and their Possible Impact on the Very High-Energy Spectrum of M87 Observed by LHAASO