Axions and the Final Fate of Stars

Domı́nguez, I.; Straniero, O.; Giannotti, Maurizio; Mirizzi, Alessandro

doi:10.1007/978-3-030-13876-9_24

Cited by 3 publications

(4 citation statements)

References 27 publications

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“…Furthermore, axions may have observable effects on the late evolutionary stages of massive stars, for example influencing the nucleosynthesis [223]. Axions with couplings at reach of IAXO would also modify the threshold initial mass for which carbon is ignited in the stellar core (Mup), ultimately shifting the required mass to explode as core collapse SN by 1-2 M , depending on the couplings [224,225]. Finally, a recent study indicates that axions reduce the final (pre-SN) luminosity expected for a star of a given initial mass [226] scenario, with couplings somewhat below the recent CAST bound and likely accessible to IAXO and possibly BabyIAXO.…”

Section: Hints For Axions In the Anomalous Cooling Of Stellar Objectsmentioning

confidence: 99%

Physics potential of the International Axion Observatory (IAXO)

Armengaud

Attié

Basso

et al. 2019

J. Cosmol. Astropart. Phys.

243

272

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We review the physics potential of a next generation search for solar axions: the International Axion Observatory (IAXO). Endowed with a sensitivity to discover axion-like particles (ALPs) with a coupling to photons as small as g aγ ∼ 10 −12 GeV −1 , or to electrons g ae ∼10 −13 , IAXO has the potential to find the QCD axion in the 1 meV∼1 eV mass range where it solves the strong CP problem, can account for the cold dark matter of the Universe and be responsible for the anomalous cooling observed in a number of stellar systems. At the same time, IAXO will have enough sensitivity to detect lower mass axions invoked to explain: 1) the origin of the anomalous "transparency" of the Universe to gamma-rays, 2) the observed soft X-ray excess from galaxy clusters or 3) some inflationary models. In addition, we review string theory axions with parameters accessible by IAXO and discuss their potential role in cosmology as Dark Matter and Dark Radiation as well as their connections to the above mentioned conundrums.

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Section: Hints For Axions In the Anomalous Cooling Of Stellar Objectsmentioning

confidence: 99%

Physics potential of the International Axion Observatory (IAXO)

Armengaud

Attié

Basso

et al. 2019

J. Cosmol. Astropart. Phys.

243

272

View full text Add to dashboard Cite

show abstract

“…Moreover, the amount of material processed by nuclear burning that arrives at the surface (3rd dredge up) can increase, modifying the chemical composition of the photosphere [206]. The limiting mass 𝑀 up that marks the transition between stars that will or will not end up as core-collapse SNe is modified [207] as well as the initial mass-final luminosity relation of core-collapse SN progenitors [208]. Some of these studies were driven by the idea that there might be a hint of axion cooling in some stellar systems, but in view of the latest bounds, all of the effects in intermediate-mass stars appear to be marginal for the allowed parameters of QCD axions.…”

Section: Andrea Caputo and Georg Raffeltmentioning

confidence: 99%

Astrophysical Axion Bounds: The 2024 Edition

Raffelt,

Caputo

2024

Proceedings of 1st General Meeting and 1st Training School of the COST Action COSMIC WSIPers — PoS(COSMICWISPers)

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We review the current status of astrophysical bounds on QCD axions, primarily based on the observational effects of nonstandard energy losses on stars, including black-hole superradiance. Over the past few years, many of the traditional arguments have been reexamined both theoretically and using modern data and new ideas have been put forth. This compact review updates similar Lecture Notes written by one of us in 2006 [Lect. Notes Phys. 741 (2008.

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“…• As a result of the coupling g aγγ , the ALP can be produced and emitted copiously from the dense stellar cores, thus affecting the stellar evolution [96][97][98]. A large parameter space of m a and g aγγ has been excluded by the solar neutrino flux and helioseismology [99], the ratio of horizontal branch (HB) to red giants in globular clusters [100], and the SN1987A neutrino data [101], which are labelled respectively as "Sun", "HB stars" and "SN" in the left panel of Fig.…”

Section: Coupling To Photonmentioning

confidence: 99%

“…• As a result of the coupling g aγγ , ALPs can be produced and emitted copiously from dense stellar cores, thus affecting stellar evolution [110][111][112]. Large portions of the (m a , g aγγ ) parameter space have been excluded by measurements of the solar neutrino flux and helioseismology [113], the ratio of horizontal branch (HB) to red giants in globular clusters [114], and SN1987A neutrino data [115].…”

Section: Coupling To Photonsmentioning

confidence: 99%

Gravitational waves from first-order phase transition in a simple axion-like particle model

Dev¹,

Ferrer²,

Zhang³

et al. 2019

J. Cosmol. Astropart. Phys.

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We consider a gauge-singlet complex scalar field Φ with a global U (1) symmetry that is spontaneously broken at some high energy scale f a . As a result, the angular part of the Φ-field becomes an axion-like particle (ALP). We show that if the Φ-field has a non-zero coupling κ to the Standard Model Higgs boson, there exists a large region in the (f a , κ) parameter space where the global U (1) symmetry-breaking induces a strongly first order phase transition, thereby producing stochastic gravitational waves that are potentially observable in current and future gravitational-wave detectors. In particular, we find that future gravitational-wave experiments such as LISA, BBO and aLIGO+ could probe a broad range of the energy scale 10 3 GeV f a 10 8 GeV, independent of the ALP mass. Since all the ALP couplings to the Standard Model particles are proportional to inverse powers of the energy scale f a (up to model-dependent O(1) coefficients), the gravitational-wave detection prospects are largely complementary to the current laboratory, astrophysical and cosmological probes of the ALP scenarios.

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Axions and the Final Fate of Stars

Cited by 3 publications

References 27 publications

Physics potential of the International Axion Observatory (IAXO)

Physics potential of the International Axion Observatory (IAXO)

Astrophysical Axion Bounds: The 2024 Edition

Gravitational waves from first-order phase transition in a simple axion-like particle model

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