Axion-photon coupling

Basic plot

Basic plot with projections

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Helioscope closeup

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High energy astrophysics limits closeup

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Haloscopes closeup

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Ultralight axions

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Heavy axions

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Simplified plot

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Data files and references

Haloscopes:

Click here for a .txt file of all haloscopes combined (except ABRA and SHAFT)

Click here for .txt file of all haloscope projections combined

ABRACADABRA (Run 1): limit, reference
ABRACADABRA (Run 2): limit, reference
ABRACADABRA (Projection) projection, reference
ADBC: projection, reference
ADMX (2010): limit, reference
ADMX (2018): limit, reference
ADMX (2019): limit1, limit2, reference
ADMX (2021): limit, reference
ADMX Sidecar: limit, reference
ADMX Sidecar (JTWPA): limit, reference
ADMX SLIC: limit, reference
ADMX Projection: projection, reference
aLIGO: projection, reference
ALPHA: projection, reference
BASE: limit, reference
BRASS: projection, reference
BREAD: projection, reference
CADEx: projection, reference
CAPP-1: limit, reference
CAPP-2: limit, reference
CAPP-3: limit, reference
CAPP-4: limit, reference
CAPP-5: limit, reference
CAPP-6 (DFSZ): limit, reference
CAST-CAPP: limit, reference
DALI: projection, reference
DANCE concept: projection, reference
DANCE (2023): limit, reference
DM-Radio: projection, reference
FLASH: projection, reference
GrAHal: limit, reference
HAYSTAC (2018): limit (low res.),limit (high res.), reference
HAYSTAC (2020): limit (low res.), limit (high res.), reference
HAYSTAC (2022): limit, reference
LAMPOST: projection, reference
MADMAX: projection, reference
ORGAN (2017): limit, projection, reference
ORGAN-1a (2022): limit,reference
QUAX (2019): limit, reference
QUAX (2020): limit, reference
QUAX (2022): limit, reference
QUAX Projection: projection, reference
RADES: limit, reference
RBF: limit, reference
SHAFT: limit, reference
SRF: projection, reference
SuperMAG: limit, reference
TASEH: limit, reference
TOORAD: projection1, projection2, reference
Twisted Anyon Cavity: projection, reference
UF: limit, reference
UPLOAD (2019): limit, reference
UPLOAD (2023): limit, reference
WISPLC: projection, reference

Helioscopes/LSW

ALPS: limit, reference
ALPS-II: projection, reference
CAST (2007): limit, reference
CAST (2017): limit, reference
CROWS: limit, reference
babyIAXO: projection, reference
IAXO: projection, reference
IAXO+: projection, reference
IAXO (Galactic SN): projection, reference
OSQAR: limit, reference
PVLAS: limit, reference
SAPPHIRES: limit, reference

Astrophysical searches for axions (green)

Astrophysical Black hole spins: limit, reference
Betelgeuse (NuStar X-ray obs.): limit, reference
Bullet Cluster (Radio): limit, reference
Cosmic IR background (axion hint): limit, reference
Chandra (Hydra-A): limit, reference
Chandra (M87): limit, reference
Chandra (NGC 1275): limit, reference
Chandra (H1821+643): limit, reference
Diffuse SN ALP background: limit, reference
Diffuse gamma-rays: limit, reference
Distance ladder: limit, reference
Fermi-LAT (NGC 1275): limit, hole, reference
Fermi-LAT (Galactic SN): projection, reference
Fermi-LAT (Extragalactic SNe): limit, reference
Fermi-LAT (Quasars): limit, reference
Freeze-in ALPs (irreducible axions): limit, reference
Globular cluster R-parameter: limit, reference
Globular cluster R2-parameter: limit, reference
HAWC (TeV Blazars): limit, reference
HESS (PKS 2155-304): limit, reference
Magnetic white dwarf X-rays: limit1, limit2, reference
Magnetic white dwarf polarisation: limit, reference
Mrk 421 (ARGO-YBJ+Fermi): limit, reference
Mrk 421 (MAGIC+Fermi): limit, reference
Planck (BBN + N_eff): limit, reference
Pulsar polar caps: limit, reference
Solar neutrinos: limit, reference
Solar basin, DeRocco et al. (NuSTAR): limit, reference
Solar basin, Beaufort et al. (NuSTAR and SPHINX): limit, reference
SN1987A ALP decay: limit, reference
SN1987A light ALP gamma-ray conversion: limit, reference
SN1987A gamma rays: limit, reference
SN1987A neutrinos: limit, reference
SNe (low-energy) ALP decay: limit, reference
Super star clusters (NuSTAR Xray): limit, reference
White dwarf initial-final mass relation: limit, reference

Astrophysical searches for axions as dark matter (blue)

Axion star explosions: limit1, limit2, reference
BICEP/KECK: limit, reference
Breakthrough Listen (Doppler): limit, reference
CMB Anisotropies limit, reference
COBE/FIRAS + Planck spectral distortions: limit, reference1, reference2
eROSITA (ALP decay) projection, reference
Gamma-ray attenuation: limit, reference
HST Cosmic optical background anisotropies (Nakayama and Yin): limit, reference
HST Cosmic optical background anisotropies (Carenza et al.): limit, reference
INTEGRAL (ALP decay): limit, reference
Leo T gas temperature: limit, reference
MOJAVE: limit, reference
Neutron stars (breakthrough listen) limit, reference
Neutron stars (PSR J2144−3933) limit, reference
POLARBEAR: limit, reference
PPTA+QUIJOTE: limit, reference
Pulsar Polarisation Arrays: projection, reference
SPT: limit, reference
Telescopes (Haystack): limit, reference
Telescopes (MUSE Leo-T): limit, reference
Telescopes (VIMOS Abell 2667 and 2390): limit, reference
THESEUS (ALP DM decay to Xrays): projection, reference
XMM-Newton (decaying DM): limit, reference
2011 Compilation: EBL, X-rays, x_ion, reference

Collider, accelerator and beam dump bounds (purple)

ATLAS (PbPb): limit, reference
BaBar: limit, reference
Beam dump (combined): limit, CHARM, E141, E137, NuCal, NA64
Belle II: limit, reference
BESIII: limit, reference
CMS (PbPb): limit, reference
CONUS: projection, reference
DUNE: projection, reference
FASER (LLP): projection, reference
LEP: limit, reference
LHC (pp): limit, reference
NOMAD: limit, reference
OPAL: limit, reference
PrimEx: limit, reference