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We present a spectral analysis of the NuSTAR and XMM-Newton observations ofthe Seyfert 1h galaxy/ULIRG IRAS 05189-2524 taken in 2013. We find evidence forrelativistic disk reflection in the broadband X-ray spectrum: a highlyasymmetric broad Fe K$\alpha$ emission line extending down to 3 keV and aCompton scattering component above 10 keV. Physical modeling with aself-consistent disk reflection model suggests the accretion disk is viewed atan intermediate angle with a super-solar iron abundance, and a mild constraintcan be put on the high-energy cutoff of the power-law continuum. We test thedisk reflection modeling under different absorption scenarios. A rapid blackhole (BH) spin is favored, however we cannot place a model-independent tightconstraint on the value. The high reflection fraction ($R_{\rm ref} \simeq$2.0-3.2) suggests the coronal illuminating source is compact and close to theBH (lying within 8.7 $R_{\rm g}$ above the central BH), where light-bendingeffects are important.

Evidence for Relativistic Disk Reflection in the Seyfert 1h Galaxy/ULIRG IRAS 05189-2524 Observed by NuSTAR and XMM-Newton