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We report the first broad band X-ray spectra of the low luminosity activegalactic nuclei (LLAGN) NGC 1566 (type 1.5) and NGC 4941 (type 2) observed withSuzaku and Swift/BAT covering the 0.5-195 keV band. Both targets have hardX-ray luminosities of ~ 10^{41-42} ergs/s in the 15-55 keV band. The spectra ofthe nucleus are well reproduced by a sum of partially or fully coveredtransmitted emission and its reflection from the accretion disk, reprocessedemission from the torus accompanied by a strong narrow iron-K\alpha line, and ascattered component (for NGC 4941). We do not significantly detect a broadiron-K\alpha line from the inner accretion disk in both targets, and obtain anupper limit on the corresponding solid angle of \Omega/2\pi < 0.3 in NGC 1566.The reflection strength from the torus is moderate, \Omega/2\pi=0.45^{+0.13}_{-0.10} in NGC 1566 and \Omega/2\pi =0.64^{+0.69}_{-0.27} in NGC4941. Comparison of the equivalent width of the narrow iron-K\alpha line with amodel prediction based on a simple torus geometry constrains its half-openingangle to be \theta_oa ~ 60-70 degree in NGC 4941. These results agree with theobscured AGN fraction obtained from hard X-ray and mid-infrared selectedsamples at similar luminosities. Our results support the implication that theaveraged covering fraction of AGN tori is peaked at L 10^{42-43} ergs/s butdecreases toward lower luminosities.

Broad Band X-Ray Spectra of Two Low-luminosity Active Galactic Nuclei NGC 1566 and NGC 4941