Evidence of heavy obscuration in the low-luminosity AGN NGC 4941

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dc.contributor.author Jana, Arghajit
dc.contributor.author Naik, Sachindra
dc.contributor.author Kumari, Neeraj
dc.coverage.spatial United Kingdom
dc.date.accessioned 2022-02-03T08:03:06Z
dc.date.available 2022-02-03T08:03:06Z
dc.date.issued 2022-05
dc.identifier.citation Jana, Arghajit; Naik, Sachindra and Kumari, Neeraj, "Evidence of heavy obscuration in the low-luminosity AGN NGC 4941", Journal of Astrophysics and Astronomy, DOI: 10.1007/s12036-021-09786-4, vol. 43, no. 1, Jun. 2022. en_US
dc.identifier.issn 0250-6335
dc.identifier.issn 0973-7758
dc.identifier.uri https://doi.org/10.1007/s12036-021-09786-4
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/7446
dc.description.abstract We present the results obtained from timing and spectral studies of the highly obscured low luminosity active galactic nucleus NGC 4941 using data obtained from the nuclear spectroscopic telescope array and the Neil Gehrels Swift observatories. We find similar variability in 3–10 keV and 10–60 keV energy ranges with fractional rms variability of ∼14%. We investigate broad-band spectral properties of the source in 3–150 keV range, using data from NuSTAR and Swift/BAT, with phenomenological slab model and physically motivated MYTORUS model. From the spectral analysis, we find heavy obscuration with global average column density of the obscured material as 3.09+1.68−1.01×1024 cm−2. Evidence of a strong reflection component is observed in the spectrum. We detect a strong iron line with equivalent width of ∼1 keV. From the slab model, we obtain the exponential cutoff energy as 177+92−16 keV. From this, we estimate the Compton cloud properties with the hot electron temperature kTe=59+31−5 keV and the optical depth τ = 2.7+0.2−1.6.
dc.description.statementofresponsibility by Arghajit Jana, Sachindra Naik and Neeraj Kumari
dc.format.extent vol. 43, no. 1
dc.language.iso en_US en_US
dc.publisher Springer en_US
dc.subject AGN NGC 4941 en_US
dc.subject NuSTAR en_US
dc.subject Compton cloud en_US
dc.subject Swift/BAT en_US
dc.subject Phenomenological slab model en_US
dc.subject Physically motivated MYTORUS model en_US
dc.title Evidence of heavy obscuration in the low-luminosity AGN NGC 4941 en_US
dc.type Article en_US
dc.relation.journal Journal of Astrophysics and Astronomy

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