1997/01/17 by C. Vignali, Vignali, C., R. Audano +7
Physics and Astronomy · #Astrophysical Phenomena and Observations #Astrophysics (astro-ph) #FOS: Physical sciences #Stellar, planetary, and galactic studies #X-ray Spectroscopy and Fluorescence Analysis #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/9701123
2 pages, latex-macro memsait.sty, epsf.sty, to be published in the Proceedings of the conference "From Micro to Mega Parsec", second Italian conference on AGN, Memorie S.A.IT
arxiv created 1997/01/17 · openalex publication_date 1997/01/17 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Results of an ASCA X-ray observation of NGC 4507 are presented. The spectrum is best parameterized by a double power law (or a partial covering) model plus a narrow FeKα emission line likely due to the line-of-sight absorption matter. The data require also an emission line at ∼ 0.9 keV consistent with NeIX, which may indicate that the soft X-ray emission derives from a combination of resonant scattering and fluorescence of the radiation by photoionized gas. Moreover, complex absorption (or other, unresolved, emission lines) is required by the data below 3 keV. Similarities between the X-ray spectra of NGC 4507 and NGC 4151 are also stressed.