Testing the AGN Prardigm in the Micro-Quasar NGC 4395

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Chandra Proposal Id #01700918

Scientific paper

The nearby dwarf spiral galaxy NGC 4395 harbors the least luminous Seyfert 1 nucleus known. In the soft X-ray band, NGC 4395 is quite remarkable. It is rapidly variable, and its spectrum is exceedingly flat for an AGN, exhibiting an unusually strong absorption feature due to intervening ionized gas. Deep AXAF observations will allow us to investigate whether the flat spectrum of this unique object extends to higher energies and if, like other AGNs, it possesses an Fe K emission line. These results will help us to better understand the structure and energetics of NGC 4395's nucleus, as well as insight into the nature of active galaxies at the very bottom of the AGN luminosity function and their contribution to the cosmic X-ray background.

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