Punsly, BrianBrianPunslyMARZIANI, PaolaPaolaMARZIANIBennert, Vardha N.Vardha N.BennertNagai, HiroshiHiroshiNagaiGurwell, Mark A.Mark A.Gurwell2020-11-242020-11-2420180004-637Xhttp://hdl.handle.net/20.500.12386/28506NGC 1275 is one of the most conspicuous active galactic nuclei (AGN) in the local universe. The radio jet currently emits a flux density of ∼10 Jy at ∼1 mm wavelengths, down from the historic high of ∼65 Jy in 1980. Yet, the nature of the AGN in NGC 1275 is still controversial. It has been debated whether this is a broad emission line (BEL) Seyfert galaxy, an obscured Seyfert galaxy, a narrow line radio galaxy, or a BL Lac object. We clearly demonstrate a persistent Hβ BEL over the last 35 yr with a full width at half maximum (FWHM) of 4150-6000 km s<SUP>-1</SUP>. We also find a prominent Pα BEL (FWHM ≈ 4770 km s<SUP>-1</SUP>) and a weak C IV BEL (FWHM ≈ 4000 km s<SUP>-1</SUP>), Hβ/C IV ≈ 2. A far-UV Hubble Space Telescope observation during suppressed jet activity reveals a low luminosity continuum. The Hβ BEL luminosity is typical of broad line Seyfert galaxies with similar far-UV luminosity. X-ray observations indicate a softer ionizing continuum than what would be expected for a broad line Seyfert galaxy with similar far-UV luminosity. This is the opposite of the expectation of advection-dominated accretion. The AGN continuum appears to be thermal emission from a low luminosity, optically thick, accretion flow with a low Eddington ratio, ∼0.0001. The soft, weak, ionizing continuum is consistent with the relatively weak C IV BEL. Evidence that the BEL luminosity is correlated with the jet millimeter-wave luminosity is presented. It appears that the accretion rate regulates jet power.STAMPAenArticle10.3847/1538-4357/aaec752-s2.0-85059866421000454073700014https://arxiv.org/pdf/1810.11716.pdfhttps://iopscience.iop.org/article/10.3847/1538-4357/aaec752018ApJ...869..143PFIS/05 - ASTRONOMIA E ASTROFISICA