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High energy NLSy 1 galaxies

High energy NLSy 1 galaxies. FRANCESCA PANESSA on behalf of the IBIS survey/AGN team: Loredana Bassani Angela Bazzano Alessandra De Rosa Antony Dean Maria Teresa Fiocchi Raffaella Landi Angela Malizia Manuela Molina Pietro Ubertini. ACTIVE GALACTIC NUCLEI 9

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High energy NLSy 1 galaxies

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  1. High energy NLSy 1 galaxies FRANCESCA PANESSA on behalf of the IBIS survey/AGN team:Loredana Bassani Angela Bazzano Alessandra De Rosa Antony Dean Maria Teresa Fiocchi Raffaella Landi Angela Malizia Manuela Molina Pietro Ubertini ACTIVE GALACTIC NUCLEI 9 Ferrara, 25-27 Maggio 2010

  2. Narrow Line Seyfert 1s NLSy1 are a sub-class of type 1 Seyfert with peculiar optical properties • In X-RAYs: • Steeper intrinsic hard X-ray continuum - Compton cooling of AD? • Strong soft excess and extreme rapid variability • High energy hump, reflection/light bending models • Small black hole mass - High Eddington ratio! BROAD-BAND data are crucial to define the continuum and discriminate models However only a few NLSy1 > 10 keV

  3. High energy observations of Narrow Line Seyfert 1s (Malizia et al. 2008) • Five Hard X-ray selected NLSy1s: • Analysis of the previous IBIS catalogue spectra combined with Swift/XRT • Steep power law spectrum above 10 keV • Absent or absorbed soft excess • Low high energy cut-off (3/5: 30-50 keV)

  4. Optical identification and classification • Criteria: • [OIII]λ5007/Hβratio<3 • FWHM(Hβ) ≤ 2000 km/s • FeII/Hβ > 0.5 Osterbrock & Pogge (1985) Six NLSy1 (IGR) newly identified (Masetti et al. 2009, 2008, 2006, Parisi et al. 2009)

  5. Hard X-ray selected INTEGRAL NLSy1 Swift J0923.7+2255 (*Swift/BAT) NGC 4051 Mrk 766 NGC 4748 Mrk 783 IGR J14552-5133 IRAS 15091-2107 IGR J16185-5928 IGR J16385-2057 IGR J16426+6536 IGR J19378-0617 ESO 399-IG 020 Swift J2127.4+5654 Fourth IBIS Catalogue (Bird et al 2010, ApJS) 13 Narrow Line Seyfert 1 10 never observed before below 10 keV 8 New XMM observation 2 New Suzaku …other new data are coming…

  6. Suzaku 76 ks Miniutti et al. in prep IRAS 15091-2107 Reflection components IGR J16185-5928 Strong reflection component Panessa et al. in prep

  7. Variable broad Fe: SWIFT J2127.4+5654 Miniutti et al. 2009 MNRAS Suzaku 92 ks • Broad relativistic iron emission line (originating in reflection from the innermost region of the AD) !!!Evidence of variability!!! • Energy cut-off at 50+40-20 keV • Two narrow lines (5.8 and 6.4 keV) • No strong reflection XMM-Newton (10 ks) +IBIS Panessa et al. in prep Variability or poor S/N? 120 ks new XMM will tell …

  8. ..and variable? Variable broad Fe: IGR J16385-2057 Broad FeK

  9. Strong soft excess: IGR J19378-0617 Variability Strong soft excess

  10. Strong soft excess: Swift J0923.7+2255 Strong soft excess No variability in the short LC

  11. IBIS Seyfert 1 IBIS NLSy1 Molina et al. in prep Average INTEGRAL spectra: photon index Hard X photon index broadly distributed

  12. Average high energy properties No relation with flux Not always the extrapolation of the soft X-ray spectrum

  13. Black hole mass and Eddington ratio Panessa et al. in prep The hard X-ray selection is not producing any bias in the accretion efficiency Bianchi et al. 2009

  14. Conclusions • SAMPLE of HARD X-ray NLSY1 • Hard X-ray and Soft X-ray Photon indeces distributed as in Sey1 • High energy cut-off in two sources out of 6 • Strong soft excess in 4/6 - not always related to variability/reflection • Strong Fe line ALWAYS (broad/variable in at least 5 source) The missed hard X-ray AGN sky: Importance of follow-up of INTEGRAL AGN - very bright sources - very easy to get high statistics spectra

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