NLS1
April 4-6, 2011
Milano, Italy
published July 05, 2011
Milano, Italy
published July 05, 2011
In 1978, Davidson and Kinman wrote about Markarian 359: "This unusual object merits further observations...". In 1985, Osterbrock and Pogge defined a new class of active galactic nuclei (AGN), named Narrow-Line Seyfert 1 (NLS1). Twenty-five years later, NLS1s still continue to intrigue and bewilder. NLS1s manifest extreme behaviour at all wavelengths. They exhibit the most extreme X-ray variability seen in radio-quiet AGN, the most intense optical FeII emission, and high rates of star formation. In general, their characteristics are consistent of AGNs with relatively low mass black holes accreting close to the Eddington rate. The 2009 Fermi Gamma-ray Space Telescope discovery of high-energy (E>100 MeV) gamma rays in a handful of NLS1s has established the existence of relativistic jets in these systems -- a fact previously hinted at by the flat radio spectrum and high brightness temperature seen in some objects. Since NLS1 are generally hosted by spirals, this poses some intriguing questions on the galaxy evolution and on how relativistic jets are generated. It is therefore time for the broad community to come together and discuss what we have discovered in the last quarter century and lay the foundation for future work.
Workshop Topics: * Central engine: BH mass, accretion disk, BLR/NLR, jet * Host galaxy: morphology, star formation, merging history * NLS1 in the Universe: comparison with other types of AGN, surveys/statistics, formation/merging, cosmological evolution
Editorial Board: Luigi Foschini (chair), Monica Colpi, Luigi Gallo, Dirk Grupe, Stefanie Komossa, Karen Leighly, Smita Mathur.
| Sessions |
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| Welcome |
| General Properties, Surveys |
| High Energy Emission, Jets and Outflows |
| Masses, Host Galaxies, Evolution |
| Poster |
| Welcome |
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Welcome
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| General Properties, Surveys |
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A quarter century of Narrow-Line Sefert 1s (invited)
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NLS1 properties and demographics (invited)
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Statistical analysis of an AGN sample with simultaneous UV and X-ray observations with Swift
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The continuum and emission line properties of NLS1s based on a new SDSS sample of low luminosity type-1 AGN
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The narrow-line region of narrow-line Seyfert 1 galaxies
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Molecular hydrogen in NLSys and its implications for the SED
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The long-term variability of a large sample of AGN
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The near-IR broad-emission line region of AGN
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Enhanced star formation in Narrow-Line Seyfert 1 galaxies
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Hot dust, warm dust and star formation in NLS1s
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Dynamics of clouds in the broad-line region
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Emission line profiles and X-ray observations of broad and narrow line Seyfert 1 galaxies
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Water masers in NLS1 galaxies
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| High Energy Emission, Jets and Outflows |
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An X-ray view of NLS1 (invited)
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The X-ray weak state of Narrow-Line Seyfert 1 galaxies
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X-ray signatures of circumnuclear gas in AGN
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X-ray reverberation in NLS1
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X-ray reverberation delays in NLS1
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The average hard X-ray spectrum of NLS1
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The INTEGRAL Narrow-Line Seyfert 1 Galaxies
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Evidence of powerful relativistic jets in narrow-line Seyfert 1 galaxies
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Global eVLBI observations of J0948+0022
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Long-term multiwavelength properties of PKS 0558-504, a highly accreting BH with a radio jet
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Gamma-ray NLSy1s and 'classical' blazars: are they different at radio cm/mm bands?
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Mass outflows in Narrow-Line Seyfert 1 Galaxies
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Outflowing clouds in the NLS1 Mrk 766
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Contemporaneous Chandra HETG and Suzaku X-ray observations of NGC 4051
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Disentangling the complex absorption spectrum of NGC 7314
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| Masses, Host Galaxies, Evolution |
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Masses of Black Holes in Active Galactic Nuclei: Implications for Narrow-Line Seyfert 1 Galaxies'' (invited)
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Black hole scaling relationships and NLS1s
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Addressing systematic uncertainties in black hole mass measurements
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Host galaxies of NLS1s
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Past and present secular evolution in the host galaxies of NLS1s
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Cosmic Evolution of NLS1 and the Growth of their Black Holes
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Black hole mass estimations: limitations and uncertainties
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The overall uncertainty of single-epoch virial black hole mass estimators and its implication to the M-sigma relation
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The effect of radiation pressure on virial black hole mass estimates: the case of narrow line Seyfert 1 galaxies
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BH masses in NLS1: the role of the broad-line region geometry
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On the BH-galaxy relation of AGN and NLS1
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Mass determination of the supermassive black hole of NGC 4051 Seyfert 1 galaxy based on X-ray spectrum fitting with generic Comptonization model
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| Poster |
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Rest optical spectroscopy of FeLoBALs and LoBALs at intermediate redshift
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X-ray properties of a sample of NLS1 selected from the SDSS
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X-ray selected Narrow-Line Seyfert 1 Galaxies
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Gamma-ray variability of radio-loud narrow-line Seyfert 1 galaxies
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Modelling the full X-ray spectra of MGC -6-30-15 with a relativistic reflection model
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Narrow-Line Seyfert 1s: a luminosity dependent definition
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Optical polarization observations of RL NLS1 Galaxies
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Are Narrow-Line Seyfert 1 Galaxies viewed pole-on?
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New results in reverberation mapping
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WPVS 007 and Mkn 335: the link between NLS1s and BAL QSOs
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Is the SDSS J094533.99+100950.1 higher mass equivalent to narrow-line Seyfert 1 galaxies?
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Radio properties of Narrow-Line Seyfert 1 Galaxies
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Inhomogeneous partial covering in Markarian 766
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The properties of nearby BL Lac Objects with optical jets
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A search for rapid optical variations in very radio-loud narrow-line Seyfert galaxies
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Narrow-Line AGNs: confirming the relationship between metallicity and accretion rate
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A preliminary census of soft excess occurrence from a small sample of RL-NLSy1
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X-ray study of narrow line Seyfert 1 galaxies with strong Fe II emission
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Implications from the optical to UV flux ratio of FeII emission in SDSS DR7 quasars
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High-energy emission from NGC 5506, the brightest hard X-ray NLS1
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Variability, optical-to-X-ray slope and accretion disc properties in a sample of Seyfert 1s
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MERLIN 18cm observations of intermediate redshift NLS1 galaxies
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