Browsing by Author "Gallo, Luigi C."

Browsing by Author "Gallo, Luigi C."

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    X-ray spectral and variability properties of low-mass active galactic nuclei 
    Ludlam, R. M.; Cackett, E. M.; Gultekin, K.; Fabian, A. C.; Gallo, Luigi C.; Miniutti, G. (Oxford University Press, 2015-03)
    We study the X-ray properties of a sample of 14 optically selected low-mass active galactic nuclei (AGN) whose masses lie within the range 10[superscript 5]–2 × 10[superscript 6] M[subscript circled dot] with XMM–Newton. ...

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    An X-ray timing analysis of narrow-line and broad-line Seyfert 1 galaxies with Suzaku 
    Hollett, Angelo R. (Halifax, N.S. : Saint Mary's University, 2021)
    The Suzaku X-ray satellite has been decommissioned since 2015, leaving us with a known catalogue of observed active galactic nuclei (AGN). This work provides a timing analysis of all broad-line and narrow-line Seyfert 1 ...

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    An x-ray timing analysis of NGC 6814 
    Hodd, Thomas (Halifax, N.S. : Saint Mary's University, 2024-04-20)
    We perform an X-ray timing analysis of the type 1.5 Seyfert galaxy NGC 6814 to characterise its variability as a means of understanding the structure and properties of its active galactic nucleus (AGN). Using data from ...

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    XMM-Newton observations of the narrow-line Seyfert 1 galaxy Mrk 335 in a historical low X-ray flux state 
    Gallo, Luigi C.; Grupe, Dirk; Komossa, Stefanie; Fabian, Andrew C.; Larsson, Josefin; Pradhan, Anil K.; Xu, Dawei; Miniutti, Giovanni (American Astronomical Society, 2008-07)
    We report the discovery of strong soft X-ray emission lines and a hard continuum above 2 keV in the narrow-line Seyfert 1 galaxy Mrk 335 during an extremely low X-ray flux state. Mrk 335 was observed for 22 ks by XMM-Newton ...