Browsing by Subject "Galactic nuclei"

Browsing by Subject "Galactic nuclei"

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    Investigation of resonance states in [superscript]11Li 
    Singh, Mukhwinder (Halifax, N.S. : Saint Mary's University, 2025-02-19)

    Abstract: Halo nuclei, such as 11Li, exhibit a unique structure characterized by a few neutrons that extend far from the core, forming a diffuse neutron halo. Understanding the resonance states in 11Li is ...


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    Variable blurred reflection in the narrow-line Seyfert 1 galaxy Mrk 493 
    Bonson, K.; Gallo, Luigi C.; Wilkins, D.R.; Fabian, A.C. (Oxford University PressOxford University Press on behalf of the Royal Astronomical Society, 2018-04-04)

    We examine a 200 ks XMM–Newton observation of the narrow-line Seyfert 1 galaxy Mrk 493. The active galaxy was half as bright as in a previous 2003 snapshot observation ...


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    X-ray spectral variability of blazars using principal component analysis 
    Gallant, D.; Gallo, Luigi C.; Parker, M.L. (Oxford University Press, 2018-07-25)
    Principal component analysis (PCA) is applied to a variety of blazars to examine X-ray spectral variability. Data from nine different objects are analysed in two ways: long-term, which examines variability trends across ...