Publication type: Refereed

  • Publication
    SAXJ1808.4-3658: high-resolution spectroscopy and decrease of pulsed fraction at low energies
    XMM-Newton observed the accreting millisecond pulsar SAX J1808.4-3658 during its 2008 outburst. We present timing and spectral analyses of this observation, in...
  • Publication
    SBS 1150+599A: An extremely oxygen-poor planetary nebula in the Galactic halo?
    We report results of a spectrophotometric study of SBS 1150+599A and discuss the nature of this object based upon our data. Our study shows that SBS 1150+599A...
  • Publication
    Scalar resonance in graviton-graviton scattering at high-energies: The graviball
    We study graviton-graviton scattering in partial-wave amplitudes after unitarizing their Born terms. In order to apply S-matrix techniques, based on unitarity...
  • Publication
    Scale Lengths in Disk Surface Brightness as Probes of Dust Extinction in Three Spiral Galaxies: M51, NGC 3631, and NGC 4321
    We have measured the radial brightness distributions in the disks of three nearby face-on spiral galaxies, M51, NGC 3631, and NGC 4321 (M100), in the...
  • Publication
    Scale-length determinations of exponential discs of spiral galaxies - A comparison
    In the present comparative study of published values for the scale lengths of spiral galaxies' exponential disks, the average value of the discrepancy for more...
  • Publication
    Scaling behavior of the vertical velocity field in the solar photosphere
    We analyze, for the first time, the scaling behavior of the photospheric vertical velocity field. Our analysis is based on data collected by the Italian...
  • Publication
    Scaling slowly rotating asteroids with stellar occultations
    Context. As evidenced by recent survey results, the majority of asteroids are slow rotators (spin periods longer than 12 h), but lack spin and shape models...
  • Publication
    Scattered synchrotron emission and a giant torus revealed in polarized light in the nearest radio galaxy Centaurus A
    Context. Centaurus A (Cen A) is the closest radio galaxy and a prime example of a low-luminosity active galactic nucleus (AGN), exhibiting complex emissions...
  • Publication
    Scattering Polarization and Hanle Effect in Stellar Atmospheres with Horizontal Inhomogeneities
    Scattering of light from an anisotropic source produces linear polarization in spectral lines and in the continuum. In the outer layers of a stellar atmosphere...