Astrophysical: Intergalactic medium

  • Publication
    Nanodiamond Dust and the Far-Ultraviolet Quasar Break
    We explore the possibility that the steepening observed shortward of 1000 Å in the energy distribution of quasars may result from absorption by dust, being...
  • Publication
    Narrow band survey for intragroup light in the Leo HI cloud. Constraints on the galaxy background contamination in imaging surveys for intracluster planetary nebulae
    We have observed emission line objects located in a 0.26 deg2 field in the M 96 (Leo) group, coincident with the intergalactic HI cloud. The emission line...
  • Publication
    On the Dearth of Ultra-faint Extremely Metal-poor Galaxies
    Local extremely metal-poor galaxies (XMPs) are of particular astrophysical interest since they allow us to look into physical processes characteristic of the...
  • Publication
    On the influence of resonant scattering on cosmic microwave background polarization anisotropies
    We implement the theory of resonant scattering in the context of cosmic microwave background (CMB) polarization anisotropies. We compute the changes in the E...
  • Publication
    On the presence of thermal Sunyaev-Zel'dovich induced signal in the first-year WMAP temperature maps
    Using available optical and X-ray catalogues of clusters and superclusters of galaxies, we build templates of thermal Sunyaev-Zel'dovich (tSZ) emission as they...
  • Publication
    Optimal 1D Ly α forest power spectrum estimation - III. DESI early data
    The 1D power spectrum P 1D of the Ly α forest provides important information about cosmological and astrophysical parameters, including constraints on warm dark...
  • Publication
    OSIRIS Tunable Filter Imaging of the Large Scale Shock in Stephan's Quintet
    We present preliminary OSIRIS Hα, [NII] and [SII] images and line-ratios on the large-scale shock (about 40 kpc long) discovered in the most popular compact...
  • Publication
    Probing IGM large-scale flows: warps in galaxies at shells of voids
    Context: Hydrodynamical cosmological simulations predict flows of the intergalactic medium along the radial vector of the voids, approximately in the direction...
  • Publication
    Probing the small-scale structure of the intergalactic medium with ESPRESSO: spectroscopy of the lensed QSO UM673
    The gravitationally lensed quasar J014516.6-094517 at z = 2.719 has been observed with the ESPRESSO instrument at the ESO VLT to obtain high-fidelity spectra of...