Astrofísicas: Métodos

  • Publicación
    On the Variation of the Peak Asymmetry of Low-l Solar p Modes
    The resonant peaks of solar p modes show small amounts of asymmetry in frequency. Here, we use five independent sets of contemporaneous data, collected over a ~...
  • Publicación
    On-sky demonstration of matched filters for wavefront measurements using ELT-scale elongated laser guide stars
    The performance of adaptive optics systems is partially dependent on the algorithms used within the real-time control system to compute wavefront slope...
  • Publicación
    Optical and near-infrared observations of the GRB 970616 error box
    We report on near-infrared and optical observations of the GRB 970616 error box and of the X-ray sources discovered by ASCA and ROSAT in the region. No optical...
  • Publicación
    Optical properties of Y dwarfs observed with the Gran Telescopio Canarias
    Aims: Our science goals are to characterise the optical properties of Y dwarfs and to study their consistency with theoretical models. Methods: A sample of five...
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    Optical spectroscopy of blazars for the Cherenkov Telescope Array - II
    Active galactic nuclei (AGNs) make up about 35 per cent of the more than 250 sources detected in very high-energy (VHE) gamma rays to date with the imaging...
  • Publicación
    Optical Spectroscopy of Candidates in the LIGO/Virgo Binary Merger Error Boxes
    We performed optical spectroscopy of the candidates inside the gravitational wave errorboxes (S190408an, S190425z, S190426c, S190510g, S190728q, S190814bv). The...
  • Publicación
    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...
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    Optimising and comparing source-extraction tools using objective segmentation quality criteria
    Context. With the growth of the scale, depth, and resolution of astronomical imaging surveys, there is increased need for highly accurate automated detection...
  • Publicación
    Optimization with numerical simulations of the conjugate altitudes of deformable mirrors in an MCAO system
    This article reports on the results of simulations conducted to assess the performance of a modal Multi-Conjugate Adaptive Optics (MCAO) system on a 10 m...