Journal: Astronomy and Astrophysics

  • Publication
    Granulation and magnetism in the solar atmosphere.
    The properties of the photosphere in magnetic and non magnetic regions, at two levels in the solar atmosphere, have been studied, using two virtually...
  • Publication
    Granulation in K-type dwarf stars. I. Spectroscopic observations
    Aims: We seek to detect and quantify the effects of surface convection (granulation) on the line spectra of K-dwarfs as a first step towards a rigorous testing...
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    Granulation in K-type dwarf stars. II. Hydrodynamic simulations and 3D spectrum synthesis
    Aims: To explore the impact of surface inhomogeneities on stellar spectra, granulation models need to be computed. Ideally, the most fundamental characteristics...
  • Publication
    Gray transits of WD 1145+017 over the visible band
    We have observed several relatively deep transits of the white dwarf WD 1145+017 with the Gran Telescopio Canarias (GTC) in the wavelength range 480 to 920 nm...
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    GRB 050904 at redshift 6.3: observations of the oldest cosmic explosion after the Big Bang
    We present optical and near-infrared observations of the afterglow of the gamma-ray burst GRB 050904. We derive a photometric redshift z = 6.3, estimated from...
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    GRB 051028: an intrinsically faint gamma-ray burst at high redshift?
    Aims.We present multiwavelength observations of the gamma-ray burst GRB 051028 detected by HETE-2 in order to derive its afterglow emission parameters and to...
  • Publication
    GRB 060605: multi-wavelength analysis of the first GRB observed using integral field spectroscopy
    The long and relatively faint gamma-ray burst GRB 060605 detected by Swift/BAT lasted about 20 s. Its afterglow could be observed with Swift/XRT for nearly 1...
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    GRB 161219B/SN 2016jca: A low-redshift gamma-ray burst supernova powered by radioactive heating
    Since the first discovery of a broad-lined type Ic supernova (SN) with a long-duration gamma-ray burst (GRB) in 1998, fewer than fifty GRB-supernovae (SNe) have...
  • Publication
    GRB010222: Afterglow emission from a rapidly decelerating shock
    The GRB010222 optical and near-infrared (NIR) afterglow was monitored at the TNG and other Italian telescopes starting ~ 1 day after the high-energy prompt...