Astrophysical: Solar activity

  • Talk
    1st IAU-G5 seminar: The revolution of task-based computing, applied to stellar and planetary atmospheres
    (This seminar is organized by the IAU G5 commission on stellar and planetary atmospheres) Task-based computing is a method where computational problems are...
  • Publication
    A consideration of the solar cycle in the light of the behavior of the large active regions
    The solar cycle was studied by considering only the large active regions (AR), with small region data being ignored. Results show that at birth almost all the...
  • Publication
    A measurement of the background solar velocity spectrum
    Ten years of continuous measurements of the radial velocity of the Sun have been used to estimate the contribution of various solar surface phenomena to the...
  • Publication
    A summary of solar 1-8A measurements from the SMS and GOES satellites, 1977-1981
    The 1-8A band of synodic full-disc solar X-rays (1-8A) W/m(2) were measured nearly continuously from 1975 to 1981 aboard the SMS-1, SMS-2, GOES-1, GOES-2, and...
  • Publication
    Active region asymmetry as a result of the rise of magnetic flux tubes
    The magnetic flux tubes that rise across the convection zone to produce active regions are shown to develop a difference in inclination between their preceding...
  • Publication
    An example of the cancellation of magnetic fields during the decay of an active region
    A case of cancellation of magnetic fields is observed during the decay of a small active region. Three different sources of information were simultaneously used...
  • Publication
    Analysis of variability of p-mode parameters in 11 years of IRIS data
    11 years of IRIS (the low degree helioseismology network) have been analysed for the study of p-modes parameters variability. The duty cycle of the network data...
  • Publication
    Are the small active regions related to the decay of the larger ones?
    To investigate the location of the actual limit for the different behavior, the active regions with fluxes greater than 10 to the 20 Mx are investigated. After...
  • Publication
    Aurorae Observed at the Canary Islands
    Descriptions of eleven aurorae observed in the Canary Islands during the period 1770 - 2010 have been found in different documents. Most of them are coincident...