We present the first Fermi Large Area Telescope (LAT) catalog of long-term γ-ray transient sources (1FLT). This comprises sources that were detected on monthly...
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PublicationCatalog of Long-term Transient Sources in the First 10 yr of Fermi-LAT Data
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ProjectCHromospheric magnetic fields in fLAREs and their evolution CHLARE
This project aims to study the variations of the solar magnetic field in flares, the most energetic events in our solar system. Flares accelerate charged...
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PublicationCircular polarization of the CA II H and K lines in solar quiet and active regions
A representative set of profiles is presented for the Ca II H resonace line in Stokes V and I, for the quiet sun, plages, sunspot umbrae, and a flare, as well...
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PublicationEvidence of a White-Light Flare on 10 September 1886
We present evidence of the occurrence of a white-light flare on 10 September 1886. It represents the third such rare event reported in the history of astronomy...
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TalkFlares: highly energetic explosions on the Sun
Flares are among the most energetic magnetic solar phenomena. They are often accompanied by ejections of charged particles, which have a direct influence on the...
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PublicationMultidimensional energy transfer by radiation in the solar atmosphere
Both linear and nonlinear analysis are used to gain a better understanding of the effects of multi-dimensional transfer of energy by radiation in spatially...
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PublicationNew windows to the universe; Proceedings of the Eleventh IAU European Regional Astronomy Meeting, Universidad de La Laguna, Spain, July 3-8, 1989. Part III
Topics discussed in this issue include active galaxies and cosmology, interstellar and intergalactic medium, and astronomical instrumentation. Papers are...
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TalkThe ESA/NASA mission Solar Orbiter
Solar Orbiter is the first mission of the ESA Cosmic Vision program and that has recently been approved at implementation level. It is an M class mission with a...
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TalkThe Magnetic Nature of Our Sun
This talk will give an overview of our understanding of the Sun in the 1960's, the major discoveries since then, and the main questions that need to be answered...