2010-08-13 19:39:48
Inés Rodríguez Hidalgo is an astrophysicist, director of the Science Museum of Valladolid, she has researched the physics of the Sun at the Institute of Astrophysics of the Canary Islands, as a scientific disseminator she actively participated in the Canarias Innova project and is the author of many scientific and popular articles. .
During two successive programs of Talking to Scientists, Inés Rodríguez Hidalgo is going to guide us on an exciting journey that, taking the Earth as a starting point, will take us to the center of our star. In this first part of the trip we talk about the energy that comes to us from the Sun, we will fly beyond our atmosphere to observe the Sun with the artificial eyes provided by several space probes: SOHO, TRACE, HINODEetc
This first part of the trip will allow us to get closer to the surface of the Sun, although, as Inés tells us during the interview, it is not a surface in the classic sense. The next chapter we will dive into the solar sphere to visit the nuclear heart that beats at its center.
As a complement to what she tells us, Inés Rodríguez Hidalgo has provided us with graphic information about the places we are going to visit:
Different parts of the Sun (image 1)
Solar corona (image 2): An image of the corona across the disk, in X-rays, is superimposed on the corona at the solar edge observed during an eclipse, in visible light. Numerous coronal jets with different shapes can be seen, bright spots in X-rays, and coronal holes, areas of low emission in both visible and X-rays.
Solar chromosphere (image 3): its appearance in the red emission of hydrogen at 656.3 nanometers has been compared to “a burning meadow.” In the image, bright protuberances are observed on the edge, which are called filaments when they are projected, dark, on the surface. The active regions are also perceived with spots (more clearly visible in the photosphere) surrounded by the “plages”, the chromospheric counterpart of the faculae of the photosphere.
Solar photosphere (image 4): in it, groups of sunspots are observed, surrounded by bright faculae. The spectacular spot was observed by IAC researchers, who found it so beautiful that they named it “Claudia” (after model Claudia Schieffer). The entire surface of the Sun, seen with high spatial resolution, has a “paella” appearance: it is granulation, evidence of convective movements that heat the photosphere from below.
Oscillations of the Sun (image 5): If a piano has 88 keys, each corresponding to a musical note, the Sun vibrates with 10 million different “notes” at once. This computer-generated image shows the pattern of upward (blue) and downward (red) movements of solar material for a particular mode of oscillation (an individual solar “note”). As can be seen, the oscillations involve the surface and interior layers of the Sun, which is why Helioseismology allows us to probe the solar interior.
Selection of articles published by Inés Rodríguez Hidalgo
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