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Dynamics of the photosphere and chromosphere

The motions of the surface plasma of the Sun are a possible source of excitation for the Alfvén waves that, propagating through the chromosphere towards the corona, contribute to the heating of the upper layers of the solar atmosphere via the dissipation of the energy
they carry. In recent years there has also been a gradual re-evaluation of the role of the chromosphere as a fundamental interface region between the photosphere, where surface convection dominates and drives the structure of the magnetic field, and the corona, where the magnetic field determines the structure of the plasma in an essentially "force free" situation. In the field of photospheric and chromospheric studies the community of solar physicists has proposed the construction of the first Italian heliospheric mission (ADAHELI – ADvanced Astronomy for HELIophysics), with the feasibility study financed by ASI and currently awaiting funding for the successive phases. In this area, the ISODY instrument has been proposed, composed of a 40 cm Gregorian telescope and a focalplane suite, including a spectropolarimetric channel for the observation of photospheric and chromospheric lines using a double Fabry-Perot interferometer, a broad-band channel and an image stabilising system.

Gruber 2018 prize awarded to Nazzareno Mandolesi and Planck telescope team

Sep 05, 2018

Gruber 2018 prize awarded to Nazzareno Mandolesi and Planck telescope team The general assembly of the International Astronomical Union in Vienna has recently awarded the Gruber Prize 2018 for Cosmology.

INAF reveals details about an elliptical galaxy

Sep 03, 2018

INAF reveals details about an elliptical galaxy New clues about galaxy formation process come from the very detailed images of a group of elliptical galaxies studied by an international team of astronomers led by the National Institute of Astrophysics-INAF.

What is the shape of galaxy clusters?

Aug 21, 2018

What is the shape of galaxy clusters? The 3D shape of galaxy clusters is ellipsoidal, according to a study conducted by an international team of astronomers, recently published in the journal The Astrophysical Journal Letters