Category/Subcategory: Natural Sciences/Astronomy
Spicules and their on-disk counterparts - The main driver for solar chromospheric heating? - The GREGOR Fabry-Perot Interferometer @ VTT
Author: Klaus Gerhard PuschmannExample of a typical Hα Line Scan of solar off-limb spicules (in emission) and on-disk counterparts (in absorption) performed on 4 May 2005 with the GREGOR Fabry-Perot Interferometer (GFPI, Puschmann et al. 2006, A&A 451, 1151) d ... more Views: 978
Views: 584
Magneto-acoustic wave propagation in the solar atmosphere: vertical magnetic field ($\theta=30^°$), disturbance $\delta B$
Author: Christian NuttoMagnetic field perturbations, $\delta B/B_0$, for di fferent time steps and for the scenario of a vertical magnetic fi eld. The magneto-acoustic wave propagates from the source (piston) located at (x; z) = (1000;-750) km. The hori ... more Views: 724
Simulation of a spherical magneto-acoustic wave propagating in the solar atmosphere: interaction with magnetic canopy, $\delta v$
Author: Christian NuttoThe spherical magneto-acoustic wave is excited right beneath the magnetic canopy. The color map shows the velocity perturbations $\delta |v|$. The green contours display the equipartition level, where $c_\mathrm{s} =c_\mathrm{A}$. Views: 914
#InternationalDayOfWomenAndGirlsInScience 2018
Author: Solarnet - High Resolution Solar Physics NetworkEST video contribution to the international day of women and girls in science 2018. Views: 4
Magneto-acoustic waves in magnetic flux tube
Author: Vigeesh GangadharanTemperature perturbations associated with the propagation of magneto-acoustic waves in a magnetic flux tube. Two scenarios of wave excitation, viz. granular buffeting and swirly motion are studied. Buffeting by granule are likely ... more Views: 697
Can we deflect astroids?
Author: Euronews KnowledgeIn the edition of Space, Euronews correspondent Jeremy Wilks reports from the Observatory of the Côte d'Azur in the south of France on a unique mission to deflect an asteroid. euronews knowledge brings you a fresh mix of the w ... more Views: 263
Views: 476
Looking inside the Sun
Author: Markus RothThis video is a feature of the Euronews Futuris programme from 2009: Since the first generation of telescopes, 400 years ago, astronomers have been paying close attention to the Sun, which can be observed in a level of detail not ... more Views: 1134
Tornadoes in the solar atmosphere: Velocity streamlines
Author: Christian NuttoThe sequence shows the evolution of dynamic structures resembling tornadoes in the solar atmosphere. The red lines represent stream lines of the velocity field in the solar atmosphere. The contour shows the dynamic evolution of th ... more Views: 924