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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 Puschmann
Example 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

Slipping reconnection - Movie 1

Author: Michal Sobotka
Slipping reconnection model

Views: 584

Magneto-acoustic wave propagation in the solar atmosphere: vertical magnetic field ($\theta=30^°$), disturbance $\delta B$

Author: Christian Nutto
Magnetic 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 Nutto
The 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 Network
EST video contribution to the international day of women and girls in science 2018.

Views: 4

Magneto-acoustic waves in magnetic flux tube

Author: Vigeesh Gangadharan
Temperature 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 Knowledge
In 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

Slipping reconnection - Movie 2

Author: Michal Sobotka
Observed flare ribbon

Views: 476

Looking inside the Sun

Author: Markus Roth
This 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 Nutto
The 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