European Solar Telescope’s Post

𝘍𝘶𝘭𝘭 𝘥𝘪𝘴𝘬 #𝐒𝐮𝐧𝐥𝐢𝐭𝐌𝐨𝐧𝐝𝐚𝐲𝐬: 𝐚 𝐣𝐨𝐮𝐫𝐧𝐞𝐲 𝐭𝐡𝐫𝐨𝐮𝐠𝐡 𝐭𝐡𝐞 𝐄𝐒𝐓 𝐒𝐨𝐥𝐚𝐫 𝐆𝐚𝐥𝐥𝐞𝐫𝐲 🌞 The H-alpha line shows the solar chromosphere as a delicate pattern of: - Short and narrow fibrils outlining the borders of supergranular cells in the quiet Sun (the roundish cells that can be observed all over the solar disk) - Long fibrils connecting the opposite polarity sunspots of an active region (revealing the magnetic field lines like iron filings around a magnet) - Flares (localized explosive events that release huge amounts of energy) - Prominences off-disk (they can be observed on-disk too, in which case they are referred to as "filaments") 📷 This image is a result of lucky-imaging using the best 25% of 40 frames taken in a 10-second window, deconvolved to restore image details. 📸 Image credit: Emil Kraaikamp (Royal Observatory of Belgium) 🔭 Uccle Solar Equatorial Table, 80 mm H-alpha telescope For further information ⬇️ https://lnkd.in/dWN_6JMB #ESFRI #ERIC #ResearchInfraestructures #solarphysics #Sun #Astronomy

𝘊𝘰𝘳𝘰𝘯𝘢𝘭 𝘳𝘢𝘪𝘯 #𝐒𝐮𝐧𝐥𝐢𝐭𝐌𝐨𝐧𝐝𝐚𝐲𝐬: 𝐚 𝐣𝐨𝐮𝐫𝐧𝐞𝐲 𝐭𝐡𝐫𝐨𝐮𝐠𝐡 𝐭𝐡𝐞 𝐄𝐒𝐓 𝐒𝐨𝐥𝐚𝐫 𝐆𝐚𝐥𝐥𝐞𝐫𝐲 🌞 The movie first shows the upper chromospheric layers of the active region. The scene is dominated by dynamic fibrils rooted in the pores and the active region plage surrounding them. The image then transitions to the red wing of the Halpha line, progressively sampling lower atmospheric layers. At this wavelength, the movie reveals the existence of small and elongated, cool and dense blob-like structures that fall toward the solar surface from chromospheric heights. These blobs are believed to represent on-disk counterparts of coronal rain. ☀️🌧️ 🎥 Movie credit: Patrick Antolin (ITA, University of Oslo) 🔭 Observations: Mats Carlsson, Viggo Hansteen, Jorrit Leenaarts, Ada Ortiz, Sven Wedemeyer (ITA, University of Oslo) More information about this and other solar phenomena here ⬇️ https://lnkd.in/dntvbDcv #ESFRI #ERIC #ResearchInfraestructures #solarphysics #Sun #Astronomy

𝘊𝘰𝘳𝘰𝘯𝘢𝘭 𝘳𝘢𝘪𝘯 #𝐒𝐮𝐧𝐥𝐢𝐭𝐌𝐨𝐧𝐝𝐚𝐲𝐬: 𝐚 𝐣𝐨𝐮𝐫𝐧𝐞𝐲 𝐭𝐡𝐫𝐨𝐮𝐠𝐡 𝐭𝐡𝐞 𝐄𝐒𝐓 𝐒𝐨𝐥𝐚𝐫 𝐆𝐚𝐥𝐥𝐞𝐫𝐲 🌞 The movie first shows the upper chromospheric layers of the active region. The scene is dominated by dynamic fibrils rooted in the pores and the active region plage surrounding them. The image then transitions to the red wing of the Halpha line, progressively sampling lower atmospheric layers.   At this wavelength, the movie reveals the existence of small and elongated, cool and dense blob-like structures that fall toward the solar surface from chromospheric heights. These blobs are believed to represent on-disk counterparts of coronal rain. ☀️🌧️   🎥 Movie credit: Patrick Antolin (ITA, University of Oslo) 🔭 Observations: Mats Carlsson, Viggo Hansteen, Jorrit Leenaarts, Ada Ortiz, Sven Wedemeyer (ITA, University of Oslo)   More information about this and other solar phenomena here ⬇️ 🔗 https://lnkd.in/dntvbDcv   #ESFRI #ERIC #ResearchInfraestructures #solarphysics #Sun #Astronomy

𝘚𝘶𝘯𝘴𝘱𝘰𝘵 𝘤𝘩𝘳𝘰𝘮𝘰𝘴𝘱𝘩𝘦𝘳𝘦 #𝐒𝐮𝐧𝐥𝐢𝐭𝐌𝐨𝐧𝐝𝐚𝐲𝐬: 𝐚 𝐣𝐨𝐮𝐫𝐧𝐞𝐲 𝐭𝐡𝐫𝐨𝐮𝐠𝐡 𝐭𝐡𝐞 𝐄𝐒𝐓 𝐒𝐨𝐥𝐚𝐫 𝐆𝐚𝐥𝐥𝐞𝐫𝐲 🌞 The Rapid Oscillations in the Solar Atmosphere (ROSA) and Hydrogen-Alpha Rapid Dynamics camera (HARDcam) instruments are high cadence broad-band imagers installed as common-user instruments on the Dunn Solar Telescope at the National Solar Observatory in New Mexico since 2012. They are capable of imaging the lower solar atmosphere at frame rates exceeding 30 frames-per-second with a diffraction-limited spatial sampling of 0.069 arcsecs/pixel.   The images show the variation of the active region with height in the solar atmosphere. Height increases from left to right in these images. The green image is a snapshot of the photosphere. The blue image shows the boundary between the upper photosphere and the lower chromosphere. The red image shows the highest region observed by HARDcam, corresponding to the upper chromosphere. These images show how features change across the solar atmosphere and how they are related.   📸 Image credit: Peter H. Keys, David B. Jess (QUB)   More information about Sunspot chromosphere and other solar phenomena in the EST Solar Gallery 👇🏻 https://lnkd.in/dntvbDcv   #ESFRI #ERIC #ResearchInfraestructures #solarphysics #Sun #Astronomy

𝘚𝘶𝘯𝘴𝘱𝘰𝘵 𝘜𝘮𝘣𝘳𝘢𝘦 #𝐒𝐮𝐧𝐥𝐢𝐭𝐌𝐨𝐧𝐝𝐚𝐲𝐬: 𝐚 𝐣𝐨𝐮𝐫𝐧𝐞𝐲 𝐭𝐡𝐫𝐨𝐮𝐠𝐡 𝐭𝐡𝐞 𝐄𝐒𝐓 𝐒𝐨𝐥𝐚𝐫 𝐆𝐚𝐥𝐥𝐞𝐫𝐲 🌞 Umbral dots are a signature that convection is happening even inside a sunspot, despite their strong magnetic fields inhibiting normal solar surface convection. These dots and light bridges in the umbra and penumbra reveal smaller convection signs, observed at high spatial resolution as bright spots in the dark umbra.   👉🏻 The figure displays, from top to bottom, continuum intensity images, velocity maps from spectral profiles, and net circular polarisation maps showing magnetic field and velocity gradients along the line of sight. Temporal changes are studied by recording images at successive times.   📸 Image credit: Ada Ortiz, Luc Rouppe van der Voort (ITA, University of Oslo)   More information about this and other solar phenomena here ⬇️ 🔗 https://lnkd.in/dntvbDcv   #ESFRI #ERIC #ResearchInfraestructures #solarphysics #Sun #Astronomy

𝘚𝘶𝘯𝘴𝘱𝘰𝘵 𝘭𝘪𝘨𝘩𝘵 𝘣𝘳𝘪𝘥𝘨𝘦𝘴 #𝐒𝐮𝐧𝐥𝐢𝐭𝐌𝐨𝐧𝐝𝐚𝐲𝐬: 𝐚 𝐣𝐨𝐮𝐫𝐧𝐞𝐲 𝐭𝐡𝐫𝐨𝐮𝐠𝐡 𝐭𝐡𝐞 𝐄𝐒𝐓 𝐒𝐨𝐥𝐚𝐫 𝐆𝐚𝐥𝐥𝐞𝐫𝐲 🌞 Chromospheric fan-shaped jets ejected from the light bridge of a decaying sunspot. These jets extend to several thousands of kilometers and move at hundreds of km/s. They are driven by magnetic reconnection between the umbral field and the more horizontal field of the light bridge. 📸 Image credits:Credit: Carolina Robustini (ISP) 🔭 Observations: Gregal Vissers, Ainar Drews, Luc Rouppe van der Voort and Torben Leifsen (ITA/Oslo) Swedish 1-m Solar Telescope More information on this solar phenomenon here ⬇️ https://lnkd.in/dXjxZve2 #ESFRI #ERIC #ResearchInfraestructures #solarphysics #Sun #Astronomy

In honor of the #geomagneticstorm impacting most of the world these past 2 days, I wanted to share a little bit about why #solarstorms occur: Solar storms occur when the sun releases massive amounts of energy in the form of solar flares and CMEs (Coronal Mass Ejections). These phenomena are primarily driven by the sun's magnetic activity. Solar flares are sudden bursts of radiation caused by the release of magnetic energy stored in the sun's atmosphere. Meanwhile, CMEs involve the ejection of billions of tons of solar material into space. Both solar flares and CMEs can have significant impacts on Earth's magnetosphere and ionosphere, leading to geomagnetic storms and potentially disrupting communication systems, satellites, and power grids. But why does the solar storm cause #northernlights , and why are these northern lights so colorful? When the charged particles from solar storms interact with Earth's magnetic field, they are directed towards the poles. As they collide with gases in the upper atmosphere, particularly oxygen and nitrogen, they emit light. This phenomenon results in the colorful displays known as the northern lights in the northern hemisphere. The intensity and colors of the auroras depend on factors such as the type and energy of the incoming particles as well as atmospheric conditions. In summary, solar storms, interacting with Earth's magnetosphere, cause charged particles to collide with gases in the upper atmosphere, resulting in the captivating phenomenon of the northern lights. #science #astronomy #space #geomagneticstorm

🚀 **Latest Solar Activity Update - July 15, 2024** 🌟 The sun has been extremely active, with significant solar flares observed over the past few days. The sunspot region AR3738 has shown high magnetic complexity, producing multiple M-class flares and an X1.3 flare on July 14. This surge in solar activity has led to radio blackouts and heightened interest in space weather monitoring. Stay tuned for more updates as scientists continue to observe and analyze these solar events. #SpaceWeather #SolarFlares #Astronomy #ScienceNews

Join us as we uncover the fascinating world of Solar Cycle Patterns! Scientists have been studying the Sun's activity for centuries, tracking Solar Cycles to better understand space weather and its impact on Earth. Solar Cycle 25 is nearing its peak, but researchers have already detected hints of the next cycle, Solar Cycle 26. By analyzing sound waves from deep inside the Sun, astronomers are gaining valuable insights into upcoming solar activity. This discovery could revolutionize space weather forecasting and help us prepare for potential effects on our planet. ☀️🌎 #SolarCycle #SpaceWeather #AstronomyResearch https://lnkd.in/dm4f6fvg #SolarPower #RenewableEnergy #GreenTech #SustainableLiving #EcoFriendlyInnovation

𝘍𝘪𝘭𝘢𝘮𝘦𝘯𝘵𝘴 #𝐒𝐮𝐧𝐥𝐢𝐭𝐌𝐨𝐧𝐝𝐚𝐲𝐬: 𝐚 𝐣𝐨𝐮𝐫𝐧𝐞𝐲 𝐭𝐡𝐫𝐨𝐮𝐠𝐡 𝐭𝐡𝐞 𝐄𝐒𝐓 𝐒𝐨𝐥𝐚𝐫 𝐆𝐚𝐥𝐥𝐞𝐫𝐲 🌞 Solar filaments are best seen using an H-alpha filter, visible even with amateur telescopes, and resemble dark clouds which lie in the upper atmosphere of the Sun, the chromosphere and corona. Since many decades, solar physicists have tried to explain how filaments are formed, how they remain stable in the solar atmosphere and why they are sometimes violently expelled into space.   This image shows a possible scenario of a stable filament. The surface is represented by a continuum image and the filament (upper black structure) by an H-alpha image, both observed with the Dutch Open Telescope (La Palma, Spain). The magnetic field lines were inferred and interpreted using observations from the German Vacuum Tower Telescope (Tenerife, Spain). They are shown in different colors depending on their location on the Sun. In the image it is seen that the magnetic field lines support the filament's plasma against gravity. Furthermore, the field lines are responsible for the stability of the filament.   📸 Image credit: Christoph Kuckein (AIP)   More information about filaments and other solar phenomena in the EST Solar Gallery ⬇️ https://lnkd.in/dntvbDcv   #ESFRI #ERIC #ResearchInfraestructures #solarphysics #Sun #Astronomy