Solar-Flare

Calls For Artemis II To Be Postponed After Successful Prediction Of Far Side Solar Eruptions As if returning to the Moon’s vicinity hadn’t already had enough things to delay it, now risky space...


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Sun news: Two new sunspots end spotless three days

Sun news: A new large coronal hole emerges from the east Sun news for March 9, 2026: A new large coronal hole has emerged from the east. Soon, its fast solar wind will be coming our way at Earth. T...

#Sun

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The real cosmic horror isn't a solar flare or a megacorp with an orbital laser. It's that we hold the key. And choose selfishness over selflessness. Reactive over proactive. Every time.


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UK White Paper on Magnetohydrodynamic (MHD) seismology of solar and heliospheric plasmas Magnetohydrodynamic (MHD) seismology uses naturally occurring MHD waves to infer plasma properties that are otherwise hard to measure, especially magnetic field strength and topology, electric currents, fine structuring, transport coefficients, and energy release. Across the solar atmosphere, heliosphere, and planetary magnetospheres, multi-wavelength remote sensing and in-situ observations of waves provide powerful diagnostics that can address major open problems including chromospheric and coronal heating, flare and eruption physics, solar wind acceleration, and space weather impacts. This White Paper sets out the case for a coordinated UK programme that couples high precision observations with advanced theory and numerical modelling, modern time-frequency methods for non-stationary signals, and machine learning approaches for detection, classification, and parameter inference from rapidly growing multi-instrument datasets. It outlines priority needs such as robust mode identification, reliable density and temperature constraints, multi line-of-sight capability, and models that include partial ionisation and non-adiabatic/collisionless effects, alongside enabling instrumentation such as next-generation spectropolarimetry, integral field units, and radio facilities including the Square Kilometre Array. The paper highlights the UK's strong track record and infrastructure, and argues that sustained investment will amplify UK scientific return through international partnerships and mission involvement, delivering transformative plasma diagnostics and downstream benefits for space weather forecasting and related applications.

#astro-ph.IM #astro-ph.EP #astro-ph.SR #physics.plasm-ph #physics.space-ph

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What happened when a solar superstorm hit Mars?

What happened when a solar superstorm hit Mars? What happened when a solar superstorm hit Mars? In May 2024, the sun released a powerful X flare that caused spacecraft to glitch ... and more. The p...

#Space

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A solar superstorm blasted Mars: Stunning Scientific Data A solar superstorm blasted Mars during the peak of Solar Cycle 25, providing NASA’s MAVEN and Curiosity with unprecedented radiation data...

#Planets #CuriosityRover #MarsExploration #MarsRadiation […]

[Original post on nasaspacenews.com]

Sun news: Two new sunspots end spotless three days

Sun news: A new large coronal hole emerged from the east Sun news for March 9, 2026: A new large coronal hole emerged from the east solar horizon. Soon its fast solar wind will be coming our way at...

#Sun

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Asteroid ‘Snowballs’: DART Images Reveal Material Exchange Between Binary Asteroids Archyde Scientists have discovered that asteroids in binary systems aren’t just orbiting each other – the...

#Technology #Comets #and #Meteors; #Solar #Flare; #Space #Missions […]

[Original post on archyde.com]

A Solar-Flare Survivable Device, Wild Explorations, and the Hidden Primitives of System Failure How a simple question led to the design of a hypothetical solar-flare-resilient device — and reveal...

#fault-tolerance #architecture #reliability-engineering #systems-engineering #design-systems […]

Sun news: Two new sunspots end spotless three days

Sun news: The sun is snoozing this weekend, so far Sun news for March 7, 2026: A low flare production day anticipate the sun taking a break this weekend. But a blob of solar stuff coming our way! T...

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Nagoya University Study: Stars Maintain Solar-Type Rotation Nagoya University researchers disprove 45-year-old theory on star rotation patterns. Detailed simulation reveals stars maintain solar-type rotation throughout life. Published in Nature Astronomy.

Nagoya University Study: Stars Maintain Solar-Type Rotation Nagoya University researchers disprove 45-year-old theory on star rotation patterns. Detailed simulation reveals stars maintain solar-typ...


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Get Ready for A Spectacular Aurora Borealis Show This Weekend: Here’s How To Catch It! A geomagnetic storm could make the Northern Lights visible as far south as the U.S. border this weekend. The...

#News

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$PERF Solar Flare: A Perfect Storm for Solar Stocks


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Sun news: Two new sunspots end spotless three days

Sun news: The sun is snoozing this weekend, so far Sun news for March 7, 2026: A low flare production day anticipate the sun taking a break this weekend. But a blob of solar stuff coming our way! T...

#Sun

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Examining the Effects of Magnetic Field Extrapolation on MHD Flare Simulations Solar flare simulations are commonly initialised using non-linear force free field (NLFF) extrapolations derived from photospheric vector magnetograms. However, the force free assumption neglects plasma forces and may limit the available free magnetic energy. In this work, we perform a controlled comparison of two three-dimensional resistive magnetohydrodynamic simulations of the X2.1-class flare that occurred on 2011 September 06 in NOAA Active Region 11283. The simulations differ only in their initial magnetic configuration: one is based on a conventional NLFF extrapolation, while the other employs a non-force free extrapolation that self-consistently incorporates plasma pressure and gravity. Both models are evolved in an identical stratified atmosphere using the same numerical framework, enabling direct assessment of how the initial magnetic assumptions influence flare dynamics and energetics. We find that the non-force free model undergoes more extensive magnetic restructuring and releases approximately twice as much magnetic energy ($\approx4.4 \times 10^{31}$ erg) as the NLFF case ($\approx2.3 \times 10^{31}$ erg), bringing the energy budget into closer agreement with expectations for X-class flares. Synthetic extreme ultraviolet emission in the 94A channel is computed for both simulations and compared with observations from the Solar Dynamics Observatory. The non-force free model produces a brighter and more spatially extended emission structure that more closely resembles the observed flare morphology and light curve. These results demonstrate that assumptions made in constructing the pre-flare coronal magnetic field can significantly affect flare energetics and observable signatures, and suggest that non-force free extrapolations provide a promising pathway toward more realistic data-constrained flare modelling.

#astro-ph.SR

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Study: Stellar Space Weather May Hinder Detection of Alien Signals New study: Stellar space weather may hinder detection of alien radio signals. Plasma turbulence near transmitting planets broadens signals, making detection harder. Published in The Astrophysical Journal.

Study: Stellar Space Weather May Hinder Detection of Alien Signals New study: Stellar space weather may hinder detection of alien radio signals. Plasma turbulence near transmitting planets broadens...


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Sun news: Two new sunspots end spotless three days

Sun news: Auroral displays possible tonight Sun news for March 6, 2026: Auroral displays possible tonight as fast solar wind from a large coronal hole start reaching us at Earth. The post Sun news:...

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but you see we HAD to do this RIGHT NOW because uhhhh iran was going to attack america i mean israel i mean america if israel attacked uhhh because trump didn't like negotiation state uhhh sola...


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Sun news: Two new sunspots end spotless three days

Sun news: Large coronal hole detected Sun news for March 5, 2026: A large coronal hole emerged from the northeast and it is now located at a position its fast solar wind is coming to us at Earth. T...

#Sun

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Scientists detect changes deep inside the Sun during solar cycles A 40-year study shows the Sun’s internal structure subtly shifts between quiet cycles, offering clues to future solar activity. T...


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Observations of a Twin Pair of Atypical Solar Flares and a Magnetic-reconnection Scenario We present observations and a magnetic-reconnection scenario of a twin pair of "atypical flares" that occurred on 2022 April 22 in a quadrupolar magnetic configuration formed by two active regions. The spatio-temporal evolution of the two flares is examined using images from the Atmospheric Imaging Assembly (AIA) onboard the Solar Dynamics Observatory (SDO), and from the ground-based Multi-Application Solar Telescope (MAST) in Udaipur, India. Characteristic of atypical flares and indicative of slipping reconnection, the ribbons of each flare (1) do not spread apart and (2) grow longer by sequential brightening of new flare kernels. The two atypical flares are homologous and plausibly have homologous triggers. There are four additional pairs of flare ribbons, each from a different flaring event that releases much less energy than the atypical flares. Two of these four pairs are produced by precursors, each possibly triggering one of the two atypical flares. The remaining two pairs accompany a filament activation, occurring twice within the span of the two atypical flares. Using a nonlinear force-free field (NLFFF) extrapolation model, we approximate the coronal magnetic field and find two quasi-separatrix layers (QSLs) that are nearly rooted in the flare ribbons. The observations and the extrapolated field together suggest a scenario in which the nearly simultaneous occurrence of many reconnections between magnetic field lines crossing at small angles (slipping reconnection) within each of the two QSLs produces the observed pair of atypical flares.

#astro-ph.SR

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Sun news: Two new sunspots end spotless three days

Sun news: Spectacular prominences in the north Sun news for March 3, 2026: The solar north horizon keeps producing prominences. Yesterday's prominence eruption hurled an immense amount of plasm...

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Sun news: Two new sunspots end spotless three days

Sun news: Spectacular prominences in the north Sun news for March 3, 2026: The solar north horizon keeps producing prominences. Yesterday's prominence eruption hurled an immense amount of plasm...

#Sun

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Comprehensive MHD modelling of ten successive CMEs driving a historic geomagnetic storm -- The 2024 Mothers Day event Interacting coronal mass ejections (CMEs) result in complex heliospheric structures that can dramatically enhance their geoeffectiveness compared to isolated events. A striking example of such complex structures is that of the Mothers Day event, which occurred during 10-14 May 2024, leading to the strongest geomagnetic storm in decades. It was driven by at least ten interacting CMEs accompanied by flare and filament eruptions from the solar western hemisphere. We aim to understand its solar and heliospheric origins, variation in plasma and magnetic characteristics, and predict its geoeffectiveness. Furthermore, we focus on bringing to the community the challenges and limitations faced during themodelling of such a complex, yet important environment. We use multi-point remote observations of CMEs and employ different methods to estimate their speeds and geometry. These parameters drive the 3D magnetohydrodynamic simulations of CME evolution and heliospheric propagation in the framework of the EUHFORIA model. The best-performing simulation reproduced the arrival time of the storm and peak intensity with a lead of 2 hours, and estimated the storm strength with about 70% accuracy. This work underscores the requirements and challenges involved in accurately modelling extreme events. The major bottleneck was to constrain the CME input parameters that dictate the accuracy of the data-driven simulations. Predicting the impacts of the complex heliospheric structures during this event required the modelling of the CME-CME interactions accurately. As a community, we need to invest more in observational infrastructure while improving the speed and accuracy of our MHD forecasting models.

#astro-ph.SR

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Three-dimensional mapping of coronal magnetic field and plasma parameters in a solar flare Vol. 707 9. The Sun and the Heliosphere Three-dimensional mapping of coronal magnetic field and plasma par...

#2026 #Highlights

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Sun news: Two new sunspots end spotless three days

Sun news: Solar north horizon keeps blasting Sun news for March 3, 2026: Solar north horizon keeps producing prominences. Yesterday's one hurled an immense amount of plasma into space. The post...

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Few Made It Out: A Multi-Messenger Study of an In Situ Solar Energetic Electron Event Driven by a Solar Jet When in situ solar energetic electron (SEE) events are closely associated with nonthermal flares, the escaping electron population is frequently observed to be much smaller than the nonthermal-radiation-emitting population near the solar surface. If a single accelerated population drives both signatures, the physical mechanism causing this severe deficit of upward-propagating electrons remains poorly understood.Focusing on one of the 2022 November 10--12 SEE events associated with recurrent solar jets and interplanetary type III radio bursts, we present a new, combined microwave--X-ray analysis using the Expanded Owens Valley Solar Array (EOVSA) and the Spectrometer/Telescope for Imaging X-rays (STIX) aboard Solar Orbiter. This synergy enables, for the first time for such an event, spatially resolved diagnostics over a broad energy spectrum of the near-Sun energetic electrons, complemented by in situ measurements made by spacecraft at multiple heliocentric longitudes and distances. Consistent with earlier results based on in situ and X-ray data, our results show that only 0.1--1\% of energetic electrons escape into interplanetary space. Crucially, the new microwave spectral imaging analysis suggests that energetic electrons are strongly concentrated in a compact region just above a mini-flare arcade at the base of the jet spire, and that their number density decreases by at least two orders of magnitude in the direction of the jet spire away from this region. This steep gradient, revealed by the microwave diagnostics, points to efficient local acceleration and trapping in the region analogous to the above-the-looptop ``magnetic bottle'' region in major eruptive flares, allowing only a small fraction of electrons to access open magnetic field lines and enter interplanetary space.

#astro-ph.SR

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Sun news: Two new sunspots end spotless three days

Sun news: Huge prominence near the solar north pole Sun news for March 2, 2026: A lifting filament finally exploded in a huge prominence in the northeast quadrant in the vicinity of the solar north...

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Delaying Artemis II to 2027? A New Forecast Warns of Dangerous Solar Activity New research on solar superflares warns that the Artemis 2 mission to the Moon might need to be delayed until late 2026...

#News

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Sun news: Two new sunspots end spotless three days

Sun news: Solar southeast replies with a strong jet Sun news for March 1, 2026: The solar southwest quadrant replied back with a strong jet to the prominence we reported yesterday in the southeast....

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