Articles tagged with Solar Flares
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Researchers built a two-stage warning system predicting solar flares within 48 hours via k-means clustering and neural networks. The model improved recall while increasing precision, but lost some positive sample information, affecting prediction accuracy.
Researchers used logistic regression and a recommendation algorithm to predict CME arrival times, achieving better results than using either method alone. The hybrid model improved forecast accuracy by providing a reference for similar historical events.
Researchers at New Jersey Institute of Technology have identified the precise location where solar flares accelerate particles to near-light speed. The discovery sheds light on fundamental processes of particle acceleration in the universe, offering new insights into space weather events.
Researchers at Dartmouth College have developed a new theoretical description of how the Hall effect determines the efficiency of magnetic reconnection. The study reveals that the Hall effect suppresses energy conversion from magnetic fields to plasma particles, enabling rapid energy release and explosive magnetic explosions in space.
Scientists at Sandia National Laboratories have developed a tiny device that can shunt excess electricity in a few billionths of a second, protecting the nation's electric grid from electromagnetic pulses. The diode operates at a record-breaking 6,400 volts and has potential to operate up to 20,000 volts.
Researchers at KTH Royal Institute of Technology discovered a new way Earth's magnetic field produces plasma jets, which can weaken the planet's first line of defense. The study used NASA's Magnetospheric Multiscale Mission satellites to track the formation and origin of these downstream jets.
Astronomers at Harvard & Smithsonian Center for Astrophysics offer a new explanation for mysterious downflows in solar flares, which are not generated by magnetic reconnection. Instead, they form from the interaction of two fluids with different densities, resulting in 'dark finger-like voids'.
A team of researchers from Lund University analyzed ice cores from Greenland and Antarctica to discover a massive solar storm occurring during a quiet phase about 9,200 years ago. The study challenges the current understanding that solar storms are more likely to occur during active phases of the sun.
Astronomers observed a young, sun-like star ejecting a massive burst of energy and charged particles, potentially bad news for satellites and power grids. The study suggests that similar events could have shaped planets like Earth and Mars over billions of years.
A supermassive filament eruption has been observed on a Sun-like star, EK Draconis. The filament was large and fast, posing severe impacts on planetary environments. This finding sheds light on the origins of life on Earth and potential life on other planets.
Researchers at Skoltech have identified a favorable window of opportunity for manned Mars missions in the mid-2030s. The study suggests that launching during the decaying phase of solar activity can help shield astronauts from cosmic rays, allowing for longer flight durations.
A research team from Kyoto University assessed eight flight routes during five ground level enhancements to evaluate the risks of solar particle events. The study found that the maximum flight route dose and dose rate arising from major GLE events would need to exceed 1.0 mSv and 80 µSv/h, respectively, for countermeasures to be deemed...
Researchers discovered unique changes to the ionospheric D-region triggered by thunderstorms and solar flares. These findings have implications for improving long-range communications like GPS.
The study revealed key physics behind primary energy release, particle acceleration, and transportation in solar radio bursts. MUSER provides a unique tool for measuring solar magnetic fields and tracing dynamic evolution of energetic electrons.
Scientists have found that part of the acoustic energy released from a solar flare emanated from about 1,000 kilometers beneath the solar surface, suggesting that flares can create seismic activity. This discovery may lead to the development of a new method to forecast the size and severity of solar flares.
A physics-based model predicts imminent large solar flares with high accuracy, using a double-arc instability theory. The kappa scheme has been tested on 200 active regions and demonstrated its effectiveness in predicting solar flare occurrence and location.
Scientists developed a new model using NASA's Solar Dynamics Observatory data, predicting seven of the Sun's biggest flares from the last solar cycle. The model identified key characteristics in active regions, including magnetic reconnection and unstable arches, to predict massive flares.
A new physics-based model, κ-scheme, predicts imminent large solar flares more reliably than previous methods. The model forecasts solar flares up to 20 hours in advance and identifies their location and energy release.
A recent study published in Nature Astronomy reveals the location of energy release in solar eruptions, finding that relativistic electrons are accelerated in a specific region known as the magnetic bottle. This breakthrough confirms a theoretical model and provides new insights into the complex process of solar flares.
A team of researchers has presented a new look at the 'central engine' powering a massive solar flare, revealing an enormous electric current sheet and magnetic bottle-like structure. The study offers the first measurements characterizing the magnetic field and particles at the heart of the explosion.
Researchers at KU Leuven have created a self-consistent simulation of solar flares, allowing them to calculate the energy conversion efficiency. This breakthrough enables the prediction of key aspects of space weather phenomena, including the Northern Lights.
A new warning system, WASAVIES, can estimate radiation doses due to solar energetic particles (SEP) up to 100 km above the ground in real-time. This system enables aircrew radiation dose monitoring and provides information for aviation operation management.
Researchers have developed a simulation model that shows the potential for fast magnetic reconnection to occur in partially ionized plasma, a key region in interstellar space. This finding could help understand how reconnection may affect star formation and provide insights into the physics of magnetically reconnecting plasmas.
Researchers discovered hints of the sun's internal clock behaving erratically, switching between normal and alternate states. The team found intriguing discrepancies in the sun's magnetic fields that could provide clues to its internal behavior.
Researchers used machine learning algorithms to classify solar active regions, discovering new features such as the persistence of flare-producing active regions before and after a flare. The study also identified the build-up of electrical currents before a solar flare event.
Science-oriented CubeSats like MinXSS can collect valuable data on solar flares and the Sun's atmosphere, consistent with large satellites. The success of these small satellites has led to new funding opportunities for CubeSat science missions.
A team of scientists developed a single, cohesive computer model to simulate the entire life cycle of a solar flare, from energy buildup to explosive release. The comprehensive model captures the formation of tangled magnetic field lines and roiling sunspots, which can impact Earth's power grids, communications networks, and astronauts.
Scientists at New Jersey Institute of Technology's Owens Valley Solar Array (EOVSA) captured potent solar flares in multiple radio frequencies for the first time. The new data reveals that high-energy particles are promptly transported throughout the explosive magnetic field, shedding light on the acceleration process.
Researchers have developed a new laboratory method to study magnetic reconnection, a process giving rise to solar flares and northern lights. The technique enables precise investigation of this phenomenon without overheating the plasma, opening doors to better understanding solar flares' impact on communication systems.
Scientists used NASA's Solar Dynamics Observatory to study a massive sunspot group and found that a magnetic cage prevented a coronal mass ejection (CME) from erupting. The model showed that the conflict between the magnetic rope and cage led to a powerful X-class flare instead.
Scientists identified a confining 'cage' in which a magnetic rope forms, causing solar eruptions. The resistance of this cage determines the power and type of flare. A new model predicts maximum energy release during solar flares, potentially devastating for Earth's systems.
Researchers studied spacecraft data to understand magnetic reconnection, a phenomenon that breaks standard laws governing charged particles. The study confirmed theoretical descriptions of magnetic reconnection, which is linked to celestial events such as black holes, pulsars, and supernovas.
Scientists have discovered oscillations in solar flares that exhibit pulses or oscillations in the amount of energy being sent out. These findings offer new insights into the origins of massive solar flares and their effects on space weather.
The proposed FOXSI mission will study the physical mechanisms behind solar flares and their impact on Earth. By analyzing X-ray radiation and particle acceleration, scientists aim to gain a deeper understanding of space weather and its effects on satellites and communications systems.
A solar flare was recorded by a 17-year-old amateur astronomer, Juan Valderrama y Aguilar, from Madrid on September 10, 1886. The event is the third white-light solar flare in history and marks a significant discovery in solar physics.
A NASA sounding rocket instrument has spotted signatures of tiny solar flares, known as nanoflares, in the Sun's outer atmosphere. These tiny energy releases could be contributing to the high temperatures observed in the corona, with further research needed to determine their exact impact.
A significant solar flare occurred on September 10, 2017, peaking at 12:06 p.m. EDT, causing disturbances in the atmosphere where GPS and communications signals travel. The X8.2-class flare is part of a series of flares from Active Region 2673, which was identified on August 29.
The sun emitted two mid-level solar flares on Sept. 7, 2017, peaking at M7.3 and X1.3, respectively. These flares are part of the fourth and fifth sizable events from the same active region since Sept. 4.
Two significant solar flares were captured by NASA's Solar Dynamics Observatory on September 6, 2017, with the largest flare peaking at an X9.3 classification. This event had a significant impact on Earth's atmosphere and GPS signals.
A mid-level solar flare was captured by NASA's Solar Dynamics Observatory on September 4, 2017. The M5.5 class flare may cause disturbances in the atmosphere where GPS and communications signals travel.
A sunspot, dubbed AR12665, was tracked by NASA's satellites as it rotated into view on July 5, 2017. The active region produced several solar flares, a coronal mass ejection, and a solar energetic particle event over its 13-day journey.
A NASA model has simulated stealth solar storms from the sun, showing how slow and quiet processes can create massive magnetic field twists that speed out into space without warning. The models match space-based observations, revealing a complex process that generates energy over two weeks.
Researchers at New Jersey Institute of Technology are investigating solar physics to improve prediction and countermeasures for explosive solar events. They're using high-resolution radio data from state-of-the-art telescopes like Owens Valley Solar Array.
Researchers at Kyoto University and Japan's National Institute of Polar Research used ancient texts to track past solar events, including prolonged auroras. They found clear patterns in solar activity and discovered that auroras were more prevalent during maximal solar cycles.
NASA's Solar Dynamics Observatory captured images of three mid-level solar flares on April 2-3, 2017. The flares had M-class intensities, with the largest being an M5.8 flare.
Researchers discovered Rossby waves on the sun, similar to jet streams on Earth, which may allow for long-term space weather forecasting. The waves drive solar flares and coronal mass ejections, enabling predictions of flare occurrences.
Researchers use new telescope images to reveal the emergence of small-scale magnetic fields in the corona, which may trigger solar flares. The study suggests that these magnetic field structures are linked to the onset of a main flare and could help predict flares with more precision.
A NASA-funded balloon carrying a telescope was left on the ice in Antarctica for a year before its instruments were recovered. The GRIPS project studied high-energy particles generated by solar flares, with findings providing new insights into these giant eruptions on the sun.
The Fermi telescope has observed high-energy light from solar eruptions on the far side of the sun, which should block direct light. This allows scientists to study how charged particles are accelerated to nearly the speed of light during solar flares.
Researchers discovered that solar flares accelerate sunspot rotation speeds, revealing a complex relationship between the Sun's magnetic fields. This phenomenon challenges current theories on solar flares and has significant implications for understanding energy transport in eruptions.
The MinXSS CubeSat collects data on soft X-rays, providing insight into solar flare physics and temperature, density, and abundance of solar flare material. This information is crucial for understanding how flares evolve and heat the sun's atmosphere.
A MSU physicist developed a new model that predicts the speed of solar plasma during solar flares, likening it to the path traveled by a thrown baseball. The model has implications for understanding how solar flares evolve and providing better ways to predict them.
The MinXSS CubeSat was deployed from the ISS in 2016 to study solar flares and their effects on Earth's upper atmosphere. The mission aims to understand the physics behind these events, which can disrupt radio and GPS signals.
Scientists at NJIT's Big Bear Solar Observatory captured unprecedented images of a recent solar flare, including bright flare ribbons and coronal rain. These observations provide new insights into the complex dynamics of the Sun's atmosphere and the massive eruptions on its surface.
Scientists observed a current sheet during a December 2013 solar flare, confirming the role of magnetic reconnection in solar flares. The detailed measurements from three NASA missions provide unprecedented insight into the complex physics behind solar eruptions.
The European Solar Telescope (EST) has been selected for a strategic scientific installation in Europe, aimed at studying solar phenomena with unprecedented accuracy. The four-meter diameter telescope will enable researchers to understand the magnetic activity of the sun and violent eruptions affecting terrestrial communications.
The GRIPS balloon mission observes extremely high-energy radiation released by solar flares, pinpointing precise times and locations of gamma ray emission. The team's instrument sees this emission three times more sharply than any previous instrument.
Astronomers have confirmed a proposed explanation for how solar flares accelerate charged particles to nearly the speed of light using the upgraded VLA radio telescope. The new observations support the idea that a termination shock is responsible for accelerating electrons, with results closely matching computer simulations.
Researchers have imaged a shock and its time evolution during a long-lasting solar flare, demonstrating its role in accelerating particles. The study used the Karl G. Jansky Very Large Array to capture over 40,000 individual images per second, revealing the dynamic evolution of the termination shock.
Researchers have discovered a stellar superflare on KIC9655129 with wave patterns similar to those observed in solar flares, suggesting the potential for the Sun to also produce a superflare. This could lead to catastrophic consequences, including power blackouts and disruptions to GPS and radio communication systems.