Articles tagged with Solar Flares
The TESS24 conference will focus on the impact of space weather on various systems, including satellites, GPS, and power grids. Experts will discuss new predictions for Solar Cycle 25's peak intensity and the possibility of superflares happening every 6,000 years.
Researchers led by Bruno Arsioli have observed a non-uniform distribution of high-energy photons in the Sun's gamma-ray emissions, with polar regions emitting more radiation than expected. This finding suggests a possible link between cosmic rays and the solar magnetic field, which could inform space weather forecasts.
Researchers have cataloged nearly 1400 slow-rising flares using Chandrayaan-2 data, revealing a significant increase in the number of slow-building flares compared to previous decades. The study suggests that solar flares may exhibit different behaviors, including varying rates of rise and fall.
Researchers have discovered a multi-planet system that provides a rare glimpse into the formation of planets around a young star. The system consists of six confirmed planets and potentially a seventh, all forming under similar conditions at an age of just 700 million years.
A new relationship between the Sun's magnetic field and its sunspot cycle has been discovered, enabling scientists to predict when the peak in solar activity will occur. The analysis indicates that the maximum intensity of solar cycle 25 is imminent and likely to occur within a year.
Researchers from NJIT-CSTR have discovered an extraordinary aurora-like display occurring 40,000 km above a sunspot. The novel radio emission shares characteristics with planetary magnetospheres and potentially opens new avenues for understanding similar phenomena in distant stars with large starspots.
Researchers found distinct similarities between starquakes and earthquakes, but a difference with solar flares. The team analyzed nearly 7,000 bursts from three repeater FRB sources, comparing them to earthquake and solar flare data.
Researchers have identified a massive solar storm 14,300 years ago in ancient tree rings, which could be catastrophic for modern technological society. The study warns of the importance of understanding such storms to protect global communications and energy infrastructure.
Astronomers have discovered a surprising link between Neptune's cloud abundance and the 11-year solar cycle. The study found that two years after the solar cycle's peak, clouds on Neptune increase in number. The team believes UV radiation from the Sun may be triggering photochemical reactions that produce clouds.
Researchers suggest a massive young planet is burning up in a superheated soup of raw material swirling around it, causing the star to flare. The simulation reveals a 'disc inferno' process where the planet's atmosphere ignites, feeding the star and making it shine brighter.
A research team from USTC found that the pre-emergence magnetic rope structure undergoes a complex series of stripping, disintegration and reconstruction during the outburst. This study reveals the details of the process of three-dimensional magnetic reconnection and its role in forming coronal mass ejections.
A New Jersey Institute of Technology research team has been awarded a $4.64 million grant to continue studying the Sun's explosive activity at Big Bear Solar Observatory. The team will use the observatory's unique imaging capabilities and stable seeing conditions to investigate solar phenomenon as activity on the Sun ramps up.
Researchers used simulations to analyze the Lyman Continuum spectrum in dozens of simulated solar flares, confirming its connection to plasma temperature. The study found that analysis of this spectrum can be used for diagnosis of the solar plasma during solar storms.
A team of astronomers detected a massive superflare and prominence eruption on the star V1355 Orionis, which was capable of breaking free from the star's gravity and developing into Coronal Mass Ejections. The event released trillions of tons of material, making it one of the most massive ever observed.
A team of researchers has uncovered the source location of a 'heartbeat-like' radio signal in a C-class solar flare, more than 5,000 kilometers above the Sun's surface. The discovery sheds light on the physical processes behind energy release and dissipation in solar flares.
Researchers found small signals in the corona that can identify regions more likely to produce solar flares. The new database of Sun images makes it easier for scientists to study active regions and develop tools to predict solar flares.
A University of Queensland study analyzed tree ring data to understand cosmic radiation 'storms', known as Miyake Events. The research suggests that these events are not correlated with sunspot activity and may be a kind of astrophysical 'storm' or outburst.
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.