Articles tagged with Novae
Astronomers discovered high-speed 'bullets' of oxygen-rich gas shooting out of the only known helium nova in Milky Way, confirming binary system responsible for rare stellar explosion. The discovery provides unprecedented opportunity to study one of universe's rarest types of stellar explosions.
Researchers at Texas Tech University used spectroscopy and audio sonification to study the spectacular explosion of NovaV612 Scuti. The team found evidence that gas increased in velocity with each major jump in brightness, revealing new details about the event's dynamics.
Researchers used deep learning to model energy release during r-process nucleosynthesis in hydrodynamic simulations, gaining new insights into element formation. The results suggest that r-process heating is an important effect that should be better accounted for in future modeling.
Scientists have discovered a rare superkilonova event, which may have produced gravitational waves and light, as detected by LIGO and Virgo. The candidate kilonova AT2025ulz showed signs of a supernova before fading and brightening again in red wavelengths.
Researchers led by Texas Tech University's Elias Aydi used cutting-edge interferometry to directly image two stellar explosions, also known as novae. The study reveals multiple outflows of material and in some cases, dramatic delays in the ejection process, challenging long-held views on these cosmic blasts.
The study reveals multiple outflows of material and dramatic delays in the ejection process, challenging long-held views about nova eruptions. Images captured using interferometry allow scientists to directly observe the rapidly evolving explosions.
Astronomers detected phosphine in the atmosphere of a cool, ancient brown dwarf named Wolf 1130C using the James Webb Space Telescope. The discovery challenges previous theories and suggests that phosphorus chemistry might be more complex than initially thought.
Kilonova Seekers, a public participation project, has announced its first major discovery - a bright exploding star named GOTO0650. The team collected highly complete dataset on the star through fast response from volunteers, suggesting it's a period bouncer and rare object to find in wide-field imaging surveys.
Astronomers observe an ultra-hot nova, LMC68, using Gemini South's FLAMINGOS-2 instrument, detecting ionized silicon atoms. The signal is unprecedented, shining up to 100 times brighter than the Sun. This is the first near-infrared spectroscopic observation of an extragalactic recurrent nova.
Astronomers using NASA's Hubble Space Telescope discovered that the blowtorch-like jet from a supermassive black hole at the core of a huge galaxy causes stars to erupt along its trajectory. The finding suggests that there is something missing from our understanding of how black hole jets interact with their surroundings.
Astronomers propose a new model to explain the origin of phosphorus, with ONe novae as a major source. The theory predicts a large amount of phosphorus will be released in these events, which would have been readily available when the Solar System formed.
Classical novae are found to be more complicated than previously thought, emitting non-thermal energy and displaying hyper-fast evolution. The discovery uses Very Long Baseline Array (VLBA) to provide a detailed picture of the main complication, expanding our understanding of these events.
Research finds that comprehensive care services delivered by Canadian family physicians have decreased over 20 years, with no difference in decline between early-career and experienced physicians. This suggests that factors other than training or interest are driving the decrease.
Researchers found that kilonovae, caused by neutron star collisions, produce spherical explosions with symmetrical shapes. The discovery may provide a new key to fundamental physics and measuring the Universe's age.
Researchers at Liverpool John Moores University and the University of Montpellier have developed an early warning system for massive star supernovae. These stars will suddenly dim by a factor of 100 in visible light as they accumulate material around them, forming a 'cocoon' that obscures their light.
Scientists have developed a new solar-powered laser with improved conversion efficiency, enabling more stable and efficient space-based energy generation. The design features four mirrors and laser rods, allowing for precise control over the pump cavity and minimizing thermal stress effects.
Two large studies found a link between high consumption of ultra-processed foods and increased risks of cardiovascular disease, bowel cancer, and death. The findings support policies limiting ultra-processed foods and promote eating unprocessed or minimally-processed foods for improved public health.
Astronomers observed the fastest nova ever recorded, which drew attention to an unusual star. The research team studied its many baffling traits, including a pulsing light pattern, and may find answers to questions about our solar system's chemistry, star death, and universe evolution.
A team of astronomers has discovered micronovae, extremely powerful events that occur on the surface of white dwarfs and can burn through billions of kilograms of material in a few hours. These new stellar explosions challenge our understanding of thermonuclear reactions in stars and may be more abundant than previously thought.
The MAGIC telescopes detected gamma rays with energies of 250 gigaelectronvolts from the RS Ophiuchi nova, a hundred billion times more energetic than visible light. This suggests that nova outbursts are a source of cosmic rays, specifically accelerated protons and nuclei of hydrogen atoms.
Research reveals a cosmic particle acceleration process in a stellar nova, accelerating particles to extreme energies. The observation suggests that the acceleration process could be efficient in supernovae, providing new insights into astrophysics.
A new study found a low rate of lithium production in a classical nova, indicating diversity within these events. This discovery suggests that other objects, such as supernovae, may also contribute to lithium production in the Universe.
A study by ITQB NOVA researchers found that asymptomatic adults in Portugal can carry pneumococci for several months, with a median duration of almost two months. This suggests that some adults may act as reservoirs of the bacterium, potentially impacting herd immunity.
Researchers from ITQB NOVA have characterized a therapeutic target with great potential and built its first three-dimensional model. Silencing the nsp14 protein makes it easier for the organism to identify the virus' messenger RNA and activate the immune system.
A Canadian pilot study on gene therapy for Fabry disease shows the treatment is working and safe, enabling patients to produce normal levels of the defective enzyme. The trial, led by Dr. Aneal Khan, treated five men with a single dose of gene therapy, which resulted in stable patients who are no longer requiring replacement therapy.
A team of astronomers using Gemini North's GNIRS instrument discovered that CK Vulpeculae, a bright new star in 1670, is approximately five times farther away and has ejected gas at much higher speeds than previously reported. The new findings suggest the explosion was far more violent, releasing roughly 25 times more energy than a nova.
Researchers at ITQB NOVA and Institut Pasteur have identified flavodiiron and rubrerythrin proteins as essential for C. difficile's ability to tolerate oxygen damage, a key step towards understanding its mechanisms of resistance.
Post-tropical cyclone Teddy is generating heavy rainfall over eastern Canada, causing destructive waves and strong winds. NASA estimated rainfall rates around the center of circulation at 5-15 mm per hour, with heavier precipitation expected throughout most of the storm.
Hurricane Teddy is threatening Eastern Canada with powerful storms and cold cloud top temperatures indicating strong storms. The hurricane's forecast track predicts it will move over Nova Scotia on Wednesday, bringing tropical-storm-force winds and large swells.
Scientists have made key discovery using pre-solar grains found in primitive meteorites, providing new insights into stellar explosions and element formation. The new method involves analyzing chemical and isotopic composition of grains to study nuclear reactions like proton capture on chlorine.
A study led by Arizona State University researchers found that classical novae are galactic producers of lithium. The team used simulations, observations, and laboratory studies to determine the role of these stellar explosions.
Researchers found a strong correlation between air temperature and Terra Nova Bay polynya area, with lower temperatures showing stronger effects. The study provides new insights into the complex interactions between atmospheric conditions and Antarctic ice cover.
The BRITE Constellation has recorded a complete nova eruption, offering a unique perspective on the phenomenon. The data provides valuable insights into shock-powered optical emission in novae, shedding light on the underlying mechanisms of star explosions.
A team of international astronomers led by MSU's Elias Aydi found that shocks power most of a nova's brightness, contradicting previous theories. The research uses unprecedented space observations to provide direct evidence for shock-powered optical emission in a nova.
A team of researchers has found that shocks from a nova explosion cause most of its brightness, rather than nuclear burning on the surface of the white dwarf. The study, published in Nature Astronomy, used unprecedented space observations to detect bright gamma-rays and optical data from the star V906 Carinae.
A trio of satellites, including NASA's Fermi and NuSTAR space telescopes, observed a nova outburst in 2018 and captured direct evidence that most of the explosion's visible light arose from shock waves. The data confirmed that shock waves play a major role in powering some stellar explosions.
A new study models the life cycle of cataclysmic binaries, confirming that observable novae are just a small fraction of these systems. The research shows that most binaries spend 90% of their lifetimes in a detached state, waiting to be detected.
A new tool has been developed to help manage the Nova Scotia lobster fishery in the face of climate change. The tool incorporates projected changes in ocean climate onto a geographic management area, enabling fishermen and resource managers to plan for future sustainability.
Physicists Pawel Pieranski and Maria Helena Godinho have found that the 'dowser texture' in nematic liquid crystals responds differently to electric fields in various materials. This phenomenon, known as electro-osmosis, enables detection of subtle electrical effects.
A team of researchers discovered a grain of dust forged in a stellar explosion, challenging current theories about how stars seed the universe. The grain, LAP-149, is highly enriched in carbon-13, providing evidence that novae contributed to the building blocks of our solar system.
Researchers deploy underwater receivers to detect tagged bluefin tuna, providing insights into their behavior, migration patterns, and natural mortality rates. The technology sheds light on the species' survival, informing sustainable management of their populations.
Astronomers have discovered evidence of a gigantic remnant surrounding an exploding star, indicating that it erupts regularly on a massive scale for millions of years. The team found a super-remnant measuring almost 400 light years across, which is unusually large compared to other known nova systems.
The Meridies Medieval History research group at the University of Cordoba collaborated with chemists to replicate five medieval inks. The team analyzed handwritten recipes, translated texts, and analyzed chemical reactions to recreate the exact same inks used six centuries ago.
Astronomers have found the first evidence of a 'super-remnant' formed from repeated star explosions in the Andromeda Galaxy. The remnant measures almost 400 light years across and is associated with the most frequent nova explosions known, occurring once a year.
A 2018 study from Nova Scotia found that seizures of illicit cigarettes decreased significantly between 2007-08 and 2017-18, with no statistically significant increase after the 2015 menthol ban. The prevalence of illegal tobacco in the province also decreased from 30% to less than 10%.
Researchers confirm collision of white dwarf and brown dwarf stars using ALMA observations. The debris from the explosion reveals the presence of lithium and unusual element isotopes.
The NOvA collaboration has observed strong evidence of muon antineutrinos oscillating into electron antineutrinos, a phenomenon that has never been unambiguously seen. This result comes from the first run with antineutrinos and provides insights into the properties of neutrinos and antineutrinos.
Researchers at Université de Limoges developed a compact, optical fibre-based laser source that rivals synchrotron facilities in performing infrared spectromicroscopy. This breakthrough enables accurate chemical imaging of biological tissues with high precision, paving the way for early cancer diagnosis and treatment.
Patients with acute cardiac syndrome and cardiogenic shock living far from Halifax have significantly lower survival rates due to limited access to cardiac catheterization. The study found that patients with direct access to invasive care had a mortality rate of 41.7%, compared to 83.5% for those without direct access.
Astronomers have discovered the most luminous nova ever seen in a nearby galaxy, using data from the Swift satellite observatory. The study provides insights into white dwarf eruptions, including the possibility of a supernova explosion in the future.
A team of researchers has recovered the location of a nova that was first spotted by Korean astrologers in 1437, providing evidence for a long-term life cycle with multiple stages. The study supports the idea that novae undergo smaller-scale eruptions after fading to obscurity for thousands of years.
A new study published in CMAJ found that sedentary time increases the risk of death for middle-aged and older people who are frail and inactive. However, this association was not observed among nonfrail adults who were inactive. The study suggests that physicians should stress the harms of inactivity with patients to encourage movement.
Scientists at Michigan State University are studying the atomic nucleus of exploding stars to gain insights into their evolution and the creation of elements in our universe. They have made breakthroughs in understanding the production of rare isotopes like aluminum-26, which could shed light on the amount of water on Earth.
Scientists have discovered incredibly rapid gas flares from a white dwarf binary star system for the first time. The unusual activity was observed at radio wavelengths in SS Cyg, one of the brightest variable stars in the constellation of Cygnus.
A 12-year field experiment in Nova Scotia found optimal fertilizer rates of 35 kg·ha-1 N, 40 kg·ha-1 P, and 30 kg·ha-1 K to maximize floral bud number, berries per stem, and berry yield. Higher fertilizers rates increased net profits by $490/ha.
Recent neutrino discoveries by T2K and NOvA experiments at Colorado State University provide evidence of oscillations between neutrinos and antineutrinos, violating a longstanding physics principle. The findings hint at the universe's matter-antimatter imbalance and offer opportunities to study the weak nuclear force.
The NOvA collaboration has made a groundbreaking discovery that suggests the flavor and mass correlation of neutrinos may be more complex than previously thought. The data collected by the NOvA experiment indicates that one of the three neutrino mass states might not include equal parts of muon and tau flavor, as previously assumed.
Researchers found that despite a ban on menthol cigarettes, similar products with green coloring and 'smooth taste redesigned without menthol' are being marketed to undermine the effectiveness of the ban. The study suggests that these tactics could have an adverse impact on public health.
The Boreal felt lichen, a critically endangered species, is expected to decline by 49% within 25 years if conservation efforts are not increased. Human impacts such as air pollution and habitat destruction are major contributors to the decline.
The NOvA particle physics experiment has successfully detected the transformation of muon-type neutrinos into electron-type neutrinos, a process known as neutrino oscillation. This discovery provides valuable insights into the subatomic world and the evolution of the universe.