Articles tagged with Supernovae
Researchers found a dying star that fizzled out and left behind a black hole, shedding light on why massive stars rarely explode as supernovae. The discovery could help explain the origins of supermassive black holes.
Astronomers discovered a massive star that collapsed into a black hole without exploding as a supernova, challenging the typical view of star formation. The study suggests that up to 30% of massive stars may quietly collapse into black holes without producing a supernova.
Astronomers using the VLA discovered a bright new object near Cygnus A's core, suggesting it could be either a rare supernova explosion or an outburst from a second supermassive black hole. The object's characteristics indicate it may have formed when the galaxy merged with another.
The Gauss Centre for Supercomputing approved 30 large-scale projects receiving 2.1 billion core hours, breaking records in allocation time and proposals received. Researchers studied earth sciences, chemistry, particle physics, and more, securing massive allocations to advance scientific knowledge.
Astronomers have discovered a unique star in the constellation of Lacerta, which is millions of times closer to Earth than the galaxy NGC 7250, allowing it to overpower its light
Astronomers report the discovery of a binary solar-type star inside the supernova remnant RCW 86, with calcium abundance exceeding the solar one by a factor of six. This finding suggests that the supernova might belong to the rare type of calcium-rich supernovae.
The supernova has continued to fascinate astronomers with its spectacular light show, located in the nearby Large Magellanic Cloud. Recent studies using NASA's Hubble Space Telescope and Chandra X-ray Observatory have provided unique insight into the early stages of gas dispersal after a star's death.
Researchers from Ruhr-Universität Bochum used data from the Astrophysical Journal to determine the age of the star, finding it had formed at the same time as our galaxy. The dual star system's companion star transferred matter to 49 Lib, causing incorrect age estimates.
A spinning supermassive black hole destroyed a Sun-like star, causing the most luminous supernova ever recorded. The observation is attributed to a tidal disruption event rather than an extraordinary bright supernova.
A new study published in Nature Communications presents evidence suggesting that a low-mass supernova played a crucial role in the formation of our solar system. The research team analyzed short-lived radioactive nuclei found in meteorites and discovered unique 'fingerprints' that point to a low-mass supernova as the trigger.
A team led by Professor Yong-Zhong Qian uses new models and meteorite evidence to show a low-mass supernova triggered the formation of our solar system. The study found that short-lived nuclei in meteorites are consistent with a low-mass supernova trigger, supporting the theory that this event played a key role in solar system formation.
The Super-Kamiokande detector is equipped with a new computer system to monitor neutrinos from nearby supernovae in real-time. This allows scientists to assess the significance of signals within minutes and issue early warnings to research centers worldwide.
Researchers find evidence of two separate eruptions in the mid-13th and mid-16th centuries, and another in the 19th century, revealing a more violent history for the star system. The team uses NASA's Hubble Space Telescope images to track the movement of gas ejected by Eta Carinae.
Researchers found a time-resolved supernova signal in biogenically produced crystals from Pacific Ocean sediment cores, indicating the solar system spent 1 million years transiting through a supernova's debris. The signal was first detectable at 2.7 million years ago and ended around 1.7 million years ago.
Astronomers have peer into a nearby star's past, using low-frequency radio observations to fine-tune our understanding of stellar explosions. The team found the red supergiant lost matter at a slower rate and generated slower winds, improving knowledge of space composition.
Researchers have found a unique triple-bubble structure in the interstellar medium of galaxy M33, consisting of three concentric supernova shells. This discovery provides insights into the complex feedback processes that govern star formation and the dissemination of metals produced in massive stars.
A new study reveals that neutrinos produced in the core of a supernova are highly localized compared to all other known sources. Theoretical wave packet size is irrelevant in simpler cases, providing a more solid foundation for standard neutrino behavior theories.
A study suggests that ancient supernovae caused a significant increase in cosmic radiation on Earth, which may have boosted mutation rates and contributed to cancer. The researchers also found that this increased radiation could have led to a minor mass extinction event around 2.59 million years ago.
The Crab Nebula is home to a spinning neutron star with a 'heartbeat' radiation signature, emitting clock-like pulses of energy. The neutron star is surrounded by expanding debris and glowing gas, revealing the intricate details of this cosmic object.
Scientists have discovered a nearby supernova's ash continuing to fall on Earth, with rare iron-60 isotope detected in cosmic rays. The findings suggest another supernova occurred near the previous one, contributing to the ongoing acceleration of these nuclei.
A rare type of iron nucleus, with a half-life of 2.6 million years, serves as a 'clock' to measure the distance between Earth and the source of galactic cosmic rays. The data suggest that nearby supernovae in massive star clusters are responsible for creating these nuclei.
Researchers at TUM and USA colleagues have discovered unusually high concentrations of radioactive 60Fe in lunar samples from Apollo missions 12, 15 and 16. This evidence supports a supernova hypothesis, suggesting that one or more explosive events occurred close to our solar system approximately two million years ago.
An international team found radioactive iron-60 in sediment and crust samples from the Pacific, Atlantic, and Indian Oceans, indicating a series of massive supernovae near our solar system. The debris is dated to 3.2-1.7 million years ago and coincides with Earth's cooling period.
New research uses iron-60 isotopes to prove ancient supernovae buffeted Earth, dating events between 1.7 million and 8.7 million years ago. Scientists estimate potential effects on human evolution and search for signs of impact on the planet.
Scientists found that magnetars could boost the energy source of super-luminous supernovae, which are 10-100 times brighter than normal supernovae. Calculations suggest that rapidly spinning magnetars could power these extreme events.
Researchers discovered the most luminous supernova yet observed in an unusual host galaxy, providing insights into super-luminous supernovae. The record-breaking ASASSN-15lh was found to mimic hydrogen-poor SLSNe's behavior but with greater extremes, sparking speculation about its extraordinary emission.
The newly discovered super-luminous supernova, ASAS-SN-15lh, is the most luminous ever recorded, outshining the entire Milky Way galaxy. Its unusual characteristics challenge current theories on magnetar-powered explosions.
Researchers are investigating an explosion brighter than the Milky Way, with a tiny magnetar at its center. The object could be a millisecond magnetar spinning 1,000 times per second, shedding light on superluminous supernovae.
A team of international researchers employed powerful computer simulations to study the creation of jets in dying stars. Their work sheds light on an explosive chain reaction that helps form the structure of the universe. The simulations revealed a highly turbulent place, where magnetorotational instability drives the formation of jets.
Researchers used supercomputer simulations to understand how magnetic fields amplify in collapsing stars, enabling jets that power supernovae and gamma-ray bursts. The study found a dynamo process creates large-scale fields needed for these explosions.
A team from ASU and UNC aims to resolve uncertainties in the nuclear fusion process that creates elements forged by stars. They will investigate the range of elements produced by a star, including calcium and carbon, to determine their variation in output.
Researchers from Osaka University successfully created highly unusual plasma composed of hollow atoms using ultra-bright X-ray sources. This discovery sheds light on extreme state atoms and may lead to industrial applications such as non-destructive x-ray testing and new material construction.
The University of Maryland has been awarded $4.5 million to participate in the GROWTH network, which aims to improve understanding of cosmic transients. Undergraduates will analyze telescope data from the network using flipped learning environments and active-learning techniques.
The Global Relay of Observatories Watching Transients Happen (GROWTH) project aims to improve understanding of cosmic transients by extending night-time observing hours. The network, supported by NSF's PIRE program, enables researchers to monitor rare events like neutron star mergers and heavy element synthesis.
A study by Carnegie's Alan Boss and Sandra Keiser suggests that a shock wave from a supernova may have induced the spin of our Solar System, enabling the formation of a disk around our proto-Sun. This finding challenges previous theories and provides new insights into the earliest phases of planet formation.
Scientists use archived data from NASA's Hubble Space Telescope to study 13 unusual exploding stars, known as supernovae. These young stars were ejected from their galaxies at high speeds, and astronomers believe that supermassive black holes in merging galaxies played a key role in their ejection.
A new study suggests that rogue supernovas that explode in deep space were likely kicked out of their galaxies at high speeds and then ejected into space by the gravitational pull of a binary black hole. The study, published in Monthly Notices of the Royal Astronomical Society, used data from NASA's Hubble Space Telescope to trace 13 h...
Researchers at Michigan State University have developed a new 3-D model of a giant star's last moments, which could help explain how these stars explode. The model addresses previous limitations, including the shape of the star and the lack of fuel source, paving the way for a deeper understanding of supernova mechanisms.
Astronomers have observed a super-bright supernova associated with an ultra-long-lasting gamma-ray burst, lasting over half an hour. The supernova was 15 times brighter than usual, suggesting a massive star release of extra energy in its death process.
A study reveals that a massive star's collapse may power ultra-long gamma-ray bursts with the help of magnetars, rewriting our understanding of these cosmic events. Researchers observed a rare case where a supernova was linked to an ultra-long GRB, finding evidence of a magnetar at the source.
Scientists will observe the event from radio wavelengths to gamma rays, measuring the massive star's gravity and magnetic field. The pulsar's passage through the disk will trigger astrophysical fireworks, providing a probe for studying the system.
Recent research found that supernovas work hand-in-hand with supermassive black holes to sweep out gas, interrupting star formation in galaxies. The partnership of these celestial events may help understand why massive galaxies stopped forming stars billions of years ago.
Astronomers captured the early stages of three type 1a supernovae using the Kepler space telescope, revealing initial shockwaves differed from expected patterns. The findings suggest an alternative hypothesis for supernova ignition, contradicting long-held theories about these explosive events.
The discovery fills a gap between ordinary supernovae and those that produce powerful gamma-ray bursts. Supernova 2012ap has characteristics expected of a gamma-ray burst, yet no such burst occurred.
Researchers found two ancient stars in Sculptor dwarf galaxy with unusual chemical content, suggesting a single supernova explosion may have seeded the gas cloud. This discovery provides an unprecedented view of the earliest history of another galaxy.
Researchers made direct observations of cosmic dust resulting from an ancient supernova at the Milky Way's center, supporting the theory that supernovae produce dust in galaxies of the early universe. The study provides new insights into the origins of dust, a crucial component in star and planet formation.
An international team of astronomers has discovered a hot, dusty cloud of molecular gases in a dwarf galaxy near our own, where over 1 million young stars are forming. The star cluster is buried within a supernebula and contains massive 'O' stars that are a million times brighter than the sun.
Researchers at Johns Hopkins University have captured rare split images of a distant supernova using the Hubble Space Telescope. The images, caused by gravitational lensing, provide insight into dark matter distribution and the expansion rate of the universe.
Astronomers spotted a distant supernova split into four images due to the gravity of a massive elliptical galaxy embedded in a cluster. The unique observation will help refine dark matter estimates and study the mass of the lensing galaxy and cluster.
Astronomers have observed a distant star exploding four times due to a massive galaxy cluster, providing a rare opportunity to test Albert Einstein's General Theory of Relativity. The discovery also offers clues about the strength of gravity, dark matter, and dark energy in the universe.
A team of astronomers has discovered a distant star exploding as a supernova, with four images captured by NASA's Hubble Space Telescope. The unique alignment is due to the powerful gravity of a foreground galaxy embedded in a massive cluster, providing a rare opportunity to study dark matter.
Researchers observed a rare phenomenon where the light from a distant supernova is deflected by a massive galaxy, creating four separate images. The discovery provides insights into dark matter, which makes up about 95% of the universe's mass.
Using NASA's Hubble Space Telescope, astronomers found four separate images of the same distant supernova, enabling them to measure the difference in light paths. This discovery helps refine estimates of dark matter and the expansion rate of the universe.
Astronomers spot four images of a distant supernova in a massive galaxy cluster, bending light due to gravitational lensing. The discovery provides insights into dark matter's distribution and helps refine estimates of its amount.
Scientists analyzed ocean floor dust to determine the amount of heavy elements created by supernovae, finding much less plutonium and uranium than expected. This challenges current theories that these essential materials are created and distributed throughout space.
The All-Sky Automated Survey for Supernovae (ASAS-SN) has successfully detected 89 bright supernovae and is expanding its scope to study other local sky events. The project uses six 6-inch telescopes in Hawaii and Chile, as well as amateur telescopes worldwide, to capture hundreds of bright objects in the nearby universe.
Researchers have made significant breakthroughs in understanding galaxy evolution by modeling the effects of stellar activity on star formation. By running complex supercomputer simulations, they found that feedback from stars plays a crucial role in regulating galaxy growth.
Researchers have identified an enigmatic object named SDSS1133, which could be a recoiling black hole ejected from its parent galaxy. The discovery, made using high-precision equipment and observations with the Hubble Space Telescope, presents a unique opportunity to study gravitational waves and their detection.
Researchers have used radio telescopes in Australia and Chile to observe the remnant of Supernova 1987A, providing insights into the explosion's aftermath. The team has also developed a three-dimensional simulation that reproduces observed features, including the persistent one-sidedness in radio images.
Astronomers at Ohio State University have observed a star narrowly escaping capture by a supermassive black hole, releasing only a small portion of its mass. The event, known as a tidal disruption event (TDE), provides valuable insights into the growth and behavior of black holes in the universe.