Articles tagged with Supernova Remnants
The High Energy Stereoscopic System (H.E.S.S.) has detected three powerful gamma-ray sources in the Large Magellanic Cloud, including a pulsar wind nebula and a supernova remnant. These discoveries provide new insights into the formation of cosmic structures and the evolution of galaxies.
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 used the VLT to observe SN2010jl nine times soon after its explosion and found that dust grains form rapidly in the dense material surrounding the star. The observations revealed surprisingly large grain sizes that are resistant to destruction, answering a long-standing question about cosmic dust formation.
The NuSTAR mission has produced the first map of high-energy X-ray emissions from a supernova remnant, revealing details about the core explosion and its effects on the surrounding gas and dust. The observations provide new insights into the fundamental physics of nuclear explosions and their role in creating life's essential elements.
A team of astrophysicists has created the first-ever map of radioactive material in a supernova remnant using NuSTAR. The findings suggest that massive dying stars likely rip apart with distorted shock waves, ending their lives.
Astronomers are studying the newly formed stars in M83 using citizen science project STAR DATE: M83. The project aims to estimate ages for approximately 3000 star clusters. Citizen scientists analyze the image to identify objects such as supernova remnants and foreground stars, shedding light on stellar birth and death.
Astronomers have captured the remains of a recent supernova brimming with freshly formed dust, which could explain how many galaxies acquired their dusty appearance. The ALMA telescope's unprecedented resolution and sensitivity revealed a large dust mass concentrated in the central part of the ejecta.
The NASA/ESA Hubble Space Telescope has observed the remains of a star that exploded as a supernova around 600 years ago. The wispy gas structure, known as SNR B0519-69.0, is located in the Large Magellanic Cloud and features a striking blood-red color.
Astronomers have discovered a young supernova remnant, G306.3.9, located in the central regions of the Milky Way galaxy, estimated to be around 2,500 years old. The Swift and Chandra X-ray satellites detected the object, which is one of the 20 youngest known remnants identified.
A new study offers conclusive evidence that cosmic ray protons within our galaxy are accelerated in the shock waves produced by supernovae. Researchers detected the spectral cutoff in the gamma ray spectrum due to the decay of neutral pions, connecting gamma rays to accelerated protons.
Scientists have found conclusive proof that supernova remnants accelerate cosmic rays to incredible speeds. The discovery was made using four years of data from NASA's Fermi Gamma-ray Space Telescope and provides a key finding in the search for the sources of high-energy cosmic rays.
A new study confirms that cosmic rays are born in the violent aftermath of supernovas, exploding stars throughout the galaxy. Protons make up 90% of these particles, which are accelerated by shock waves and then decay into gamma-ray photons with distinctive signatures.
Researchers are using a new approach to simulate supernovas and their remnants, shedding light on the physics of these events. The team hopes its models will help reveal details about the characteristics of supernova remnants, including those created during the explosion and those formed in interaction with surrounding medium.
Researchers using Chandra X-ray Observatory and XMM-Newton have found a point-like object, IGR J11014, which may be a rapidly spinning, super-dense star ejected during a supernova explosion. If confirmed, its speed of millions of miles per hour poses a challenge to existing models for supernova explosions.
A pattern of X-ray 'stripes' in the Tycho supernova remnant supports a theory on how magnetic fields amplify near expanding shock waves, accelerating particles to extreme energies. The discovery may provide direct evidence for the production of cosmic rays.
Astronomers have detected gamma rays from a nova, dispelling the idea that these explosions are not powerful enough to produce high-energy radiation. The newly detected explosion is equivalent to about 1,000 times the energy of the sun.
Astronomers detected gamma rays from a nova using NASA's Fermi Gamma-ray Space Telescope, surprising scientists with evidence of high-energy radiation. The discovery sheds new light on the power of nova explosions and their potential to emit gamma rays.
A new model proposes that the cosmic ray knee is caused by interactions between nuclei and photons at acceleration sources, explaining both the knee and recent electron/positron excesses. The model suggests a sharp break in the CR spectra at the knee energy due to rapid energy loss.
New images from NASA's Fermi Gamma-ray Space Telescope reveal the sources of cosmic rays, which consist mainly of protons moving at nearly the speed of light. The telescope mapped billion-electron-volt gamma-rays from middle-aged and young supernova remnants, providing insights into the origins of these energetic particles.
Researchers have found remnants of high-temperature fireballs in two supernova remnants, revealing a new type of supernova remnant that was heated immediately after the explosion. The discovery was made possible by the sensitivity of the Suzaku satellite.
A new study of supernova remnants shows that their symmetry reveals how a star exploded, allowing astronomers to classify supernovas more accurately. The analysis found circular remnants from Type Ia explosions and asymmetric remnants from core-collapse supernovas.
Astronomers have identified the youngest neutron star ever discovered, located 11,000 light years from Earth. The star was born in a violent supernova explosion 330 years ago and features a unique carbon atmosphere just 10 centimeters thick.
Astronomers study SNR 0104, a Type Ia supernova remnant in the Small Magellanic Cloud, showing an unusual structure. The object's two bright lobes of emission suggest strong asymmetry in its formation.
Researchers at NC State University used a mathematical model to get a clearer picture of the galaxy's youngest supernova remnant. The data provides evidence that the remnant is from a type Ia supernova, raising questions about the generation of cosmic ray particles and magnetic field effects.
The team's three-dimensional visualization provides clues about how supernovas form new stars and solar systems. The research also helped identify the chemical elements emerging from the exploded star, shedding light on the process of star formation.
A team of scientists has created a movie tracking the expansion and changes of Cassiopeia A over time, revealing slower-than-expected energy loss. The visualization also shows high-velocity plumes from the explosion, challenging current theoretical models.
Astronomers have tracked a recent supernova explosion in the Milky Way galaxy using NASA's Chandra X-ray Observatory and NRAO's VLA. The discovery confirms the supernova is about 140 years old, making it the youngest recorded in the galaxy.
Dr. Stephen Reynolds and his team discovered the youngest known supernova remnant G1.9+0.3, estimated to be around 100-140 years old, using Chandra X-Ray Observatory images from 2007 and 1985. The discovery suggests that a supernova explosion occurred relatively recently, providing insights into the life cycle of galaxies.
Two distinct gas and dust clouds formed by different types of supernova explosions are detected in DEM L316 nebula, with one shell containing more iron suggesting a Type Ia supernova. The two shells appear to be aligned by chance in the sky due to their vastly different ages.
Astronomers study G292.0+1.8 supernova remnant to understand complex star death and dispersal of elements like oxygen into next generation of stars and planets. The new Chandra image shows an intricately structured debris field with varying temperatures, indicating lopsided explosion.
Recent observations from NASA and Japanese X-ray observatories have helped clarify the origin of cosmic rays. The study, published in Nature, suggests that magnetic fields in supernova remnants are stronger than previously thought, enabling them to accelerate charged particles to enormous energies.
Astronomers have identified Calvera, a bright X-ray source in Ursa Minor, as a promising candidate for an isolated neutron star, potentially the closest known. The team used NASA's Swift satellite and other telescopes to pinpoint its position and confirm its characteristics.
Researchers at the University of Illinois at Urbana-Champaign have observed a superbubble forming in the Small Magellanic Cloud, a galactic neighbor of the Milky Way. The study reveals that multiple massive stars are blowing bubbles and overlapping supernova remnants, which may eventually merge into one enormous cavity.
A team of astronomers has solved the long-standing mystery of Kepler's supernova remnant using Chandra's latest image, revealing it as a Type Ia supernova. The discovery sheds light on how stars can end catastrophically and expands our understanding of the universe.
Researchers discovered that supernova remnants in the Small Magellanic Cloud contain up to one-hundredth the amount of dust predicted by current theories. This finding suggests alternative sites of dust formation, such as massive star winds, may be more important contributors to primordial galaxies. The study provides a unique test of ...
Using the Spitzer Space Telescope, Hubble Space Telescope, and Chandra X-ray Observatory, researchers observed the Kepler's supernova remnant, uncovering a bubble-shaped shroud of gas and dust expanding at 4 million miles per hour. The observations revealed distinct features, including heated interstellar dust and regions of hot gas.
Astronomers from Johns Hopkins University confirm the Cygnus Loop is closer to Earth than previously thought, with a distance of 1,860 light years. The new findings were obtained using the Far Ultraviolet Spectroscopic Explorer (FUSE) satellite and provide an accurate starting point for understanding this important supernova remnant.
Researchers observed supernova remnants in two neighboring galaxies, providing new insight into gas shocked by blast waves and material structure between stars. The findings expand our understanding of a star's long-term evolution and how elements are redistributed into interstellar space.
Electrons accelerated by supernova shock waves can achieve speeds approaching light speed, according to a new study. The research uses computer simulations to investigate the behavior of electrons in magnetic fields and oscillating electric fields, suggesting a novel method for producing high-energy charged particles.
Researchers using NASA's Chandra X-ray Observatory have discovered a probable pulsar at the center of a 1,600-year-old supernova. The finding provides evidence for an associated pulsar and allows for detailed study of the supernova remnant. This discovery helps connect pulsars with massive stars from which they formed.
Scientists using Chandra X-ray Observatory discovered a supernova remnant in the center of our galaxy, which may help regulate a nearby supermassive black hole. The remnant is believed to be responsible for intense feeding of material into the black hole, followed by a period of starvation.
Scientists confirm pulsar formed in 386 AD supernova, a historic event witnessed by Chinese astronomers. The discovery, using NASA's Chandra X-ray Observatory, provides strong evidence for the pulsar's age and sheds new light on the behavior of young neutron stars.
Researchers using Chandra X-ray Observatory associate a pulsar with a historic supernova, dated back to 386 AD, providing strong evidence for the young age of the pulsar. The discovery challenges conventional wisdom on pulsars and their formation.
Researchers found evidence that supernovae explosions can leave behind iron-rich gas clouds that feed gamma-ray bursts. The 'supranova' model suggests that the gamma-ray burst arises from the delayed collapse of a neutron star formed by the supernova explosion.
Dr. Oliver Manuel proposes that the sun and planets formed from debris of a massive supernova explosion, contradicting conventional astrophysics theories. Recent data from NASA's Galileo probe supports his claims by detecting traces of strange xenon gases in Jupiter's atmosphere.
Researchers using the VLA radio telescope found a pulsar that is at least 40,000 years old and may be as old as 170,000 years. This discovery challenges current understanding of neutron stars and their ages.
Researchers propose two theories to explain the origin of neutron star kicks: the 'mass rocket,' which suggests a mass ejection asymmetry, and the 'neutrino rocket,' which relies on the intense magnetic field surrounding the newly formed neutron star. These theories aim to explain the observed high speeds of pulsars and the asymmetrica...
The Chandra X-ray Observatory has imaged the full impact of Supernova 1987A for the first time, revealing a shock wave smashing into the outer parts of a ring at 4,500 km/s. The gas behind the shock wave has a temperature of ten million degrees Celsius.
Astronomers have discovered an expanding oxygen and neon ring in the remnants of a massive star explosion, providing unprecedented insights into the creation and dispersal of heavy elements. The findings suggest that these elements are necessary for life on Earth and could provide clues to the nature of supernovae.
A team of astronomers has used Chandra to map the distribution of silicon, sulfur, and iron in Cassiopeia A, a supernova remnant. The findings provide insights into how elements are produced in stars and their subsequent release into space.
Astronomers have detected the first observational evidence for hypernova remnants in galaxy M101. The two remnants, MF83 and NGC5471B, are among the largest known supernova remnants and have X-ray luminosities about an order of magnitude brighter than brightest supernovae.
A team of astronomers has found convincing evidence for a key tenet of the three-phase model of the interstellar medium. The study of a supernova remnant in the Large Magellanic Cloud reveals the features of evaporating gas and shocked cloudlets, supporting the theory.
Researchers found a direct correlation between the pattern of X-ray emission and the size of supernova remnants. Larger remnants exhibit brighter X-ray emission from their centers, suggesting changes in gas distribution as they age.
Researchers have produced a new radio image revealing a supernova remnant and numerous pulsar candidates, showcasing the Milky Way's central region in unprecedented detail. The technique will be useful for astronomers to study the galaxy's major components.
Astronomers have discovered a large number of slow X-ray pulsars in supernova remnants, which are believed to be neutron stars with huge magnetic fields. These so-called magnetars rotate much slower than expected and are invisible to radio probes.
A team of scientists has discovered a young and previously unknown supernova remnant located just 700 light years away from the Vela supernova remnant. The remnant is exceptionally close to Earth, with an age of at most 1500 years, making it the nearest supernova remnant to have occurred during recent human history.
Researchers found 'anomalous X-ray pulsars' in supernovae remnants, which spin slower and have stronger magnetic fields than radio pulsars. This discovery reverses the understanding of how pulsars behave after a star explodes as a supernova.
Researchers Dr. Jan van Paradijs and his team are using the Advanced X-ray Astrophysics Facility (AXAF) to study two Anomalous X-ray Pulsars (AXPs) - magnetar candidates - that differ from the bulk of X-ray pulsars due to their red X-ray colors and short pulse periods, indicating strong magnetic fields aging the pulsars faster.
Astronomers detected a series of at least 26 starquakes, leading to the discovery of SGR 1627-41, the fourth conclusively identified SGR. The new SGR is believed to be caused by massive starquakes and has been linked to a supernova remnant.
New observations reveal DEM L 316 as two overlapping supernova remnants with colliding shells, studied to understand energy and element distribution. The collision may influence the births of new stars by distributing material from dead stars.