Researchers found a superfluid in the neutron star's core that could defy gravity and a superconductor that can sustain electricity forever. This discovery provides insight into the life cycles of stars and behavior at high densities.
Researchers confirm existence of spherical magnesium-32 nucleus, contrary to predicted shell structure. The finding has implications for understanding element synthesis in stellar explosions and requires further experiments to refine predictions.
A new study led by Ryan Foley has found a way to correct for small variations in the appearance of Type Ia supernovae, making them better standard candles. This discovery allows cosmologists to improve their data analysis and make more accurate measurements of dark energy.
The discovery of gamma-ray flares in the Crab Nebula, powered by a rapidly spinning neutron star, challenges current theories on cosmic particle acceleration. The flares were caused by super-charged electrons of up to 10 peta-electron volts, 1,000 times more energetic than any man-made accelerator.
Astrophysicists can now obtain accurate answers to the mystery of accelerating universe expansion thanks to a calibrated Pan-STARRS telescope. The telescope's performance was fine-tuned at many individual wavelengths, allowing for consistent information about supernovae.
Physicists at the University of Toronto and Rutgers University have successfully recreated a supernova explosion in a laboratory setting. The experiment, led by Michael Rogers, involved triggering a chemical reaction that generated a miniaturized version of the explosive process seen in stars.
Researchers present a comprehensive model of Type Ia supernovae (SNe Ia) progenitors using the Single Degenerate (SD) framework. The study confirms that the model describes potential progenitor systems of SNe Ia, including cases like Case Wind and Case Calm.
A team of astronomers used the Moon to search for ultra-high-energy neutrinos from distant regions of space. They reported their findings in the December edition of the journal Astroparticle Physics, setting a new upper limit on the amount of such particles arriving from space.
Researchers found compelling evidence for the birth of a stellar mass black hole in the type IIL supernova SN 1979C. The study proposes that the late time glow of the supernova is consistent with a black hole accreting material from either a fallback disk or a binary companion.
Researchers detected a massive star's supernova in 2007, which appeared as a hot dust cloud instead of the typical explosion. The astronomers suspect this was more common early in the universe and may be related to the brightest star system in our galaxy.
Astronomers measure velocity and composition of 'star guts' from nearby supernova Supernova 1987A using Hubble Space Telescope observations. The study reveals the deposition of energy and heavy elements into the host galaxy, including elements necessary for life on Earth.
Astronomers detected X-ray eclipses from a fast pulsar, shedding light on compressed matter and testing relativity. The system's unique properties revealed the size and mass of the companion star with unprecedented accuracy.
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.
Researchers at Rutgers University studied the doubly magic isotope of tin with 50 protons and 82 neutrons, providing insights into its stability and potential formation in supernova explosions. The study's findings may also contribute to developing next-generation nuclear reactors and forensic analysis techniques.
Researchers at IceCube observatory discover unusual pattern in cosmic ray data, shedding new light on interstellar magnetic fields and possible sources of high-energy cosmic rays. The finding provides a significant boost to physics and astronomy studies, ruling out some proposed theories about the source of Northern Hemisphere anisotropy.
Scientists investigate white dwarf remnants and binary systems to understand supernovae origins. However, the search for accreting white dwarfs yields few results, leading researchers to reconsider their theories.
Hydrogen gas clouds found near Galactic bar exhibit distinct properties, indicating they originated from supernova explosions and young star winds. This discovery sheds light on critical process of material movement between Galaxy's disk and halo.
Astronomers have identified a possible new class of supernovae that produces high levels of calcium, which could explain the element's abundance in galaxies and life on Earth. The 'calcium-rich' supernovae were discovered by detecting unusual elements in their spectra.
Researchers identify third type of supernova with unique chemical composition, suggesting a pair of white dwarves are involved. This discovery may explain the prevalence of certain elements in the universe and account for observed concentrations of particles called positrons.
The discovery of SN2005E reveals a supernova whose origin cannot be explained by any previously known mechanism. It is rich in helium and surprisingly different from typical white dwarf systems.
An international team of astrophysicists has created the most complete atlas of nuclear rings, which are enormous star-forming ring-shaped regions that circle certain galactic nuclei. The catalogue includes 113 such rings in 107 galaxies and provides insights into their properties and relationships with galaxy structure.
Swift has detected over 6,000 GRBs, with a 75% share of recorded bursts, offering insights into massive star deaths and the universe's structure. The spacecraft has also monitored black holes and neutron stars for high-energy radiation and conducted long-term X-ray surveys.
Researchers at CU-Boulder's Brookhaven National Laboratory collaboration used RHIC to create a 'quark-gluon plasma' with temperatures hotter than supernova explosions, recreating Big Bang conditions. The team aims to study the universe's first microseconds after the Big Bang.
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.
Scientists have found a supernova explosion that exhibits characteristics of a gamma-ray burst but lacks gamma rays. The discovery using the National Science Foundation's Very Large Array radio telescope promises to aid in locating more examples of these mysterious events.
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.
Astronomers discovered a distant star that exploded 7 billion years ago when its center became unstable and created matter and anti-matter particle pairs. The Y-155 supernova was 100 billion times brighter than the sun, releasing an enormous amount of energy.
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.
Washington University physicists are tracking down the source of cosmic rays using imaging atmospheric Cherenkov telescopes. The correlation between high cosmic-ray density and supernova rate in a starburst galaxy provides powerful evidence for supernova acceleration, long suspected to be the origin of these particles.
Researchers discover supernova that fits predictions for a star hundreds of times the sun's mass, revealing new insights into star formation and heavy metal creation. The study also suggests hyper-giant stars may exist beyond 150 suns, challenging our understanding of celestial physics.
Scientists identified a rare type of star that likely exploded into the observed superbright supernova, SN 2007bi. The discovery reveals details about the extreme heat and pressure conditions in the star's core.
Researchers have found two Earth-sized bodies with oxygen-rich atmospheres, which are not planets but rather unusual white dwarf stars. The discovery was made using data from the Sloan Digital Sky Survey and suggests that these stars may have descended from massive progenitor stars.
A new class of supernova was discovered, predicted by UC Santa Barbara scientists Lars Bildsten and colleagues. The event is fainter than typical supernovae and rises and falls in brightness over a few weeks.
Astronomers have discovered a possible new type of supernova that occurs when helium flows onto a white dwarf, causing a thermonuclear explosion. The object, dubbed SN 2002bj, is characterized by its rapid rise and fall and strong helium signature.
Scientists confirm ultra-thin coating of carbon on neutron star using Chandra's X-ray spectrum and theoretical models. The discovery resolves a ten-year mystery surrounding the object, explaining its lack of pulsations.
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.
Researchers have detected gamma rays of a trillion electron volts coming from the M 82 galaxy, providing evidence for a strong connection between galaxies with high star formation and the production of cosmic rays. The discovery uses the VERITAS array of four telescopes at the Fred Lawrence Whipple Observatory in Arizona.
BOSS is the largest survey in SDSS-III, measuring 1.4 million galaxies and 160,000 quasars to trace the details of the Universe's expansion history. The observation program will take five years and provide rich insights into cosmic structure and the contents of the Universe.
Researchers have detected a surge in galactic cosmic rays, reaching a Space Age high, attributed to the solar minimum. The increase poses a risk for astronauts and satellite systems, requiring re-evaluation of radiation shielding.
A team of researchers has created the first full-star simulation of a white dwarf star's final hours leading up to a Type Ia supernova explosion. The simulations, run on supercomputers, provide detailed insights into the process and may be critical in understanding how these massive stellar explosions occur.
Astronomers have discovered the first close-up of a white dwarf star orbiting a companion star, set to explode into a supernova in a few million years. The white dwarf is unusual, with twice its expected mass and a diameter half that of Earth.
Researchers at the University of Gothenburg have created a laser technique that can help identify a rare isotope called 182Hf, which would prove that a supernova once exploded near our solar system. The technique uses negative ions and laser light to detach an extra electron from some elements while leaving others intact.
Scientists from the University of Gothenburg found that a mysterious flux of electrons and positrons originates from supernova remnants, not dark matter. The study shows that a star 15 times more massive than the sun exploded in the Milky Way, creating a shock-wave that accelerated particles.
The Joint Dark Energy Mission aims to determine the nature of dark energy using three techniques: supernovae, weak gravitational lensing, and baryon acoustic oscillation. A new satellite design could revolutionize these methods, enabling precise measurements of expansion history.
The Gravity and Extreme Magnetism Small Explorer (GEMS) mission, led by NASA's Goddard Space Flight Center, will measure cosmic X-ray polarization. It aims to detect dozens of sources and provide insights into extreme environments, such as black holes and supernova remnants.
A new study published in the International Journal of Astrobiology claims that comets contained vast oceans of liquid water during their formation, providing ideal conditions for primitive bacteria to grow and multiply. The study's findings support the theory of cometary panspermia, which suggests that life was introduced to Earth by c...
Researchers at Monash University discovered that early meteorites' radioactive nuclei could have originated from a nearby giant star. The presence of these nuclei affects the evolution of planetary systems and the origin of Earth's water.
A team of astronomers has developed a new technique to discover supernovae at greater distances than previously known. This discovery allows for the examination of galaxies that form following supernova explosions, providing valuable information about their evolution.
Astronomers have discovered two giant supernovae 11 billion years ago, providing unprecedented insights into the early universe. The discovery was made using a new technique that allows for the detection of distant dying stars.
A new class of pulsars detected by NASA's Fermi Gamma-ray Space Telescope reveals the existence of a large population of radio-quiet gamma-ray pulsars. The study identifies 16 pulsars using computational techniques developed to analyze data from the Fermi Large Area Telescope.
Astronomers have discovered a rare type of stellar explosion known as SN 2008ha, which is 1000 times more powerful than a nova but 1000 times less powerful than a typical supernova. The explosion was detected by a 14-year-old student from New York and shed new light on the nature of stellar explosions.
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.
Astronomers from Queen's University Belfast have proposed a new physical interpretation of the 2008 supernova SN2008ha, suggesting it could be from a massive star. The team, led by Dr. Stefano Valenti, found a weak explosion with unusual properties that differ from those associated with white dwarf stars.
Astronomers at the University of Warwick have discovered that the 2006 stellar explosion SCP 06F6 bears remarkable resemblance to extremely carbon-rich stars. The object's unusual characteristics suggest it may be a new type of supernova, with properties distinct from normal Type II supernovae.
A rare radio supernova has been detected in the nearby galaxy M82, providing valuable opportunities for studying star formation and supernovas. The discovery was made using the Allen Telescope Array, which will also search for intelligent life signals around other stars.
A new method has been found to accurately determine the intrinsic brightness of Type Ia supernovae, enabling better cosmic distance measurements. This breakthrough uses a spectroscopic ratio and eliminates uncertainty caused by intervening dust or host galaxy type.
The new value of the Hubble constant is 74.2 kilometers per second per megaparsec, derived from observations of Cepheid variables in seven galaxies using the Hubble Space Telescope. This refined measurement provides a more precise understanding of dark energy's nature and its role in accelerating the universe's expansion.
New research by Princeton University geoscientist Gerta Keller suggests that volcanoes, not an asteroid, were the likely culprits in the demise of the Earth's giant reptiles. The study found 'biotic evidence' and 'aftermath' sediments indicating a massive die-off occurred much later than previously thought.
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.
Researchers have proven that supernovae are caused by the explosion of two dying red supergiant stars, providing a breakthrough in understanding massive star death and the formation of chemical elements. This discovery sheds light on the origin of the universe's heaviest elements.