Current Supernovae News and Events

Current Supernovae News and Events, Supernovae News Articles.
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Placing cosmological constraints on quantum gravity phenomenology
Through new research published in EPJ C, researchers have used well-established cosmological observations to place tighter constraints on the quadratic model of the Generalized Uncertainty Principle, while discrediting the linear model. (2021-02-10)

Spectacular 'honeycomb heart' revealed in iconic stellar explosion
A unique 'heart-shape', with wisps of gas filaments showing an intricate honeycomb-like arrangement, has been discovered at the centre of the iconic supernova remnant, the Crab Nebula. Astronomers have mapped the void in unprecedented detail, creating a realistic three-dimensional reconstruction. The new work is published in Monthly Notices of the Royal Astronomical Society. (2021-02-10)

Rare blast's remains discovered in Milky Way's center
Astronomers may have found our Galaxy's first example of an unusual kind of stellar explosion. This discovery, made with NASA's Chandra X-ray Observatory, adds to the understanding of how some stars shatter and seed the universe with elements critical for life on Earth. (2021-02-08)

Limits of atomic nuclei predicted
Novel calculations have enabled the study of nearly 700 isotopes between helium and iron, showing which nuclei can exist and which cannot. In an article published in Physical Review Letters, scientists from TU Darmstadt, the University of Washington, the Canadian laboratory TRIUMF, and the University of Mainz report how they simulated for the first time using innovative theoretical methods a large region of the chart of nuclides based on the theory of the strong interaction. (2021-01-13)

Unveiling the double origin of cosmic dust in the distant Universe
Two billion years after the Big Bang, the Universe was still very young. However, thousands of huge galaxies, rich in stars and dust, were already formed. A new study explains how this was possible. Scientists identified the processes behind their evolution and found evidence for a rapid growth of dust due to a high concentration of metals in the distant Universe. The study offers a new approach to investigate the evolutionion of massive objects. (2021-01-11)

Artificial intelligence classifies supernova explosions with unprecedented accuracy
Scientists from the Center for Astrophysics | Harvard & Smithsonian have trained machine learning software to classify supernovae without the traditional use of spectra. The project--the first to use real supernovae data to inform its artificial intelligence--is 82% accurate. Currently, scientists take spectra of 10-percent of the ~10,000 supernovae discovered each year. When the Rubin Observatory goes online, only 0.1-percent of the expected supernovae discoveries will be further studied without the new software. (2020-12-17)

Multi-messenger astronomy offers new estimates of neutron star size and universe expansion
Multi-messenger astronomy allows researchers to put new constraints on the radius of a typical neutron star and provide a novel calculation of the Hubble constant. (2020-12-17)

Supernova surprise creates elemental mystery
Michigan State University (MSU) researchers have discovered that one of the most important reactions in the universe can get a huge and unexpected boost inside exploding stars known as supernovae. (2020-12-02)

Hubble observes spectacular supernova time-lapse
The NASA/ESA's Hubble Space Telescope has tracked the fading light of a supernova in the spiral galaxy NGC 2525, located 70 million light years away. Supernovae like this one can be used as cosmic tape measures, allowing astronomers to calculate the distance to their galaxies. Hubble captured these images as part of one of its major investigations, measuring the expansion rate of the Universe, which can help answer fundamental questions about our Universe's very nature. (2020-10-01)

Hubble watches exploding star fade into oblivion
When a star unleashes as much energy in a matter of days as our Sun does in several billion years, you know it's not going to remain visible for long. Like intergalactic paparazzi, NASA's Hubble Space Telescope captured the quick, fading celebrity status of a supernova, the self-detonation of a star. (2020-10-01)

Elements of surprise: neutron stars contribute little, but something's making gold, research finds
Neutron star collisions do not create the quantity of chemical elements previously assumed, a new analysis of galaxy evolution finds. The research also reveals that current models can't explain the amount of gold in the cosmos - creating an astronomical mystery. The work has produced a new-look Periodic Table, showing the stellar origins of naturally occurring elements from carbon to uranium. (2020-09-15)

FSU-led research team discovers unique supernova explosion
A 7-member international research team led by Florida State University Assistant Professor of Physics Eric Hsiao discovered a supernova that could help uncover the origins of the group of supernovae this star belongs to. (2020-09-10)

A disk of gas would explain mysterious light changes observed in Sagittarius constellation
The enigmatic variations of light in a binary system, located in Sagittarius constellation, could be explained by the presence of a variable gas disk around a hot star that revolves around a cooler star. These are the conclusions published in the journal Astronomy & Astrophysics and which brought by researchers from Chile, Serbia and Poland. (2020-09-02)

Ancient star explosions revealed in the deep sea
A mystery surrounding the space around our solar system is unfolding thanks to evidence of supernovae found in deep-sea sediments. (2020-08-24)

Discovery lays blame on supernova for extinction event nearly 360 million years ago
Between a decline in biodiversity and a series of extinction events, the Late Devonian period was not the most hospitable time on Earth. And then came one or more supernovae explosions whose resulting ionizing radiation was the final push that spelled the end for armored fish, most trilobites and other life. (2020-08-20)

Exploding stars may have caused mass extinction on Earth, study shows
Imagine reading by the light of an exploded star, brighter than a full moon. It might be fun to think about, but this scene is the prelude to a disaster when the radiation devastates life as we know it. Killer cosmic rays from nearby supernovae could be the culprit behind at least one mass extinction event, researchers said, and finding certain radioactive isotopes in Earth's rock record could confirm this scenario. (2020-08-18)

Calcium-rich supernova examined with x-rays for first time
X-ray images give unprecedented view of extremely rare type of supernova. New information suggests that these supernovae start as compact stars that lose mass at the end of life. Calcium-rich supernovae are responsible for up to half the calcium in the entire universe. SN 2019ehk has the richest calcium emission of all known transients (2020-08-05)

Calcium-rich supernova examined with X-rays for first time
New findings reveal that a calcium-rich supernova is a compact star that sheds an outer layer of gas during the final stages of its life. When the star explodes, its matter collides with the loose material in that outer shell, emitting bright X-rays. The overall explosion causes intensely hot temperatures and high pressure, driving a chemical reaction that produces calcium. (2020-08-05)

Spectacular ultraviolet flash may finally explain how white dwarfs explode
For just the second time ever, astrophysicists have spotted a spectacular flash of ultraviolet (UV) light accompanying a white dwarf explosion. An extremely rare type of supernova, the event is poised to offer insights into several long-standing mysteries, including what causes white dwarfs to explode, how dark energy accelerates the cosmos and how the universe creates heavy metals, such as iron. (2020-07-23)

New cosmic magnetic field structures discovered in galaxy NGC 4217
Spiral galaxies such as our Milky Way can have sprawling magnetic fields. There are various theories about their formation, but so far the process is not well understood. An international research team has now analysed the magnetic field of the Milky Way-like galaxy NGC 4217 in detail on the basis of radio astronomical observations and has discovered as yet unknown magnetic field structures. The data suggest that star formation and star explosions, so-called supernovae, are responsible for the visible structures. (2020-07-21)

Thermonuclear blast sends supernova survivor star hurtling across the Milky Way
An exploding white dwarf star blasted itself out of its orbit with another star in a 'partial supernova' and is now hurtling across our galaxy, according to a new study from the University of Warwick. (2020-07-14)

White dwarfs reveal new insights into the origin of carbon in the universe
A new analysis of white dwarf stars supports their role as a key source of carbon in galaxies. Every carbon atom in the universe was created by stars, but astrophysicists still debate which types of stars are the primary source of the carbon in our galaxy. Some studies favor low-mass stars that blew off their envelopes in stellar winds and became white dwarfs, while others favor massive stars that eventually exploded as supernovae. (2020-07-06)

New test of dark energy and expansion from cosmic structures
A new paper has shown how large structures in the distribution of galaxies in the Universe provide the most precise tests of dark energy and cosmic expansion yet. (2020-06-03)

Class of stellar explosions found to be galactic producers of lithium
A team of researchers, led by astrophysicist Sumner Starrfield of Arizona State University (ASU), has combined theory with both observations and laboratory studies and determined that a class of stellar explosions, called classical novae, are responsible for most of the lithium in our galaxy and solar system. (2020-06-01)

A single proton can make a heck of a difference
Scientists from the RIKEN Nishina Center for Accelerator-Based Science and collaborators have shown that knocking out a single proton from a fluorine nucleus -- transforming it into a neutron-rich isotope of oxygen -- can have a major effect on the state of the nucleus. (2020-05-28)

Astrophysicists capture new class of transient objects
After astronomers visually spotted a bright burst in a tiny galaxy 500 million lightyears away from Earth in 2016, a Northwestern University-led team has determined that the anomaly is the third fast blue optical transient (FBOT) ever captured in radio- and X-ray wavelengths. (2020-05-26)

Astronomers discover new class of cosmic explosions
Analysis of two cosmic explosions indicates to astronomers that the pair, along with a puzzling blast from 2018, constitute a new type of event, with similarities to some supernovae and gamma-ray bursts, but also with significant differences. (2020-05-26)

New study examines which galaxies are best for intelligent life
Giant elliptical galaxies are not as likely as disk-shaped galaxies, such as our own Milky Way, to be cradles of technological civilizations, according to a recent paper by a University of Arkansas astrophysicist. (2020-05-01)

MSU professor collaborates with international colleagues in Review of Modern Physics journal article
MSU Professor Alexandra Gade collaborated with international colleagues for a Review of Modern Physics article about shell evolution of exotic nuclei. The graphic displays the chart of nuclei, or proton vs. neutron number, and indicates the magic numbers that were shown to change for short-lived nuclei at the fringes of the chart. To understand the production of the elements in the Universe, the properties, including shell structure, of such nuclei have to be understood. (2020-04-22)

Scientists discover supernova that outshines all others
A supernova at least twice as bright and energetic, and likely much more massive than any yet recorded has been identified by an international team of astronomers, led by the University of Birmingham. (2020-04-13)

A massive star's dying breaths
Betelgeuse has been the center of significant media attention lately. The red supergiant is nearing the end of its life, and when a star over 10 times the mass of the Sun dies, it goes out in spectacular fashion. With its brightness recently dipping to the lowest point in the last hundred years, many space enthusiasts are excited that Betelgeuse may soon go supernova, exploding in a dazzling display that could be visible even in daylight. (2020-02-28)

Revealed: The explosive origin of superluminous supernova SN 2006gy
Providing answers about its curious supreme brightness, researchers say the superluminous supernova SN 2006gy -- one of the brightest stellar explosions ever studied, and discovered in 2006 -- gained its exceptional luster when a normal Type Ia explosion smashed into a surrounding shell of ejected stellar material. (2020-01-23)

New insights about the brightest explosions in the Universe
Swedish and Japanese researchers have, after ten years, found an explanation to the peculiar emission lines seen in one of the brightest supernovae ever observed -- SN 2006gy. At the same time they found an explanation for how the supernova arose. (2020-01-23)

Astronomers detect large amounts of oxygen in ancient star's atmosphere
Astronomers using W. M. Keck Observatory on Maunakea in Hawaii have detected large amounts of oxygen in the atmosphere of one of the oldest and most elementally depleted stars known -- a 'primitive star' scientists call J0815+4729. This new finding provides an important clue on how oxygen and other important elements were produced in the first generations of stars in the universe. (2020-01-23)

Stellar heavy metals can trace history of galaxies
Astronomers have cataloged signs of nine heavy metals in the infrared light from supergiant and giant stars. New observations based on this catalog will help researchers to understand how events like binary neutron star mergers have affected the chemical composition and evolution of our own Milky Way galaxy and other galaxies. (2020-01-09)

Short-lived light sources discovered in the sky
Roughly a hundred of very red, star-like sources that have appeared and vanished in short period of time have been discovered by a team of researchers when reviewing catalogue data, according to a new paper published in the Astronomical Journal. While most likely to be natural astrophysical sources the researchers are also taking extra-terrestrial sources into account. (2019-12-12)

NASA's TESS presents panorama of southern sky
The glow of the Milky Way -- our galaxy seen edgewise -- arcs across a sea of stars in a new mosaic of the southern sky produced from a year of observations by NASA's Transiting Exoplanet Survey Satellite (TESS). Constructed from 208 TESS images, the panorama reveals both the beauty of the cosmic landscape and the reach of TESS's cameras. (2019-11-05)

New study sheds light on conditions that trigger supernovae explosions
For the first time, researchers were able to demonstrate the process of detonation formation using both experiments and numerical simulations carried out on supercomputers. (2019-11-01)

Scientists may have discovered whole new class of black holes
New research shows that astronomers' search for black holes might have been missing an entire class of black holes that they didn't know existed. In a study publishing Oct. 31, 2019 in the journal Science, astronomers offer a new way to search for black holes, and show that it is possible there is a class of black holes smaller than the smallest known black holes in the universe. (2019-10-31)

How do the strongest magnets in the universe form?
How do some neutron stars become the strongest magnets in the Universe? A German-British team of astrophysicists has found a possible answer to the question of how these so-called magnetars form. Researchers from Heidelberg, Garching, and Oxford used large computer simulations to demonstrate how the merger of two stars creates strong magnetic fields. If such stars explode in supernovae, magnetars could result. (2019-10-09)

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