Sentences with phrase «in a supernova explosion»

«Amateur astronomer captures rare first light from massive exploding star: First observation of optical light from shock breakout in a supernova explosion.»

Pulsars are a type of neutron star that are born in supernova explosions when massive stars collapse.

This calcium and other heavy elements could have been created in supernova explosions, and then incorporated into new stars, but the clusters as they are today are too small to keep hold of the material violently thrown out by supernovae.

«If you have young magnetars that have just been born in supernova explosions, only a few decades old, they could be very bursty objects, have very violent youths, and that could give rise to repeating fast radio bursts,» says astronomer Brian Metzger of Columbia University, who was not involved in the new study.

Then, researchers led by Alexander Kusenko at the University of California in Los Angeles, US, calculated that sterile neutrinos produced in supernova explosions could «kick» the neutron stars created in the supernovae to speeds of 1000 kilometres per second — a phenomenon that had previously been unexplained.

Although most researchers agree that the high velocities of pulsars must be related to their origin in supernova explosions, the exact cause of the pulsar's «punch» has remained a mystery.

Neutrinos are elementary particles produced in the nuclear furnaces inside stars and in supernova explosions.

They are abundantly produced in supernova explosions, star - powering nuclear fusion and other nuclear processes, resulting in trillions of neutrinos passing through us every minute.

The chemical elements in these grains are forged inside stars and are scattered across the cosmos when the stars die, most spectacularly in supernova explosions, the final fate of short - lived, massive stars.

In the supernova explosions that precede the formation of black holes, some of the mass of the star is blown off, carrying away part of the total angular momentum of the star.

The Crab pulsar, created in a supernova explosion that occurred in 1054 A.D., is located at a distance of about 6500 light years at the center of a magnetized nebula visible in the Taurus constellation.

The source, called SDSS1133, may be the remnant of a massive star that underwent a record period of eruptions before destroying itself in a supernova explosion.

Shocks in supernova explosions are thought to be the main source of cosmic rays — very high energy charged particles from space.

The stronger moving magnetic fields produced in supernova explosions could provide the energy for most other cosmic rays.

My research is focused on understanding the origin of «stardust» produced in the envelopes of low - mass stars or in supernova explosions, and preserved in carbonaceous meteorites and interplanetary dust particles.

One interesting feature of the synthesis of heavy elements by neutron capture at a high rate in a supernova explosion is that nuclei much heavier than lead or even uranium can be fashioned.

Scientists have attributed the patterns observed in supernova explosions and ejecta from shock - induced metal melt to RM instability.

For many years, astronomers have known two types - «supermassive» black holes at the centers of large galaxies and the so - called «stellar - mass» black holes that result when a star about 10 times the Sun's mass ends its life in a supernova explosion.

The amount of oxygen in a galaxy is determined primarily by three factors: how much oxygen comes from large stars that end their lives violently in supernova explosions — a ubiquitous phenomenon in the early Universe, when the rate of stellar births was dramatically higher than the rate in the Universe today; how much of that oxygen gets ejected from the galaxy by so - called «super winds,» which propel oxygen and other interstellar gases out of galaxies at hundreds of thousands of miles per hour; and how much pristine gas enters the galaxy from the intergalactic medium, which doesn't contain much oxygen.

In the supernova explosions of massive stars and in neutron star collisions, tremendous numbers of freely moving neutrons bind with iron atoms.

The belief that these isotopes formed in a supernova explosion millions of light - years away and billions of years before the earth formed and somehow collected in small ore bodies in a fixed ratio is absurd.

They can be forged when star at least five times the mass of our Sun dies a spectacular death in a supernova explosion.

These animations illustrate the physical process which the theory about the cosmic connection to Earth's climate proposes: 1) A giant star explodes in a supernova explosion and emits cosmic rays, 2) cosmic rays enter Earth's atmosphere, 3) rays release free electrons which act a catalysts for the building blocks for cloud condensation nuclei, 4) on which water vapour condenses into clouds.

Not exact matches

well one hypothesis is that there is a massive black hole in the center of the universe that all the universe revolves around... once it sucks the whole or most of the universe into it... it can no longer hold it all together and it explodes creating a big explosion which dwarfs supernovas scattering elements and matter everywhere... and this expansion and contraction of the universe goes on for infinity with no beginning and perhaps no end.

Ripples in space time have already been observed when hyper - violent events, such as stars collapsing into black holes or supernova explosions, occur.

for declination) of the supernova in the Large Magellanic Cloud, shown before (left) and after the explosion (right).

Supernova 1987A appears to be creating a lot of this dust, suggesting that stellar explosions play a crucial role in seeding the cosmos with planet - building material.

A ring of hot spots (in images from the Hubble Space Telescope) gradually lit up as a shock wave from supernova 1987A plowed through a loop of gas that had been expelled by the star tens of thousands of years before the explosion.

«By introducing asymmetry into the explosion and adjusting the gas properties of the surrounding environment, we were able to reproduce a number of observed features from the real supernova such as the persistent one - sidedness in the radio images,» said Dr Toby Potter.

«If this star's companion truly is a neutron star, that would mean that the neutron star was once a giant, massive star that underwent its own supernova explosion in the past,» said Binder.

Another explanation holds that our universe is housed inside a black hole — the superdense stellar corpse left behind in the aftermath of certain supernovae explosions.

This allowed the international team to determine that the explosion was a Type IIb supernova: the explosion of a massive star that had previously lost most of its hydrogen envelope, a species of exploding star first observationally identified by Filippenko in 1987.

Because all elements in the universe heavier than hydrogen, helium, and lithium have been forged by nuclear fusion in the cores of stars and then scattered into space by supernova explosions, the find indicates that the galaxy, at the age we're now observing it, was old enough for at least one generation of stars to have formed, lived, and died.

New research from the Niels Bohr Institute at the University of Copenhagen and Aarhus University shows that not only can grains of dust form in gigantic supernova explosions, they can also survive the subsequent shockwaves they are exposed to.

«The problem has been that even though dust grains composed of heavy elements would form in supernovae, the supernova explosion is so violent that the grains of dust may not survive.

Such counterparts are dependably seen in the wake of comparably energetic cosmic explosions, including both stellar - scale cataclysms — supernovae, magnetar flares, and gamma - ray bursts — and episodic or continuous accretion activity of the supermassive black holes that commonly lurk in the centers of galaxies.

As it floats in an area of the LMC racked by the explosions of numerous supernovae in recent cosmic history, one theory was that the pattern might be caused by a set of localised ripples created when clumps of debris from an ancient supernova were hit by a blast wave from a relatively recent one.

«In the early 2000s DOE funded two SciDAC projects to study supernova explosions, we basically took the output of those models and passed them through a lensing system to prove that the effects are achromatic,» says Nugent.

Metals (elements heavier than hydrogen and helium) are created in the interiors of stars as they evolve and then released into surrounding gas through supernova explosions or stellar winds (often referred to as chemical evolution).

Massive stars end their lives in gigantic explosions, so - called supernovae.

«We have predicted both effects some years ago by our three - dimensional (3D) simulations of neutrino - driven supernova explosions,» says Annop Wongwathanarat, researcher at the RIKEN Astrophysical Big Bang Laboratory and lead author of the corresponding publication of 2013, at which time he worked at MPA in collaboration with his co-authors H. - Thomas Janka and Ewald Müller.

More common lower - energy cosmic rays — thought to emerge in the aftermath of supernova explosions in the Milky Way — curve so much in the galaxy's magnetic field that they appear to come from all over the sky.

It was created by one of the most violent events that can happen in the Universe — a supernova explosion.

Pulsars form when stars at least 1.4 times larger than our sun blow up in supernovas; these powerful explosions usually knock nearby stars out

Nuclear fusion of heavy elements (absorbing energy) occurs in the extremely high - energy conditions of supernova explosions.

When the bubbling of the gas becomes sufficiently powerful, the supernova explosion sets in as if the lid of the pot were blown off.

Since the radioactive atomic nuclei are synthesized in the innermost regions of the supernova, in the very close vicinity of the neutron star, their spatial distribution reflects explosion asymmetries most directly.

CRAB NEBULA This tortured cloud is the remnant of a supernova explosion that was brilliantly visible in 1054.

Such a tireless supernova could be the first example of a proposed explosion that involves burning antimatter in a stellar core — or it could be something new altogether.

Two neighboring stars may have obliterated themselves in a pair of explosions called supernovas, producing two black holes.