Sentences with phrase «type of supernova in»

They planned to do so by carefully calibrating the brightness of a well - studied type of supernova in very distant galaxies.

Not exact matches

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

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.

After running a number of computationally intensive simulations of supernova light at the National Energy Research Scientific Computing Center (NERSC), a Department of Energy Office of Science User Facility located at Berkeley Lab, Goldstein and Nugent suspect that they'll be able to find about 1,000 of these strongly lensed Type Ia supernovae in data collected by the upcoming Large Synoptic Survey Telescope (LSST)-- about 20 times more than previous expectations.

It wasn't until the 1980s that scientists realized there are subgroups of supernovas, and that one of them, called Type Ia, is very consistent in its brightness.

But after running their simulations, Goldstein and Nugent found microlensing did not change the colors of strongly lensed Type Ia supernova in their early phases.

«In fact, the energy and timescale of the gamma - ray emission is a better match to some types of supernovae, or to some of the supermassive black hole accretion events that Swift has seen,» Fox said.

In 2001 one of us (Riess) announced that the space telescope had serendipitously imaged an extremely distant type Ia supernova (dubbed SN 1997ff) in repeated observationIn 2001 one of us (Riess) announced that the space telescope had serendipitously imaged an extremely distant type Ia supernova (dubbed SN 1997ff) in repeated observationin repeated observations.

• How might the burned - out stars called white dwarfs be brought to ruin by other stars in so - called Type Ia supernovae, inciting the fiery alchemy that yielded much of the iron in our blood and the potassium in our brains?

In fact, SN 2017egm was not only superluminous, but superclose: At just 420 million light - years away, it was three times closer than any other observed supernova of its type.

By measuring about 2,400 Cepheid stars in 19 galaxies and comparing the observed brightness of both types of stars, they accurately measured their true brightness and calculated distances to roughly 300 Type Ia supernovae in far - flung galaxies.

Gas and dust in space can have an impact on the brightness of standard candles — objects with known brightness such as type 1a supernovas and some variable stars

DAZZLING in its brightness, a rare type of star's first outburst in 2009 was soon dismissed as the tantrum of a supernova impostor.

The Hubble Space Telescope's recent discovery of the earliest known Type Ia supernova from more than 10 billion years ago, plus other results, favor a scenario in which two white dwarfs merge.

FLASH OF LIGHT Type 1a supernovas, such as the one seen in this Hubble Space Telescope image, can be triggered in at least two different ways, new research shows.

Observations of type 1a supernovas imply a faster expansion rate (known as the Hubble constant) than studies of the cosmic microwave background — light that originated early in cosmic history (SN: 8/6/2016, p. 10).

In August of 2011, researchers discovered SN 2011fe, a type 1a supernova 21 million light - years away in galaxy M101 (images show the galaxy before and after the supernova, with the supernova circled at rightIn August of 2011, researchers discovered SN 2011fe, a type 1a supernova 21 million light - years away in galaxy M101 (images show the galaxy before and after the supernova, with the supernova circled at rightin galaxy M101 (images show the galaxy before and after the supernova, with the supernova circled at right).

Such grains originated more than 4.6 billion years ago in the ashes of Type II supernovae, typified here (upper left) by a Hubble Space Telescope image of the Crab Nebula, the remnant of a supernova explosion in 1054.

New work from a team of Carnegie cosmochemists published by Science Advances reports analyses of carbon - rich dust grains extracted from meteorites that show that these grains formed in the outflows from one or more type II supernovae more than two years after the progenitor stars exploded.

For this study, the team set out to investigate the timing of supernova dust formation by measuring isotopes — versions of elements with the same number of protons but different numbers of neutrons — in rare presolar silicon carbide grains with compositions indicating that they formed in type II supernovae.

Even with all the variables in their origins, type Ia supernovas have still remained essentially the same brightness, and the basics of how they measure distance are unaltered.

Two teams, led by Saul Perlmutter of the Lawrence Berkeley Laboratory in California and Alex Filippenko of the University of California at Berkeley, observed scores of distant «Type Ia» supernovae, in which one star in a binary pair explodes.

It was type 1a supernovae that led to the identification of the mysterious stuff in the first place, garnering three cosmologists a Nobel prize earlier this year.

Last April astronomical detectives announced a break: An orbiting X-ray observatory picked up the chemical fingerprints of several elements in a burst's afterglow, identifying the object as an unusual type of supernova — the detonation of a massive, dying star.

In the 1990s, they recognized that a class of exploding stars called Type Ia supernovas might fit the bill.

In the Universe, cosmic ray particles are accelerated by galaxy clusters, supernovae, binary stars, pulsars and certain types of supermassive black holes.

To check the value of the Hubble constant that they have obtained from a single object, Schmidt and his colleagues plan to apply their technique to other type II supernovae that have occurred in distant galaxies.

The apparent brightnesses of distant type Ia supernovae then reveal the distances of their galaxies, which in turn give the Hubble constant.

In recent years, Schmidt and his colleagues have developed a technique for determining the distance of a type II supernova.

Extremely bright exploding stars, called superluminous supernovae, and long gamma ray bursts also occur in this type of galaxy, he noted, and both are hypothesized to be associated with massive, highly magnetic and rapidly rotating neutron stars called magnetars.

This makes it the nearest optical supernova in two decades and potentially the closest type Ia supernova to occur during the life of currently operating space missions.

Rob Beswick, a co-author of the research paper from the University of Manchester's Jodrell Bank Centre for Astrophysics added: «The explosion of a Type Ia supernova is a rare event in the nearby Universe.

Antimatter flits into existence in a variety of ways: it is produced by black holes, supernovas, and some types of radioactive decay.

Astronomers have identified a white dwarf star in our galaxy that may be the leftover remains of a recently discovered type of supernova.

Type Iax supernovae may be caused by the partial destruction of a white dwarf star in such an explosion.

Based on measurements of the expansion using Type Ia supernovae, measurements of temperature fluctuations in the cosmic microwave background, and measurements of the correlation function of galaxies, the universe has a calculated age of 13.7 ± 0.2 billion years.

Type Ia supernovae are caused by the complete destruction of a white dwarf star in a thermonuclear explosion.

[3] Type Ia Supernovae occur when an accreting white dwarf in a binary star system slowly gains mass from its companion until it reaches a limit that triggers the nuclear fusion of carbon.

But astronomers may have pulled off an equally challenging feat: detecting the glimmer of a supernova explosion in the fading afterglow of a titanic gamma ray burst (GRB)-- one of the biggest type of explosions in all the cosmos.

Now, a team led by Oliver Krause at the Max Planck Institute for Astronomy in Heidelberg, Germany, has spotted telltale signs of a type Ia supernova using the powerful 8.2 - metre Subaru telescope in Hawaii.

«In this type of supernova,» Smith said, «you're taking 20 times the mass of the sun and blowing it out into space.»

«We are now fully confident that one of the most popular supernova remnants detected in our galaxy was produced by an ordinary type Ia supernova that was first detected more than 400 years ago,» write Andrea Pastorello of Queen's University Belfast and Ferdinando Patat of the European Southern Observatory in Germany in a commentary on the study.

These were not included in either Li's or Smartt's study, both of which focused on type II - P supernovae, the most common type of core - collapse supernova.

Theorists have gradually ratcheted up the sophistication of their models and have recently succeeded at last in reproducing the two main types of supernovae.

Dr Seitenzahl said the discovery of cobalt - 57 fingerprints in a Type Ia supernova gave insights into the star that exploded and suggested it was at the top of its weight range.

«I was skeptical whether clues for the presence of cobalt - 57 in Type Ia supernovae would be observed in my lifetime,» Seitenzahl said.

Observations of the explosions of white dwarf stars in binary systems, so - called Type Ia supernovae, in the 1990s then led scientists to the conclusion that a third component, dark energy, made up 68 % of the cosmos, and is responsible for driving an acceleration in the expansion of the universe.

The supernova in question is SN 2017cbv, a thermonuclear Type Ia, which astronomers use to measure the acceleration of the expansion of the universe.

The team of astronomers who discovered it — led by Robert Quimby of the California Institute of Technology (Caltech) in Pasadena — tentatively have labeled the 4.7 billion light - years away ex-star a Type II - L supernova because of its brightness and because its light spectrum shows a primarily hydrogen content.

Type Ia supernovae are explosions that can be seen even in far - away galaxies and help astronomers study the large - scale structure of the Universe.