Sentences with phrase «radio bursts in»

2013 CASS Student Symposium — Talk title: Searching for Fast Radio Bursts in the High Time Resolution Universe Survey

A Faster Response Needed to See Fast Radio Bursts in the Universe - an article I wrote for The Conversation

The ASKAP telescope in Australia found new fast radio bursts in just three days — and it's not even fully operational yet.

An unknown object that appears close to an expanding cloud of matter from a supernova (top) spat out five strong radio bursts in 2002 (bottom).

The origin of a fast radio burst in this type of dwarf galaxy suggests a connection to other energetic events that occur in similar dwarf galaxies, said co-author and UC Berkeley astronomer Casey Law, who led development of the data - acquisition system and created the analysis software to search for rapid, one - off bursts.

Observing a fast radio burst in conjunction with neutrinos would be a coup, helping establish source objects for both types of phenomena.

Not exact matches

It was a total surprise to them; the idea of radio wave bursts had been abandoned after scientists in the»70s and»80s failed to locate such signals.

The number of wave crests arriving from Fast Radio Bursts per second — their «frequency» — is in the same range as that of radio sigRadio Bursts per second — their «frequency» — is in the same range as that of radio sigradio signals.

Penn State University astronomers have discovered that the mysterious «cosmic whistles» known as fast radio bursts can pack a serious punch, in some cases releasing a billion times more energy in gamma - rays than they do in radio waves and rivaling the stellar cataclysms known as supernovae in their explosive power.

Fast radio bursts, which astronomers refer to as FRBs, were first discovered in 2007, and in the years since radio astronomers have detected a few dozen of these events.

Was it the first step on the path to a paradigm shift in radio astronomy, similar to pulsars or gamma ray bursts?

«With abundant observational information in the future, we can gain a better understanding of the physical nature of Fast Radio Bursts,» said Peter Mészáros, Holder of the Eberly Family Chair in Astronomy and Astrophysics and Professor of Physics at Penn State, the senior author of the research paper.

Discovery of the gamma - ray «bang» from FRB 131104, the first non-radio counterpart to any FRB, was made possible by NASA's Earth - orbiting Swift satellite, which was observing the exact part of the sky where FRB 131104 occurred as the burst was detected by the Parkes Observatory radio telescope in Parkes, Australia.

The team also analyzed the radio waves in a new way, revealing that what looked like individual bursts were actually composed of many smaller sub-bursts, says astronomer Andrew Seymour of the Universities Space Research Association at Arecibo.

«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.

Hessels thinks «the prospects are quite good» for figuring out what fast radio bursts are in the near future.

This artist's impression represents the burst in different radio wavelengths: blue is a shorter wavelength, red is longer.

Astronomers are racing to figure out what causes powerful bursts of radio light in the distant cosmos

Although this neutron star's radio waves don't come in brief bright bursts, they are also twisted, the researchers say.

«Since gamma ray bursts are usually so well behaved, this really stood out,» says radio astronomer Dale Frail of the National Radio Astronomy Observatory in Soccorro, New Meradio astronomer Dale Frail of the National Radio Astronomy Observatory in Soccorro, New MeRadio Astronomy Observatory in Soccorro, New Mexico.

Most short gamma - ray bursts are visible in X-rays and radio waves right away and fade over time.

The change in the burst's brightness appears to be exactly the same at radio and optical frequencies; this can happen, say Garnavich and his collaborators Avi Loeb and Kris Stanek from the Center for Astrophysics in Cambridge, Massachusetts, only if part of the expanding ring passed behind a star located exactly between Earth and the ring itself.

«The discovery of a repeating FRB has not only narrowed down the possible astrophysical origins of FRBs,» says lead author Laura Spitler of the Max Planck Institute for Radio Astronomy in Bonn, Germany, «but we also have a better shot at unraveling their nature by being able to observe more bursts from this source.»

Meanwhile, astronomers at the Very Large Array radio telescope in New Mexico were detecting the burst's radio - wave aftermath, another first.

A repeating burst was discovered in 2012, however, providing an opportunity for a team of researchers to repeatedly monitor its area of the sky with the Karl Jansky Very Large Array in New Mexico and the Arecibo radio dish in Puerto Rico, in hopes of pinpointing its location.

Those observations, published today in Nature, reveal that the location of the bursts coincides with a faint, remote galaxy that also hosts a faint, persistent source of radio waves.

These bursts of radio waves have remained a mystery since the first one was discovered in 2007 by researchers scouring archived data from Australia's Parkes Radio Telescope in search of new pulradio waves have remained a mystery since the first one was discovered in 2007 by researchers scouring archived data from Australia's Parkes Radio Telescope in search of new pulRadio Telescope in search of new pulsars.

At the VLA, he currently uses 24 computer central processing units (CPUs) in parallel, both to record and search the data for brief radio bursts.

SNATCHING SIGNALS Most of the fast radio bursts seen to date have been recorded by the Parkes Radio Telescope in New South Wales, Austrradio bursts seen to date have been recorded by the Parkes Radio Telescope in New South Wales, AustrRadio Telescope in New South Wales, Australia.

Instead, they found a strange burst of radio noise recorded in 2001 that appeared to originate well beyond one of the satellite galaxies that orbit the Milky Way.

This detection follows 11 previously recorded outbursts of radio waves from the same location, the only known repeater in a class of enigmatic eruptions known as fast radio bursts.

The continuing barrage from this repeating source, roughly 3 billion light - years away in the constellation Auriga, implies that whatever is causing some radio bursts is not a one - time destructive

Last February a team of astronomers reported detecting an afterglow from a mysterious event called a fast radio burst, which would pinpoint the precise position of the burst's origin, a longstanding goal in studies of these mysterious events.

A team studying data from a recent sky survey has spotted a huge burst of radio waves that came and went in the blink of an eye and has not returned since.

It packed as much energy in its mere 5 - millisecond duration as the sun puts out in a month, making it by far the strongest, quickest signal radio astronomers have observed, although it wasn't nearly as powerful as the elusive gamma ray bursts that populate the universe.

Reporting online today in Science, the researchers say they think only two phenomena could be behind the radio burst they discovered: the merger of two neutron stars or the final evaporation of a black hole.

«The CHIME telescope in Penticton, British Columbia, should be an excellent instrument for detecting fast radio bursts and studying their polarization properties,» says Shriharsh Tendulkar, postdoctoral researcher at the McGill Space Institute.

But the authors also speculate that the twisting of the radio bursts could be explained if FRB 121102 is located in a powerful nebula (an interstellar cloud of gas and dust) or amid the remains of a dead star.

New detections of radio waves from a repeating fast radio burst have revealed an astonishingly potent magnetic field in the source's environment, indicating that it is situated near a massive black hole or within a nebula of unprecedented power.

«A repeating fast radio burst from an extreme environment: Extragalactic source of radio - wave flashes resides in a powerfully magnetized astrophysical region.»

The amount of twisting observed in FRB 121102's radio bursts is among the largest ever measured in a radio source, leading the researchers to conclude that the bursts are passing through an extraordinarily strong magnetic field in a dense plasma.

The observations by the Breakthrough Listen team at UC Berkeley using the Robert C. Byrd Green Bank Telescope in West Virginia show that the fast radio bursts from this object, called FRB 121102, are nearly 100 percent linearly polarized, an indication that the source of the bursts is embedded in strong magnetic fields like those around a massive black hole.

The Dutch and Breakthrough Listen teams suggest that the fast radio bursts may come from a highly magnetized rotating neutron star — a magnetar — in the vicinity of a massive black hole that is still growing as gas and dust fall into it.

Fast radio bursts are brief, bright pulses of radio emission from distant but so far unknown sources, and FRB 121102 is the only one known to repeat: more than 200 high - energy bursts have been observed coming from this source, which is located in a dwarf galaxy about 3 billion light years from Earth.

The nearly 100 percent polarization of the radio bursts is unusual, and has only been seen in radio emissions from the extreme magnetic environments around massive black holes, such as those at the centers of galaxies.

It has been instrumental in tasks as diverse as monitoring near - Earth asteroids, watching for bright blasts of energy called fast radio bursts and searching for extraterrestrial intelligence.

Another team of researchers announced in August they'd detected an additional 14 bursts, and at higher radio frequencies than ever observed before.

«The search for nearby fast radio bursts offers an opportunity for citizen scientists to help astronomers find and study one of the newest species in the galactic zoo,» says theorist Avi Loeb of the Harvard - Smithsonian Center for Astrophysics (CfA).

This article appeared in print under the headline «Cosmic radio burst tracked back to a dwarf galaxy»

That points to neutron stars — which form when short - lived massive stars in stellar nurseries die — as the source of fast radio bursts.