2013 CAASTRO Ephemeral Universe Workshop — Talk title: Searching for Fast
Radio Bursts at Intermediate Latitudes
An absence of fast
radio bursts at intermediate galactic latitudes.
A polarized fast
radio burst at low Galactic latitude.
Not exact matches
But on the morning of the second leaders» debate (on Sky News and
Radio 4
at 8 pm tonight) it would appear that Fleet Street is now moving to
burst the Clegg bubble and bring him back down to earth, not only by putting Lib Dem policy under serious scrutiny for the first time, but also by delving into Clegg's personal record:
«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.
If each of the neutron stars produces a
radio burst every few months, perhaps after absorbing interstellar gas, the close ones would be detected
at the rate observed, the team calculates.
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.
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.
Combined with the fact that
bursts seem to evolve from energetic gamma rays to X-rays to visible light, which means they cool off over time, the
radio data supported the idea that they are huge fireballs, expanding
at near - light - speed and cooling as they go.
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.
«Fast
radio bursts are exceedingly bright given their short duration and origin
at great distances, and we haven't identified a possible natural source with any confidence,» said theorist Avi Loeb of the Harvard - Smithsonian Center for Astrophysics.
Anthony Readhead of the Owens Valley
Radio Observatory
at Caltech and colleagues caught two small, hot
bursts traveling away from a bright galaxy called J1415 +1320
at near the speed of light.
An international team of astronomers led by Paulo Freire of the Jodrell Bank Observatory
at the University of Manchester, United Kingdom, detected the gas by observing 15 millisecond pulsars — compact, rapidly spinning stars that emit
bursts of
radio waves with clockwork precision.
«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.
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 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.
To read the data, the device subjects the cylinder to a less intense
burst of
radio waves
at the same frequency.
Banking that she'd spot a «live»
burst, Petroff had an international team poised to make rapid follow - up observations,
at wavelengths from
radio to X-rays.
Another team of researchers announced in August they'd detected an additional 14
bursts, and
at higher
radio frequencies than ever observed before.
«This impressive result shows the power of several telescopes working in concert — first detecting the
radio burst and then precisely locating and beginning to characterize the emitting source,» said Phil Puxley, a program director
at the National Science Foundation that funds the VLA, VLBA, Gemini and Arecibo observatories.
Astronomers
at Sweet Briar College and the Naval Research Laboratory have detected a powerful new
bursting radio source whose unique properties suggest the discovery of a new class of astronomical objects.
The successful candidate will work on the analysis and interpretation of solar flare related
radio -
bursts observed with the VLA, in collaboration with our project partner
at the New Jersey Institute of Technology, NJ, with the possibility of getting involved in STIX science and operations planning.
«Amazingly, even though the sky is known to be full of transient objects emitting
at X - and gamma - ray wavelengths,» NRL astronomer Dr. Joseph Lazio pointed out, «very little has been done to look for
radio bursts, which are often easier for astronomical objects to produce.»
Massive planets — «super Jupiters» circling stars beyond the Sun — also might reveal themselves through
bursts of
radio emission
at the frequency of this survey, the astronomers speculated.
«Fast
radio bursts are exceedingly bright given their short duration and origin
at great distances, and we haven't identified a possible natural source with any confidence,» said Harvard professor Avi Loeb.
And, according to Laura Spitler, namesake of the Spitler
burst and a researcher
at the Max Planck Institute for
Radio Astronomy, in Bonn, Germany, magnetars generally form from stellar explosions called Type - I superluminous supernovas.
In recent
radio surveys at Parkes astronomers looking for new pulsars also found a new type of pulsed object since called Fast Radio Bursts (F
radio surveys
at Parkes astronomers looking for new pulsars also found a new type of pulsed object since called Fast
Radio Bursts (F
Radio Bursts (FRBs).
The
radio telescope
at the Parkes Observatory in Australia has picked up the brightest fast
radio burst ever detected
Space is full of mysteries, and among the most intriguing
at the moment are fast
radio bursts (FRBs).
Five new fast
radio bursts from the HTRU high - latitude survey
at Parkes: first evidence of two - component
bursts.
The
radio telescope
at the Parkes Observatory in Australia has picked up the brightest fast
radio burst ever detected (Credit: < a href ="https://depositphotos.com/39535225/stock-photo-
radio-telescope-dish-in-parkes.html" rel="nofollow"> ribeiroantonio / Depositphotos )
The
radio telescope
at the Parkes Observatory in Australia has picked up the brightest fast
radio burst ever detected (Credit: ribeiroantonio / Depositphotos)
A brief but brilliant
burst of radiation that travelled
at least a billion light years through Space to reach an Australian
radio telescope last year has given scientists new insight into the fabric of the Universe.
While the
burst's afterglow showed a steady decline in brightness
at both optical and X-ray wavelengths, that was not the case
at radio wavelengths.
Crowds stand and cheer
at the start line for races,
bursts of confetti from cannons greet you
at the finish and there's three
radios station to choose from that constantly pump out a fantastic music selection and chat about what is going on in the world of Horizon.
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Radio interview, NewsTalk106, 10 April On - site
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Bursting the Art Bubble, The Irish Times, 25 January, p. 16 2004 Paul McDevitt
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at the Towner Art Gallery, 24hourmuseum.org.