Sentences with phrase «by radio astronomers»

Very long baseline interferometry is a technique used by radio astronomers to electronically link widely separated radio telescopes together so they work as if they were a single instrument with extraordinarily sharp «vision,» or resolving power.

Very long baseline interferometry (VLBI) is a technique used by radio astronomers to electronically link widely separated radio telescopes together so they work as if they were a single instrument with extraordinarily sharp «vision,» or resolving power.

As the most abundant element in the Universe and the raw fuel for creating stars, hydrogen is used by radio astronomers to detect and understand the makeup of other galaxies.

In fact, Swift X-ray and optical observations were carried out two days after FRB 131104, thanks to prompt analysis by radio astronomers (who were not aware of the gamma - ray counterpart) and a nimble response from the Swift mission operations team, headquartered at Penn State.

The first serious SETI search was made in 1960 by the radio astronomer Frank Drake, and SETI has continued on the world's largest telescopes ever since.

Not exact matches

By finding places in the sky where radio telescopes pick up these 21 - centimeter emissions, astronomers can identify light from faraway, hydrogen - rich regions so ancient they date back to the era when stars were starting to form.

Such an excess first emerged in the late 1960s and was mapped in 1981 by Glyn Haslam of the Max Planck Institute for Radio Astronomy in Bonn, Germany, but few astronomers thought much of it until now.

«With ALMA we can see that there's a direct link between these radio bubbles inflated by the supermassive black hole and the future fuel for galaxy growth,» said Helen Russell, an astronomer with the University of Cambridge, UK, and lead author on a paper appearing in the Astrophysical Journal.

Now, astronomers have overcome that problem by tracking bright spots of radio emission from the Triangulum Galaxy — also known as M33 — which the new study locates at 2.4 million light years from Earth.

For astronomers who observe the universe through radio waves generated by stars and galaxies, interference from an Earth - based source can easily drown out any far - off signal.

The Search for Extraterrestrial Radio Emissions from Nearby Developed Intelligent Populations (SERENDIP) has scanned billions of radio sources in the Milky Way by piggybacking receivers on antennas in use by observational astronomers, including AreRadio Emissions from Nearby Developed Intelligent Populations (SERENDIP) has scanned billions of radio sources in the Milky Way by piggybacking receivers on antennas in use by observational astronomers, including Areradio sources in the Milky Way by piggybacking receivers on antennas in use by observational astronomers, including Arecibo.

Astronomers exploit it to combine light or radio waves collected by widely separated telescopes so that they act as a single huge instrument, as large as the distance between the two of them.

Using the world's largest radio telescope, two astronomers from Swinburne University of Technology in Australia have detected the faint signal emitted by atomic hydrogen gas in galaxies three billion light years from Earth, breaking the previous record distance by 500 million light years.

(Those reflectors were knocked askew by Hurricane George in 1998, says Cornell radio astronomer Donald Campbell.)

Astronomers have produced a highly detailed image of the Crab Nebula, by combining data from telescopes spanning nearly the entire breadth of the electromagnetic spectrum, from radio waves seen by the Karl G. Jansky Very Large Array (VLA) to the powerful X-ray glow as seen by the orbiting Chandra X-ray Observatory.

In a pair of papers in the 1 November issue of Astrophysical Journal Letters, radio astronomer Nichi D'Amico of the Bologna Astronomical Observatory in Italy and his colleagues report that the pulsar's faint radio blips disappear during nearly half of its orbit, presumably eclipsed by a shroud of gas from its companion.

Examining the dense globular cluster of stars that hosts the pulsar, astronomers led by Francesco Ferraro, also at Bologna, found a red star near the pulsar's radio position.

Chang says it would cost about $ 20 million, a tiny fraction of the $ 2 billion radio astronomers want for the proposed Square Kilometre Array (SKA) of radio telescopes, which aims to trace large - scale structure by locating individual galaxies.

An interdisciplinary team of UvA physicists and astronomers proposed to search for primordial black holes in our galaxy by studying the X-ray and radio emission that these objects would produce as they wander through the galaxy and accrete gas from the interstellar medium.

In spite of the recent detection of gravitational waves from binary black holes by LIGO, direct evidence using electromagnetic waves remains elusive and astronomers are searching for it with radio telescopes.

Astronomers often search for gas by observing neutral hydrogen, which broadcasts radio waves at a wavelength of 21 centimetres.

Yet it somehow devours only a tiny fraction of its available food supply — a smorgasbord of gas and dust cast off by nearby stars, notes radio astronomer Heino Falcke of Radboud University Nijmegen in the Netherlands.

A team of astronomers has doubled the number of known young, compact radio galaxies — galaxies powered by newly energized black holes.

Radio astronomer Mark Reid's work to map the Milky Way galaxy may be set back a year by the closure of U.S. radio telescRadio astronomer Mark Reid's work to map the Milky Way galaxy may be set back a year by the closure of U.S. radio telescradio telescopes.

New research by Harvard astronomers Peter Williams and Edo Berger shows that the radio emission believed to be an afterglow actually originated from a distant galaxy's core and was unassociated with the fast radio burst.

It was first identified as a millisecond radio pulsar in 2005 with the National Science Foundation's Robert C. Byrd Green Bank Telescope (GBT) and then later rediscovered as an X-ray pulsar by another team of astronomers in 2013.

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.

Upon closer examination of the data — compiled from nearly 500 hours of observation by the 64 - meter Parkes radio telescope in Australia — a team led by astronomer Duncan Lorimer of West Virginia University in Morgantown estimated that the blast actually came from about 3 billion light - years away.

Then in 2011, a team of radio astronomers led by Matthew Bailes of Australia's Swinburne University of Technology found a third planetary system around a pulsar, one unlike either of the previous two.

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.

Fortunately, a team of radio astronomers led by Bill Junor at the University of New Mexico, Albuquerque, had access to just such a telescope: the Very Long Baseline Array (VLBA).

Radio astronomers have used a radio telescope network the size of the Earth to zoom in on a unique phenomenon in a distant galaxy: a jet activated by a star being consumed by a supermassive black Radio astronomers have used a radio telescope network the size of the Earth to zoom in on a unique phenomenon in a distant galaxy: a jet activated by a star being consumed by a supermassive black radio telescope network the size of the Earth to zoom in on a unique phenomenon in a distant galaxy: a jet activated by a star being consumed by a supermassive black hole.

«Observations with the next generation of radio telescopes will tell us more about what actually happens when a star is eaten by a black hole — and how powerful jets form and evolve right next to black holes,» explains Stefanie Komossa, astronomer at the Max Planck Institute for Radio Astronomy in Bonn, Gerradio telescopes will tell us more about what actually happens when a star is eaten by a black hole — and how powerful jets form and evolve right next to black holes,» explains Stefanie Komossa, astronomer at the Max Planck Institute for Radio Astronomy in Bonn, GerRadio Astronomy in Bonn, Germany.

Since Lew Snyder and David Buhl discovered interstellar formaldehyde in 1969, astronomers have identified more than 150 molecules in deep space, mostly by using radio telescopes to detect the faint radiation the molecules emit.

By 2000 radio astronomers had found almost all of them in various dust clouds throughout our galaxy, suggesting that the interplay between ice and gas may be one of the most important mechanisms for synthesizing the precursors of life.

She said the event was first picked up by the All - sky Automated Survey for Supernovae (ASAS - SN), which is pronounced «assassin» by astronomers, and followed up with the Arcminute Microkelvin Imager (AMI), a radio telescope, located near Cambridge.

But if astronomers knew the rate at which hydronium converts to water, then they could estimate the amount of water in the clouds by measuring hydronium, which can be detected by radio telescopes.

First developed by British radio astronomers in 1946, arrays make use of several radio telescopes spaced some distance apart, «synthesizing» a single telescope with an aperture equal to the spacing between the farthest elements.

Next month, astronomers will harness radio telescopes across the globe to create the equivalent of a single Earth - spanning dish — an instrument powerful enough, they hope, to image black holes backlit by the incandescent gas swirling around them.

Fortunately, astronomers have been able to use longer radio wavelengths that are not absorbed by the obscuring dust and radiowave - emitting molecules like carbon monoxide (which are concentrated in the spiral arms) to trace the spiral disk's structure.

And this allows them to do something new: to tell their astronomer colleagues roughly where to look in the sky, using ordinary telescopes, for some form of electromagnetic waves (perhaps visible light, gamma rays, or radio waves) that might have been produced by whatever created the gravitational waves.

The top candidates, the astronomers suggested, are a neutron star, possibly a highly - magnetic magnetar, surrounded by either material ejected by a supernova explosion or material ejected by a resulting pulsar, or an active nucleus in the galaxy, with radio emission coming from jets of material emitted from the region surrounding a supermassive black hole.

Now, astronomers from MIT and Arizona State University have peered right back to the «Cosmic Dawn» — the time when the first stars were beginning to fire up — by picking up an extremely faint radio signal that marks the earliest evidence of hydrogen, just 180 million years after the Big Bang.

The astronomers began their quest by using the VLBA to make very high resolution images of more than 1,200 galaxies, previously identified by large - scale sky surveys done with infrared and radio telescopes.

Astronomers have now peered right back to the «Cosmic Dawn» — when the first stars were beginning to fire up — by picking up an extremely faint radio signal that marks the earliest evidence of hydrogen, just 180 million years after the Big Bang.

«By doing this survey and making the results available, we are bringing low - frequency radio data, previously quite difficult to produce, to all astronomers in a simple and easy manner,» Perley said.

Astronomers using the ALMA radio telescope detected that the supersonic jet and the accretion disk survives the ultraviolet radiation generated by the birth of a massive star.

But then two years ago, astronomers spotted a fast radio burst (FRB) that repeats, a phenomenon that can't be explained by a one - off event.

The package is a mainstay and a daily tool for most of the world's radio astronomers, and also has been used by scientists in such other fields as fluid - dynamics simulation and medical imaging.

For example, SLF radio waves at 60 Hz may be received and studied by astronomers, or may be ducted along wires as electric power.