Sentences with phrase «radio emissions in»

«Analyzing the radio emission in detail, we realized the electrons lost energy along the jet and were re-energized in the region of the shock.

In addition to detecting the bright bursts from FRB 121102, the VLA observations also revealed an ongoing, persistent source of weaker radio emission in the same region.

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.

Rampadarath explains: «Comparing the VLA images at radio wavelengths to Chandra's X-ray observations and the hydrogen - emission detected by Hubble, shows that features are not only connected, but that the radio outflows are in fact the progenitors of the structures seen by Chandra and Hubble.

A blazar, a galaxy that kicks out fluctuating X-rays, might also have been responsible, but blazars are easily identified by their strong radio emissions, something not apparent in this source (Nature, DOI: 10.1038 / nature08083).

Radio galaxies typically produce two jets of radio frequency emissions spewing into space in opposite directRadio galaxies typically produce two jets of radio frequency emissions spewing into space in opposite directradio frequency emissions spewing into space in opposite directions.

Instead of using visible light, Dame and others map the Milky Way by looking for radio emissions from molecular gas clouds and massive, young stars, both of which typically reside in spiral arms.

- The giant radio telescopes of NASA's Deep Space Network — which perform radio and radar astronomy research in addition to their communications functions — were tasked with observing radio emissions from Jupiter's radiation belt, looking for disturbances caused by comet dust.

In this image, green is radio emission seen by the VLA, with white and red being an infrared image from NASA's WISE satellite.

Mooley and colleagues suggest that the rise in radio wave emissions could be explained if the jet slammed into a shell of neutron - rich material kicked out in the neutron star crash, transferring most of its energy to that debris and smothering the jet.

Also, the radio observation results of molecular line emission of methanol revealed in vivid detail an hourglass structure created by gas outflows spreading outward while thrusting the ambient gas cloud away.

ALMA can map radio emissions from the warm dust and gravel in disks.

The long lag before astronomers began to pick up radio and x-ray emissions supports that picture, says Raffaella Margutti, an astrophysicist at Northwestern University in Evanston, Illinois, who studied the event with NASA's orbiting Chandra X-ray Observatory.

«The new piece here is that the UV aurora has not been observed to pulse in the way the radio emissions do,» Clarke says.

As the Saturn kilometric radiation (so known because the radio emissions» wavelengths are measured in kilometers), or SKR, emanates from the gas - giant planet, its intensity oscillates every 10.5 hours or so, nearly in concert with the planet's rotation.

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.

Using the Very Large Array of the National Radio Astronomy Observatory in the US, the team observed radio emission from hydrogen in a distant galaxy and found that it would have contained billions of young, massive stars surrounded by clouds of hydrogenRadio Astronomy Observatory in the US, the team observed radio emission from hydrogen in a distant galaxy and found that it would have contained billions of young, massive stars surrounded by clouds of hydrogenradio emission from hydrogen in a distant galaxy and found that it would have contained billions of young, massive stars surrounded by clouds of hydrogen gas.

They show that as the plasma expands into the surrounding vacuum, the ions and electrons travel at different speeds and separate in a way that creates radio frequency emissions.

That cross-correlation confirms that the radio emissions do in fact trace the large - scale structure of the universe, Chang says.

NEW DELHI — In a report that departs from the scientific mainstream, an Indian government panel is warning that radio emissions from cell phones may pose a hazard to public health.

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.

Her team studied infrared and radio wave emissions from disks in several star - forming clusters with well - known ages.

In earlier observations, emission from two or more faint objects often was blurred or blended into what appeared to be a single, stronger source of radio waves.

«In the previous studies, astronomers have estimated the size based on radio emissions assuming hypothetical spherical dust particles,» explains Kataoka.

In the same way large antennas on rooftops direct emission of classical radio waves for cellular and satellite transmissions, the nano - antenna efficiently directed the single photons emitted from the nanocrystals into a well - defined direction in spacIn the same way large antennas on rooftops direct emission of classical radio waves for cellular and satellite transmissions, the nano - antenna efficiently directed the single photons emitted from the nanocrystals into a well - defined direction in spacin space.

In the next few years, the array will also scan for artificial radio emissions as part of the search for extraterrestrial intelligence (SETI) at lower, neglected frequencies than past SETI missions.

«The processes near a black hole that kick out radio emissions are basically unknown,» says Edward Fomalont, an astronomer at the National Radio Astronomy Observatory in Virgradio emissions are basically unknown,» says Edward Fomalont, an astronomer at the National Radio Astronomy Observatory in VirgRadio Astronomy Observatory in Virginia.

«We think it's quite possible that the radio beam is narrower than the gamma - ray emission, but we don't yet know how gamma rays are produced in the pulsar,» says Fermi project scientist Steve Ritz of NASA's Goddard Space Flight Center in Greenbelt, Maryland.

By contrast, the radio emission from radio - quiet quasars is extremely feeble and difficult to see, so it has been hard to identify its source,» explained Jackson of the Jodrell Bank Centre for Astrophysics in Manchester.

By analyzing nearly 8000 quasars from the Sloan Digital Sky Survey, Schulze's team found that on average the O III oxygen emissions are 1.5 times stronger in radio loud quasars than in radio quiet quasars.

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.

«In radio - loud quasars, the intense radio emission clearly comes from vast jets of material blasted out from the region around a central 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.

A spatially adaptive broadcast system allows the broadcaster to adapt the geographical coverage from the transmitter based on what is actually happening in real - time to the radio frequency emissions.

Mini-jets of material ejected from a central supermassive black hole appear to be the culprits behind faint radio wave emissions in «radio - quiet» quasars.

The Giant Metrewave Radio Telescope (GMRT), which is installed near Pune in India and operates in the radio band, pointed to the link between the radio emission and a galaxy by locating the origin of the electRadio Telescope (GMRT), which is installed near Pune in India and operates in the radio band, pointed to the link between the radio emission and a galaxy by locating the origin of the electradio band, pointed to the link between the radio emission and a galaxy by locating the origin of the electradio emission and a galaxy by locating the origin of the electrons.

Thomas Dame at the Harvard - Smithsonian Center for Astrophysics in Massachusetts and his colleagues got around this by looking at a jet of radio waves that can outshine any emissions from that mess of stars.

«Radio emissions from the regions in which clusters collide were first detected almost 20 years ago, but no one was able to explain how electrons could be accelerated to the point where they emitted radiation in this frequency band.

Unimaginably powerful sources of radio emissions, brighter than entire galaxies, quasars were initially viewed as mysterious objects found billions of light - years from us but unknown in our own galactic neighborhood.

«The radio emission these students discovered coming from this brown dwarf is 10,000 times stronger than anyone expected,» said Dale Frail, an astronomer at the National Radio Astronomy Observatory (NRAO) in Socorroradio emission these students discovered coming from this brown dwarf is 10,000 times stronger than anyone expected,» said Dale Frail, an astronomer at the National Radio Astronomy Observatory (NRAO) in SocorroRadio Astronomy Observatory (NRAO) in Socorro, NM.

«Many astronomers are surprised at this discovery, because they didn't expect such strong radio emission from this object,» said Shri Kulkarni, a Caltech professor who was on the team that first discovered a brown dwarf in 1995, and advisor to one of the students.

The first is the FIELDS experiment which will examine the different fields in the corona, including the Sun's magnetic field, electric fields, waves, plasma density, electron temperature, density fluctuations and radio emissions.

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.

Since the research team had already conducted radio observations of various molecular emissions in this galaxy with the 45 - m telescope at the Nobeyama Radio Observatory of NAOJ, they aimed to develop their research further with ALMA and identify the difference in chemical composition between AGNs and starburst regradio observations of various molecular emissions in this galaxy with the 45 - m telescope at the Nobeyama Radio Observatory of NAOJ, they aimed to develop their research further with ALMA and identify the difference in chemical composition between AGNs and starburst regRadio Observatory of NAOJ, they aimed to develop their research further with ALMA and identify the difference in chemical composition between AGNs and starburst regions.

Over the past few years, advances in the development of software defined radio (SDR) have encouraged tinkerers to construct low - cost radio telescopes suitable for detecting emission from galactic neutral hydrogen.

Water Emissions - In September of 2002, a team of astronomers (including Cristiano Cosmovici of the Institute for Cosmic and Planetary Science) announced at the Second European Workshop on Exo / Astrobiology that they had detected water «maser» emissions from three of 17 star systems suspected of hosting planets, including Upsilon Andromedae, using the 32 - meter Medicina radio telescope nearEmissions - In September of 2002, a team of astronomers (including Cristiano Cosmovici of the Institute for Cosmic and Planetary Science) announced at the Second European Workshop on Exo / Astrobiology that they had detected water «maser» emissions from three of 17 star systems suspected of hosting planets, including Upsilon Andromedae, using the 32 - meter Medicina radio telescope nearemissions from three of 17 star systems suspected of hosting planets, including Upsilon Andromedae, using the 32 - meter Medicina radio telescope near Bologna.

Ongoing radio observations (SMA, JCMT, VLA) of Sirius A are being used to set an observationally determined standard for stellar atmosphere modeling and debris disk studies around A stars, as well as to take the first step toward characterizing potential intrinsic uncertainty in stellar emission at these wavelengths.

«The mere fact that they detected radio emission is remarkable,» said Tim Bastian, an astronomer at the NRAO in Charlottesville, Virginia, who added that this object «will likely have something to teach us.»

A group of summer students making a long - shot astronomical gamble with the National Science Foundation's (NSF) Very Large Array (VLA) have found the first radio emission ever detected from a brown dwarf, an enigmatic object that is neither a star nor a planet, but something in between.

The width of the absorption lines from the stars or the radio emission lines from the gas in a galaxy depend on the amount of stellar motion in the galaxy.