| 单词 | radio emission |
| 例句 | An extraterrestrial civilization monitoring the radio emission from Earth and receiving such signals could not fail to conclude that something interesting had been happening here lately. Cosmos 1980-01-01T00:00:00Z That Jupiter is a source of radio emission was discovered accidentally in the 1950’s, the early days of radio astronomy. Cosmos 1980-01-01T00:00:00Z The radio emissions of Saturn, recorded by the Cassini spacecraft, were shifted into audible frequencies, and the Kronos Quartet then incorporated the space sounds into a composition called "Sun Rings." ArtsBeat: New Will.i.am Song Broadcast From Mars 2012-08-28T20:42:14Z Researchers say the novel radio emission shares characteristics with the auroral radio emissions commonly seen in planetary magnetospheres such as those around Earth, Jupiter and Saturn, as well as certain low-mass stars. Scientists uncover aurora-like radio emission above a sunspot 2023-11-13T05:00:00Z Imagine a radio emission so powerful that it released as much energy in a fraction of a second as our Sun releases over 30 years. Most distant radio burst ever discovered contained the amount of energy our Sun makes every 30 years 2023-10-24T04:00:00Z Being so small, pulsars spin with enormous frequencies, emitting bright narrow beams of radio emission along their axis of rotation. Pulsars may make dark matter glow 2023-10-06T04:00:00Z This reddening-radio connection is likely due to powerful outflows of gas driven away from the supermassive black hole, which slam into the surrounding dust, causing shocks and radio emission. Hidden supermassive black holes reveal their secrets through radio signals 2023-09-25T04:00:00Z The data captures radio emission from cosmic dust in these distant galaxies. Tag team of the James Webb Space Telescope and ALMA captures the core of the most distant galaxy protocluster 2023-09-20T04:00:00Z Accelerating toward the north and south poles, such electrons can generate intense radio emissions at frequencies around a few hundred kHz. Scientists uncover aurora-like radio emission above a sunspot 2023-11-13T05:00:00Z Yet unlike our massive and nearby Sun, this radio emission known as FRB 20220610A is tiny and comes from 8 billion light years away, as detailed in the journal Science. Most distant radio burst ever discovered contained the amount of energy our Sun makes every 30 years 2023-10-24T04:00:00Z Not only that, they also successfully detected supernova radio emission for the very first time! Tune in to the Supernova Radio! 2023-06-08T04:00:00Z These outflows will eventually blow away all the dust and gas in the central region of the galaxy, revealing a blue quasar and resulting in weaker radio emission. Hidden supermassive black holes reveal their secrets through radio signals 2023-09-25T04:00:00Z This, they said, was consistent with quasars of different "brightnesses," meaning with varying strength to their radio emissions. Scientists solved a six-decade mystery about the brightest, most powerful objects in the universe 2023-04-30T04:00:00Z "Instead, sporadic flare activity in nearby active regions seems to pump energetic electrons into large-scale magnetic field loops anchored at the sunspot, which then power the ECM radio emission above the region." Scientists uncover aurora-like radio emission above a sunspot 2023-11-13T05:00:00Z The lunar far side is protected from radio emissions from Earth, and with almost no atmosphere and long, cold nights, it offers a nearly ideal spot from which to explore these epochs. Are Telescopes on the Moon Doomed? 2023-03-09T05:00:00Z They relaunched their search, now christened Project Phoenix, with the goal of examining the radio emissions of about 1,000 stars. Frank Drake, Who Led Search for Life on Other Planets, Dies at 92 2022-09-05T04:00:00Z Astronomers have found a striking link between the amount of dust surrounding a supermassive black hole and the strength of the radio emission produced in extremely bright galaxies. Hidden supermassive black holes reveal their secrets through radio signals 2023-09-25T04:00:00Z The other main source of radio emission is from electrons moving at high speed in regions with strong magnetic fields. Astronomy 2016-10-13T00:00:00Z The image, released in six simultaneous news conferences in Washington and around the globe, showed a lumpy doughnut of radio emission framing empty space. The Milky Way’s Black Hole Comes to Light 2022-05-12T04:00:00Z Hydrogen atoms naturally emit radio waves with a characteristic 21-centimeter wavelength, and because hydrogen gas clouds tend to gravitationally cluster around galaxies, patterns in this radio emission reflect matter’s underlying cosmic distribution. Canadian Telescope Delivers Deepest-Ever Radio View of Cosmic Web 2022-05-04T04:00:00Z The shockwave the supernova sends through the surrounding space heats up the newly dense environment, too, creating the radio emission astronomers observe. Record-Breaking Supernova Is Part of a New Class of Objects 2022-02-21T05:00:00Z They found that quasars that contained more dust, and therefore appeared redder, were more likely to have stronger radio emission compared to the quasars that had very little-to-no dust, appearing very blue. Hidden supermassive black holes reveal their secrets through radio signals 2023-09-25T04:00:00Z Figure 25.16 Sagittarius A. This image, taken with the Very Large Array of radio telescopes, shows the radio emission from hot, ionized gas in the center of the Milky Way. Astronomy 2016-10-13T00:00:00Z Colors denote the bright radio emissions from objects such as stellar nurseries and supernova remnants, the expanding shells of exploded stars. News at a glance: Mysterious space filaments, damaged dinosaur tracks, and edible worms 2022-02-02T05:00:00Z But radio telescopes can measure how the intensity of radio emission varies across the sky at many different wavelengths at once, enabling astronomers to construct three-dimensional maps without separate redshift measurements. Canadian Telescope Delivers Deepest-Ever Radio View of Cosmic Web 2022-05-04T04:00:00Z The radio emissions from such stars were initially believed to be aliens when such signals were first detected in 1967. In Earth's galactic backyard, a never-before-seen space anomaly blinks on and off 2022-02-01T05:00:00Z Observing the radio emission from quasars can also tell you about the energetics of the central supermassive black hole; whether it is launching powerful "winds" or "jets" that might shape the surrounding galaxy. Hidden supermassive black holes reveal their secrets through radio signals 2023-09-25T04:00:00Z Figure 6.18 shows such a radio image of a distant galaxy, where radio telescopes reveal vast jets and complicated regions of radio emissions that are completely invisible in photographs taken with light. Astronomy 2016-10-13T00:00:00Z The radio emissions Juno recorded are not what a person would hear if they went to Jupiter — space is a vacuum and does not carry soundwaves like air does on Earth. NASA releases new photos of Jupiter — and a recording of its moon that sounds like R2-D2 2021-12-19T05:00:00Z That coarse spatial resolution is a feature, not a bug: adding up the radio emission from all the hydrogen in each voxel allows astronomers to pick up faint signals they would not otherwise see. Canadian Telescope Delivers Deepest-Ever Radio View of Cosmic Web 2022-05-04T04:00:00Z Scientists suspect that its strong radio emissions be a result of the object having a very strong magnetic field, which fits the profile for it possibly being the hypothetical "'ultra-long period magnetar." In Earth's galactic backyard, a never-before-seen space anomaly blinks on and off 2022-02-01T05:00:00Z They also find that redder quasars are much more likely to have strong radio emission compared to typical blue quasars. Hidden supermassive black holes reveal their secrets through radio signals 2023-09-25T04:00:00Z The first quasars discovered looked like stars but had strong radio emission. Astronomy 2016-10-13T00:00:00Z The effect is akin to one astronomers have closely studied right here in the solar system: periodic radio emissions made by interactions between Jupiter and its moon Io. ‘Auroral’ Exoplanets Could Help Boost Searches for Alien Life 2021-10-11T04:00:00Z They saw an unmistakable signal: the regions of more intense radio emission overlapped with the positions of known galaxies and quasars. Canadian Telescope Delivers Deepest-Ever Radio View of Cosmic Web 2022-05-04T04:00:00Z The locations of these arrays are important, he explains, because they need to be in “radio-quiet” areas—far from artificial sources of significant radio emission. Searching for the Universe’s Most Energetic Particles, Astronomers Turn on the Radio 2021-04-27T04:00:00Z Signals called perytons, which are less energetic bursts of radio emission, also raised eyebrows until scientists determined their origin: a microwave oven. Alien hunters detect mysterious radio signal from nearby star 2020-12-18T05:00:00Z Among them: observing molecules of life, detecting radio emission of stars and conducting pulsar work. Cable failures endanger renowned Puerto Rico radio telescope 2020-11-15T05:00:00Z The result was a unique and multidimensional look — based on radio emissions, X-rays and gamma rays as well as old-fashioned visible light observations — at the complexities of death by black hole. A Black Hole’s Lunch: Stellar Spaghetti 2020-10-17T04:00:00Z The MWA searches for radio emissions at frequencies that are similar to FM radio frequencies. E.T. missing? Astronomers come up empty looking for technological signs of life in 10M star systems 2020-09-09T04:00:00Z The radio emission of charged particle showers in materials like ice is even more intense than optical signals at ultrahigh energies, making it an attractive probe into the extreme universe. Searching for the Universe’s Most Energetic Particles, Astronomers Turn on the Radio 2021-04-27T04:00:00Z Two also feature “an optical galaxy near the center of the radio emission.” 4 mystery objects spotted in deep space, unlike anything ever seen 2020-07-09T04:00:00Z MeerKAT’s keen radio eyes revealed an unexpected feature, however: titanic threads of radio emissions emerging from the maelstrom. Strange Extragalactic Strands Mystify Astronomers 2020-04-16T04:00:00Z “It is really a mysterious object, but some signs, like its colors and the absence of radio emission, point to ‘Oumuamua being a natural object,” Zhang explained. Mysterious interstellar object 'Oumuamua gets new origin story 2020-04-14T04:00:00Z By greatly increasing the telescope collecting area compared with that of current arrays, they will allow the detection of much fainter radio emissions from stars and hence will see farther across the Milky Way. A New Map of the Milky Way 2020-03-17T04:00:00Z The combined data show that the curved edge is indeed part of a cavity wall, because it borders an area rich in radio emission. Scientists Spot the Biggest Known Explosion in the Universe 2020-02-29T05:00:00Z The face-on star-forming galaxy theory, for example, was dashed, in part, due to the “lack of measurable optical emission” in comparison to the radio emission. 4 mystery objects spotted in deep space, unlike anything ever seen 2020-07-09T04:00:00Z The observations confirm the presence of the curved edge and also reveal a huge patch of radio emissions tightly bordering the curve, which would correspond to the expected bubble. Biggest cosmic explosion ever detected left huge dent in space 2020-02-27T05:00:00Z The latest survey, the most comprehensive to date of radio emissions, included the first search of the “Earth transit zone”. Astronomers to sweep entire sky for signs of extraterrestrial life 2020-02-14T05:00:00Z The pulsar’s metronome-like radio emissions showed researchers how this extreme relativistic system pulls space-time around it, causing the pulsar’s orbit to wobble exactly as predicted by general relativity. Daily briefing: Genetically engineered gut microbes can protect honey bees 2020-01-30T05:00:00Z It’s possible that the jet-feeding gas on the other side—the one opposite the detected cavity—was less abundant and the radio emission there dissipated more quickly as a result, the researchers said. Scientists Spot the Biggest Known Explosion in the Universe 2020-02-29T05:00:00Z First, it showed peculiar changes in intensity as a function of frequency and time, akin to intense solar radio emissions called solar radio bursts. Not all fast radio bursts are created equal 2020-01-05T05:00:00Z The low-frequency antennas observe radio emissions from pulsars—spinning neutron stars—and the epoch of reionization, when light from the universe’s first stars was ionizing the hydrogen in the space between galaxies. Giant radio telescope array prepares to begin construction in Australia and South Africa 2019-11-25T05:00:00Z Moreover, in most distant radio galaxies, unlike the ones nearby, the distribution of light tends to be aligned with the pattern of the radio emission. The Evolution of the Universe 2019-10-08T04:00:00Z These broadcasts were unpredictable: scan the embassy for radio emissions, and no bug was in evidence. The Cold War spy technology which we all use 2019-08-20T04:00:00Z Invisible light pollution, such as radio emission, is harder to control, in part because we don’t see it with our own eyes. Opinion | Is the Evening Sky Doomed? 2019-08-17T04:00:00Z By leaving emissions standards unchanged, the commission says that its existing standards are already strict enough to determine when radio emissions become problematic. The FCC says 5G is safe, again 2019-08-08T04:00:00Z To transform that into hard evidence, astronomers would like to see an FRB—and not just radio emission—emanate from a past superluminous supernova. Monster Magnetar Pinpointed as Trigger of Ultrabright Stellar Detonation 2019-02-14T05:00:00Z There were 10 other radio observations discovered in that portion of the sky, Law and his colleagues found, which allowed them to find the radio emission and then see its disappearance. Mysterious 'ghost' radio emissions have been found - and no one knows what's causing them 2018-10-08T04:00:00Z One paper focused on the region of Saturn’s atmosphere that produces auroral radio emissions to try to understand how those radio waves are produced. Cassini's Death Dive into Saturn Reveals Weird Ring "Rain" and More 2018-10-05T04:00:00Z Not only was it inexplicably glowing, and moving about alone, but it was also found using solely detections of its radio emissions — a-never-before-used technique for finding new rogue planets. Bizarre “rogue planet” found lurking in Earth’s galactic neighborhood 2018-08-07T04:00:00Z And in 1979, NASA’s Voyager 1 spacecraft detected very low-frequency radio emissions from the solar system’s largest planet—emissions that one might expect from lightning. Surprise! Jupiter's Lightning Looks a Lot Like Earth's 2018-06-07T04:00:00Z Falcke says the team will study solar flares, the aurora of Jupiter, and the galaxy's radio emissions. China’s moon mission will probe cosmic dark ages 2018-05-16T04:00:00Z At a similar epoch the onset of radio emission was also detected18. The X-ray counterpart to the gravitational-wave event GW170817 : Nature : Nature Research 2017-10-15T04:00:00Z But the various probes zooming through our cosmos are capable of capturing radio emissions from space objects. NASA’s eerie space sounds should be the playlist for your Halloween party 2017-10-31T04:00:00Z Perhaps with this new form of radio emissions detection, many more will be found in the future. Bizarre “rogue planet” found lurking in Earth’s galactic neighborhood 2018-08-07T04:00:00Z The radio emissions that Voyager 1 detected from Jupiter—dubbed “whistlers” because they resemble descending, whistled tones—were the first signs of lightning in the giant planet’s atmosphere. Surprise! Jupiter's Lightning Looks a Lot Like Earth's 2018-06-07T04:00:00Z Alessandra Corsi, an astronomer at Texas Tech University in Lubbock, and her collaborators kept looking for radio emissions using the Very Large Array in New Mexico. Colliding stars spark rush to solve cosmic mysteries 2017-10-15T04:00:00Z 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. Astronomers Are Finally Mapping the “Dark Side” of the Milky Way 2017-10-13T04:00:00Z This supposition is bolstered by the twisted, Z-like shape of the galaxy's radio emission — a large-scale structure thought to be produced by a galaxy collision, study team members said. Binary Giant Black Holes Spotted at Galaxy's Core 2017-09-21T04:00:00Z They hope to scale it up to measure the radio emissions of billions of electrons at once. Weighing the universe's most elusive particle 2017-06-29T04:00:00Z Interspersed with radio emissions from stars, the astronomers were surprised to find the characteristic heat emanations from some six million solar masses of dust. Our Universe’s Very Dusty Early, Early Beginnings 2017-03-08T05:00:00Z The radio emissions themselves, Dr. Chatterjee said, resemble the blasts from pulsars — the spinning neutron stars that emit clocklike pulses of radiation and whose discovery in 1968 did indeed elicit speculation about little green men. Astronomers Trace Brief Signals to a Faraway Galaxy 2017-01-04T05:00:00Z The Very Large Array measures radio emissions, represented here by red, which highlights the galaxy’s long arms. Red, White, and Blue in Space Photography 2016-07-01T04:00:00Z The more intriguing, yet highly unlikely outcome, would be the detection of a very ordered, narrow-band radio emission less than a hertz wide, which would indicate the presence of technology or an artificial structure. Computers Would Never Have Found 'Alien Superstructure' Star--It Required Citizen Science 2015-10-21T04:00:00Z Charged particles flare with radio emission as they travel along the brown dwarf’s magnetic field lines toward its atmosphere, where they collide with hydrogen atoms that subsequently release flashes of visible red light. Brown Dwarf Boasts Brightest Auroras Ever Seen [Slide Show] 2015-08-03T04:00:00Z The software will be open source, and all of the radio emissions the telescopes pick up will be released to the public. Anybody out there? Massive radio wave project to scan far regions for alien life 2015-07-20T04:00:00Z Researchers in the Netherlands measured the radio emissions generated by these showers and found that they varied markedly during fair weather and thunderstorms. Rays From Exploding Stars May Help Measure Strength of Thunderstorms 2015-04-24T04:00:00Z The evidence shows that NGC 1316 is a galactic serial killer – annexing other galaxies to feed itself in a disruptive pattern that’s helping it to outshine all other sources of radio emissions in its neighbourhood. Serial-Killing Star System Waits In A Galaxy Graveyard In The Furnace Constellation 2014-04-02T16:16:00Z These signals stemming from terrestrial plasma waves and radio emissions in the 2 Hz to 80 kHz range were first analysed in numeric form. The Most Surprising Sound Of 2013, And It's Very Uplifting Too 2013-12-19T13:55:00Z They even confirmed the presence of radio emissions emanating from it — the canonical autograph of intelligence. Searching for life 2013-10-16T17:20:03.667Z Alien civilisations could be leaking radio emissions, in the same way TV broadcasts and radar signals on Earth spread out into space. Anybody out there? Massive radio wave project to scan far regions for alien life 2015-07-20T04:00:00Z To avoid radio emissions from the sun, Lazio says observing during the lunar night would be far preferable. NASA Sites Lunar Far Side For Low-Frequency Radio Telescope 2013-08-31T01:28:00Z Researchers used the Low-Frequency Array radio telescope based in The Netherlands to observe radio emissions most likely caused by powerful auroras from planets outside of our solar system. Alien Auroras May Light Up Exoplanet Night Skies 2013-01-22T20:45:02.387Z “It’s an outflow of high energy particles that’s probably going to produce the radio emissions,” said Fender. Free-Floating, Nearby Black Holes Detectable By Decade's End, New Study Reports 2013-01-21T10:20:56Z Also, the team estimates, the stronger the electric field in a sprite, the higher the frequency of radio emissions will be. ScienceShot: Broadcast From On High 2012-12-20T17:15:00Z The antennas' receivers are chilled to just a few degrees above absolute zero—any warmer and their own radio emissions would interfere with those they receive. On Firmament Ground: Partially Completed ALMA Radio Telescope Already Generating Discoveries 2012-11-05T19:49:57.043Z It soon became one of the most famous scientific instruments in the world, recording radio emissions from outer space and setting the pattern for other radio astronomy observatories. Obituary: Sir Bernard Lovell 2012-08-07T13:24:46Z The center of the Milky Way seen in 6cm radio emission. Black Holes Are Coming! 2012-05-19T00:45:10.990Z If you look in optical light, the Crab is very steady; in radio emission, it's very steady; in very, very high-energy gamma rays it's very steady. Crab Nebula unleashes huge flare 2011-05-11T14:20:05Z The plans for the ATA called for a total of 350 individual six-meter radio antennas, all working in concert to detect radio emissions from civilizations that might exist elsewhere in the galaxy. Budget crunch mothballs telescopes built to search for alien signals 2011-04-24T10:15:00.453Z At a cosmology workshop held here on 20 March, scientists unveiled Tianlai, or "Sound of Heaven," a project to listen to radio emissions from deep space that may reveal the nature of dark energy. China to Tune in to the Music of Dark Energy 2011-03-25T16:12:13Z The radio emissions from these events are important for understanding the dynamics of the solar corona. Global solar observatory flares into life 2011-02-17T22:45:00.227Z 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. Indian Report, at Odds With Mainstream, Raises Mobile Phone Concerns 2011-02-04T19:18:25Z Ms. Gibson and a neighbor, Carol Dunn, said they measured radio emission levels in their apartments, and found them to easily exceed federal limits. Good Cellphone Service Comes at a Price 2010-08-20T14:52:00Z The researchers developed a way to measure such imprints by observing the radio emission of hydrogen gas. Green Bank Telescope Enables "Intensity Mapping" to Shed Light on Mysteries of Dark Energy 2010-07-23T14:31:00Z It is used to trace radio interference and look for dangerous radio emissions. The Jargon File, Version 4.2.2, 20 Aug 2000 |
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