Sentences with phrase «lighthouselike radio beams»

Random changes in the radio beam of a pulsar orbiting a black hole could be telltale quantum effects, giving us a way to test theories of quantum gravity

As I passed the slower cars and tried to beat the traffic lights, it struck me: I was trying to outrun a radio beam, heading Earthward at the speed of light.

Among the most exotic beasts in the astrophysical zoo are millisecond pulsars, which spin hundreds of times every second while flashing radio beams across the galaxy.

«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.

They passed each beam — which carried its own independent stream of data — through a «spiral phase plate» that twisted each radio beam into a unique and orthogonal DNA - like helical shape.

This dead remnant of a star glows red like a hot ember, and is spinning 173 times per second, emitting powerful radio beams that sweep across the sky as it rotates.

By analyzing the radio beams, researchers can probe the wild things that

PULSAR PAIR A system of two radio beam — emitting pulsars locked in tight orbits, illustrated here, is an ideal test bed for measuring gravitational waves and other effects of general relativity.

That is the claim being made by a group of scientists in Italy and Sweden, who have shown how a radio beam can be twisted, and the resulting vortex detected with distant antennas.

The researchers hope to start testing a partially spiralled satellite dish within the next few days, then to use a similar device to transmit a twisted radio beam several hundred metres across the lagoon in Venice three months from now.

Not exact matches

She's competing against WattUp from Silicon Valley's Energous Corp., which beams a 5.8 GHz radio frequency that wireless devices convert into DC power, and may debut in early 2016 in devices developed by SK Telesys (a Korean rival of Samsung) and manufactured by Taiwanese tech giant Foxconn.

We are familiar with radio and television waves, and we are learning the physics of penetrating light, as in laser beams.

Discovered initially by lighthouse - like beams of radio emission, more recent research has found that energetic pulsars also produce beams of high energy gamma rays.

Devices like this superconducting radio frequency cavity accelerate electron beams in the world's most powerful particle colliders and X-ray sources to nearly the speed of light.

The array will beam 2.1 megawatts of radio energy into the ionosphere — the region that starts at 100 kilometers above the ground, where solar photons and charged particles crash into Earth's atmosphere.

The researchers observed FRB 150807 while monitoring a nearby pulsar — a rotating neutron star that emits a beam of radio waves and other electromagnetic radiation — in our galaxy using the Parkes radio telescope in Australia.

Cars beaming short - range radio signals in 360 degrees and broadcasting their exact position on the road at every moment could auto - drive together, bumper to bumper, at high speeds.

Because of the extreme distances and power limitations of the radio antenna, data from the New Horizons encounter, which in July flew within 12,500 kilometers of Pluto's surface, is still being beamed back to Earth.

Astronomers have known since 1968 that a pulsar — an ultradense neutron star left behind when the star's core collapsed — spins 30 times per second within the Crab's expanding cloud of debris, emitting a lighthouse beam of radio waves.

The measurement comes from analyzing the only known pair of gravitationally bound pulsars, dense cores of dead stars that emit intense beams of radio waves with the regularity of a nearly perfect clock.

They are detected from Earth by the beams of radio waves that emanate from their magnetic poles and sweep across space as the pulsar rotates.

Radio signals beamed down fibre - optic cables will enable cheap wireless internet to be spread far and wide

Power will be supplied by an external source that beams radio waves through the skin and skull.

The radio and x-ray signals come from the jet, which at first would have beamed them too narrowly along its axis to be seen from Earth.

This «beam - forming» capability makes the antennas crucial to ultrafast wireless applications, because they can focus a stream of high - frequency radio waves that would quickly dissipate using normal antennas.

Transmitting readings from all those spacecraft would be difficult with radio signals, so the Telecommunications Orbiter will send information home via beams of laser light.

They could then change the radio frequency of each beam to «switch off» the tweezers without atoms, and rearrange those with atoms, to create arrays that were free of defects.

From Earth, they appear to pulsate because the beams of radio waves they emit from their poles sweep past the Earth with every revolution.

At its center is a super-dense neutron star, rotating once every 33 milliseconds, shooting out rotating lighthouse - like beams of radio waves and light — a pulsar (the bright dot at image center).

They then directed a second laser beam through an instrument that splits the laser beam into many smaller beams, the number and angle of which depend on the radio frequency applied to the deflector.

Last year astronomers used the telescope at Arecibo, Puerto Rico, to send a beam of radio waves to Titan.

A question that's long vexed astrophysicists is how the gargantuan energy fountains called radio - loud quasars propel tight beams of particles and energy across hundreds of thousands of light - years.

«We could make a very small version of SPS - Alpha and slightly modify the transmitter before launch to send radio signals rather than a microwave beam.

Since the late 1950s, the prevailing logic has been that aliens might be beaming radio signals into space, so we need only tune to the right frequency to listen in.

The same is true when you use a mixer in the kitchen, or a drill, or turn on a fan — unless you're trying to beam radio signals to aliens, pretty much all of the energy you use will end up heating the Earth.

ITER, which will be finished in 2019 or 2020, will attempt fusion by containing a plasma with enormous magnetic fields and heating it with particle beams and radio waves.

Most other pulsars have been found using radio telescopes, although some also beam energy in visible light and X-rays.

The planet orbits its parent sun — a pulsar, or a rapidly - spinning neutron star that emits an intense beam of radio waves, dubbed PSR J1719 - 1438 — once every 2 hours and 10 minutes, the researchers report online today in Science.

In 1974, scientists beamed a radio message to space from the Arecibo Observatory radio telescope in Puerto Rico.

Wider beams are better able to cope with obstacles between the transmitter and the receiver, and radio is not as affected by atmospheric turbulence as optics,» Willner said.

Because of the complexity of the signals and the fact that they are not beamed specifically at the earth, however, the receiver we would need in order to eavesdrop would have to be much more elaborate and sensitive than any radio - telescope system we now possess.

The system, built by L - 3 Communications in Woburn, Mass., emits beams of radio - frequency energy that are tuned to reflect well off human skin.

If there are indeed civilizations thousands or millions of years more advanced than ours, it is entirely possible that they could beam radio communications over immense distances, perhaps even over the distances of intergalactic space.

In view of these circumstances, which should be common to and deducible by all the civilizations in our galaxy, it seems to us quite possible that one - way radio messages are being beamed at the earth at this moment by radio transmitters on planets in orbit around other stars.

Neutral beams and a variety of radio - frequency heating methods can provide tens of megawatts of heating power for creating high - temperature plasmas.

It will be beamed three times in succession at four sunlike stars about 60 light - years from Earth, using a 70 - meter radio dish at the Evpatoriya Radio Observatory in Ukrradio dish at the Evpatoriya Radio Observatory in UkrRadio Observatory in Ukraine.

Pinpointing Philae's whereabouts and orientation should now help scientists to interpret the data that the lander beamed back to Earth during its short life, in particular, in refining data from CONSERT, a radio instrument designed to study the comet's interior.

Pulsars emit powerful beams of radio waves that sweep across space like a lighthouse, but radio telescopes only notice these if Earth is in their path.

A scientist at the Swedish Insitute of Space Physics (IRF) in Uppsala has revealed how these beams generate radio waves.

The International LOFAR Telescope has issued a Call for Proposals with a submission deadline of Wednesday 8 March 2017, 12 UT The International LOFAR Telescope (ILT), a powerful next - generation radio telescope, offering synthesis imaging, beam - formed and time - series observing modes at frequencies below 240 MHz, solicits proposals from the international astronomical community for observations to be -LSB-...]