A very fast-spinning and highly dense object that emits light, radio and/or X-rays in very tight beams, similar to a lighthouse.
A dense, rotating object in the universe that emits bursts (pulses) of radio waves.
A stellar source, such as a rotating single star or pair of stars, emitting electromagnetic radiation which is characterised by rapid frequency and regularity.
A neutron star that rotates very rapidly and sends out regular pulses of radio waves, sometimes several hundred to a thousand times a second Quasar - An extreme form of active galaxy. It is the most luminous object known in the universe Radius - Shortest distance from the center of a circle or sphere to the circumference or surface
A rapidly spinning neutron star that emits energy in pulses. Pulsars were discovered in 1967 by S. Jocelyn Bell Burnell (1943- ), who was a Cambridge University astronomy graduate student at the time. Her graduate advisor (Anthony Hewish) was given a share of the 1974 Nobel Prize, but Bell was ignored. No one had any idea what these unusual objects were at the time, so the name little green men (LGM) was used. Soon, Thomas Gold suggested that pulsars were rapidly-spinning neutron stars, the remnants of a supernova.
very small, highly condensed, rapidly spinning star emitting a narrow beam of electromagnetic radiation, observed as a fast pulse from Earth. Believed to be the neutron core remnant of a supernova explosion.
A pulsar is a rapidly rotating neutron star that can rotate hundreds of times each second. They give out intense radio waves, that sweep by the Earth like a lighthouse beam with every rotation, registering as a short pulse on radio telescopes. Jocelyn Bell Burnell discovered pulsars in 1967.
A rapidly rotating object, now known to be a neutron star, an extremely dense collapsed star where the electrons have been forced into the protons. The object is thus made up mainly of neutrons and a few kilometers in diameter. Pulsars emit magnetic field constrained beams of radio, visible, x-ray and gamma radiation, which we perceive as pulses as these objects whirl, sometimes at hundreds of revolutions a second.
A rapidly 'pulsing' source of radio radiation (and, sometimes, optical and other wavelengths, as well), created by the rotation of a neutron star within a surrounding cloud of ionized gas. As the neutron star rotates, its magnetic field, rotating with it, sweeps through the ionized gas, heating it and accelerating it to speeds close to the speed of light. This causes the gas to give off synchrotron radiation, which is beamed only in a narrow cone, as a result of relativistic effects. As the cone sweeps past us, we see the radiation, and then we don't, in very rapid order.
A magnetized, spinning neutron star that emits a beam of radiation; radio waves and sometimes also light and x rays).
Any of several celestial radio sources emitting short, intense bursts of radio waves, x-rays, or visible electromagnetic radiation at regular intervals, generally believed to be rotating neutron stars.
A pulsating radio star, which is thought to be a rapidly spinning neutron star; the latter is formed when the core of a violently exploding star, called a supernova, collapses inward and becomes compressed together; pulsars emit extremely regular pulses of radio waves
A radio source that emits short pulses of radiation at regular intervals.
a celestial source of pulsating electromagnetic radiation characterized by short relatively constant interval between pulses that is held to be a rotating neutron star
Object that emits radiation in the form of rapid pulses with a characteristic pulse period and duration. Charged particles, accelerated by the magnetic field of a rapidly rotating neutron star, flow along the magnetic field lines, producing radiation that beams outward as the star spins on its axis.
young neutron star with a strong magnetic field and rapid rotation that produces beams of radiation out of its magnetic poles. If the beams cross our line of sight, we see the star ``pulsate'' (flash on and off).
A type of neutron star with a beam of emission that sweeps around as the star rotates.(empty)
a degenerate neutron star; small and extremely dense; rotates very fast and emits regular pulses of polarized radiation
a dense and compact star that forms from the collapsing core left over from the death of a massive star
a dense, rapidly spinning remnant of a supernova explosion
a fast-spinning neutron star, a tightly packed mass of neutrons, like a single huge atomic nucleus
a much smaller mass object, much smaller in radius and not a black hole, but a neutron star (it "failed" to become a black hole during its birth due to a supernova explosion of some single star)
a neutron star that emits pulsed radio signals
a neutron star that emits radio waves at regular intervals, which are the result of fast moving particles being accelerated by the intense magnetic fields present
a neutron star that emits steady pulses of radiation with each rotation
a neutron star that sends out or beams regular pulsating waves that can be picked up on Earth
a neutron star that spins fast enough that it gives off pulses of radio waves
a neutron star , the extremely dense remnant of a massive normal star that has undergone a supernova explosion
a neutron star which emits beams of radiation that sweep through the earth's line of sight
a neutron star which is the collapsed core of a massive star that has ended its life in a supernova explosion
a neutron star which periodically beams radio waves toward the earth
an extremely dense rotating neutron star, formed when the core of a star is crushed to a smaller object with an enormously high magnetic field
a rapidly spinning neuron star producing radio beams
a rapidly spinning neutron star producing radio beams
a rapidly spinning neutron star that emit bursts of radiation with telltale regularity
a rapidly spinning neutron star that emits massive amounts of radiation in rapid pulses that occur at regular intervals
a rapidly spinning neutron star that emits radio waves with clock-like regularity
a rapidly spinning neutron star that emits rapid, regular bursts of radio waves
a rapidly spinning neutron star that has a mechanism to beam light, much like a lighthouse
a regularly pulsating source of radiation, the pulsations believed to involve the magnetic field of a rotating neutron star
a rotating neutron star possessing high magnetic fields and spewing energy in a searchlight pattern, usually observed at radio wavelengths
a rotating neutron star with skewed magnetic poles
a small, rapidly spinning and highly magnetised neutron star that results from the violent collapse of a massive star in a supernova explosion
a source of pulsating electromagnetic radiation in the galaxy
a special type - a spinning neutron star that emits radio waves
a spinning neutron star, created by the collapse of the core of a dying star
a spinning neutron star producing powerful beams of radiation
a spinning neutron star that emits jets of particles and very powerful beams of light
a spinning neutron star, which itself formed from the death of a massive star
a star made of highly compressed matter
a tiny but dense spinning star that sends out a powerful beam of microwaves that flashes on and off like a beacon
a very massive, very small, rapidly-spinning neutron star which forms as a result of the star running out of fuel and going supernova
a very old star that emits its light in beams that can sweep across our field of view (sort of like light from a lighthouse)
a virtually dead star, a neutron star, that rotates rapidly and causes electromagnetic beams to be emitted like a lighthouse (i
a spinning neutron star that emits beams of radiation that happen to sweep across the Earth each time the star spins. We observe the radiation as regularly spaced pulses.
A rotating neutron star that emits regular pulses of radio waves.
A rotating neutron star whose radiation is observed as regular pulses.
a rapidly spinning neutron star that sends out pulses of radiation at regular intervals. Pulsars have extremely strong magnetic fields.
A neutron star that emits radio energy at regular intervals as it spins. It is thereby observed on Earth as a pulsating radio source.
A neutron star with a very high rate of spin, and very intense magnetic fields. The pulsar gives off beams of radiation along its magnetic poles. If these poles are not aligned with the spin poles, the beam will sweep around like the beam of a lighthouse.
A pulsating radio source. A typical pulsar has a pulse period of just less than one second, and a pulse width of a few percent of the pulse period. The shortest known pulsar has a period of 1.6 milliseconds; the longest known pulsar period is about 8.5 seconds. The pulse periods of pulsars remain very nearly constant over long periods of time (although increasing slightly over time). It is well accepted that pulsars are rotating neutron stars, and the pulse period equals the rotation period of the star. While the pulse emission mechanism is not well understood, the basic, most widely accepted model has the emission originating at or near the magnetic polar cap(s) of the highly magnetized rotating neutron star, and escaping along a relatively narrow "beam" pointing away from the magnetic polar cap. The magnetic axis is tipped with respect to the rotation axis, and therefore the "lighthouse beam" emitted by the pulsar sweeps the Earth once every rotation period (if the pulsar is oriented favorably). More.
neutron star emitting regular pulses of radio emission (sometimes also X-rays and/or visible light).
A pulsating radio source, a pulsar is a rapidly spinning neutron star oriented such that it appears to be a radio beacon.
A rotating neutron star that generates regular pulses of radiation. Pulsars were first discovered by observations at radio wavelengths but have since been observed at optical, x-ray, and gamma-ray energies.
A star that emits radiation in equally spaced pulses.
Object that emits radiation in the form of rapid pulses with a characteristic pulse period and duration. Generally used to describe the pulsed radiation from a rotating neutron star. [More Info: Field Guide
Discovered in 1967. Pulsars emit radio signals the pulsations of which are extremely precise. The evidence suggests that pulsars are fast-spinning neutron stars.
A celestial object that emits radio energy (sometimes light) in short, regular bursts; probably a rapidly rotating neutron star
a rotating neutron star which generates regular pulses of radiation.
A spinning neutron star that emits energy along its gravitational axis. This energy is received as pulses as the star rotates.
A neutron star (see above) that puts out pulses of radio energy. A pulsar is a neutron star that is emitting a beam of radio waves, and spinning, and so the effect is like that of a lighthouse. Pulsars keep exceptionally good time. Most of them 'pulse' at a rate between ten times a second and once every three seconds; some spin around hundreds of times a second.
A variable radio source of small angular size that emits very rapid radio pulses in very regular periods that range from fractions of a second to several seconds.
A celestial radio source with a well-defined modulation period, assumed to be the spin period of the central object.
a rapidly rotating neutron star that bathes Earth in regular pulses of electromagnetic radiation.
a neutron star which appears to emit energy in pulses. These pulses can be in any (and all) wavelengths.
A rapidly spinning neutron star that emits a bright beam of radiation from its magnetic poles. The name derives from the fact that the star appears to pulsate every time the beam sweeps past us (pulsar is short for 'pulsating star'). Crab Nebula (Supernova remnant)
A rapidly rotating neutron star that emits beams of radiation along misaligned magnetic axes.
A neutron star (burnt-out star) that emits radio waves which pulse on and off.
A neutron star with a very fast rotational component and strong magnetic field, which constrains emitting radiation to a cone. To be visible from Earth, a pulsar must be oriented such that the cone of emitted radiation intersects Earth.
The collapsed core that remains from a supernova explosion. A pulsar rotates so rapidly (typically about once a second) that energy associated with its magnetic field bursts forth once every rotation period.
Pulsars are rotating neutron stars which emit detectable electromagnetic radiation in the form of radio waves. The radiation intensity varies with a regular period, believed to correspond to the rotation period of the star. Pulsars also exhibit a so-called lighthouse effect, which occurs when the light and other radiation from a pulsar are only seen at specific intervals and not all of the time.