Binary Pulsars
Pulsars that orbit another significant physical object are referred to as binary pulsars. Usually the companion is a star, but not exclusively so. The main classes of binary pulsars are: ...
Binary pulsar
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Binary pulsars and general relativity
Many stars are members of binary systems, in which two stars orbit around each other with periods of some days or years. A number of binary systems are known in which one of the stars is a neutron star.
Binary pulsars
Accretion-powered pulsar ("X-ray pulsar")
X-ray burster - a neutron star with a low mass binary companion from which matter is accreted resulting in irregular bursts of energy from the surface of the neutron star.
Binary Pulsar System Explained
(Added 05/17/04) Pulsars are an extremely dense form of dead star that contains the sun's mass in a volume as wide as Manhattan, and they emit intense beams of energy, often in radio wavelengths.
A binary pulsar discovered in 1974, probably consisting of a neutron star and an even more compact object in an eccentric orbit, with an orbital period of 0.3230 days and a pulsation period of 59 milliseconds. (PSR 1913+16)
Hund's Rule ...
binary pulsar (Spacetime Wrinkles Glossary) A binary star system (a system where two stars orbit each other), where one of the two is a pulsar.
In 1974 the first binary pulsar—two stars, at least one of which is a neutron star, that orbit each other—was discovered by Russell A. Hulse and Joseph H. Taylor, for which they shared the 1993 Nobel Prize in Physics.
Another remarkable binary system is the binary pulsar. This was discovered in 1974 by Joe Taylor of Princeton University and Russell Hulse (U Mass).
They have been observed indirectly in the binary pulsar. Because the arrival time of pulses from the pulsar can be measured very precisely, it can be determined that the period of the binary system is gradually decreasing.
The development of instrumentation within the FCRAO labs contributed to the discovery of the binary pulsar system PSR 1913+16 by Joseph Hooton Taylor Jr. and Russel Hulse and for which they received the 1993 Nobel Prize in Physics.
This system has become known as the binary pulsar. Measurements of the periodic Doppler shift of the pulsar's radiation prove that its orbit is slowly shrinking.
One of the most exciting celestial objects discovered in late 2003 on the Parkes radio telescope is the first-known binary pulsar, PSR J0737-3039.
A pulsar in the Lonka Cluster A binary pulsar, viewed on the viewscreen of the USS Voyager A pulsar is a type of star, a rapidly rotating neutron star that sends out streams of electrons at nearly the speed of light along their magnetic poles.
both of Princeton and was the first known binary pulsar system. Hulse-Taylor has a mass very close to that of the Sun, and like other pulsars, it spins very rapidly on its axis, making approximately 17 complete revolutions every second.
"We think there should be more of these disrupted binary pulsars, but there haven't been that many found," says Professor Jim Cordes of Cornell University. Perhaps Einstein@home is the tool for discovering them?
Russell Alan Hulse
1950-
American
co-discovered the first binary pulsar
Others
Annie Jump Cannon
1863-1941
American
classified spectra of many thousands of stars; published catalogs of variable stars (including 300 she discovered) ...
However, the decaying orbits of a binary pulsar system discovered in 1974 by Russell Hulse and Joseph Taylor can only be explained by gravity waves carrying away energy from the pulsars as they orbit each other.
However, high precision measurements of motions in the solar system and in binary pulsars, the structure of black holes, and the expansion of the universe can only be fully understood in terms of a relativistic theory of gravitation.
A Dictionary of Astronomy entry for double pulsar
A Dictionary of Astronomy entry for Crab Pulsar
A Dictionary of Astronomy entry for Black Widow Pulsar
A Dictionary of Astronomy entry for binary pulsar ...
The observed decrease in the orbital period in the years since the discovery of the binary pulsar does indeed indicate that the two stars are spiraling toward one another at exactly the predicted rate.
1974 - Russell Hulse and Joseph Taylor discover the binary pulsar PSR1913+16,
1977 - Kip Thorne and Anna Zytkow present a detailed analysis of Thorne-Zytkow objects,
1982 - D.C. Backer, Shrinivas Kulkarni, Carl Heiles, M.M.
 See also: Pulsar, Astronomy, Orbit, Time, Gravitation
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