what is the difference between a Pulsar and a Quasar?

i posed my dad the same good question while watching the science channel, i was wondering the samething. so what is the difference between a Pulsar and a Quasar? i'm really wanting to know.

7 Answers

  • Anonymous
    1 decade ago
    Favorite Answer

    A pulsar is the remnant of a star which is spinning at a fantastic rate. They are neutron stars so are incredibly dense. Some rotate on their axis many times a second. They are so stable they can be used as celestial timers.

    Quasars are thought to be galaxies seen in the remote past. The further you look physically, the further back in time you see. Quasars are enormously powerful which is partly why they can be seen so far away. They are thought to be young galaxies with absolutely massive black holes at their centres.

    Although about 50000-100,000 quasars are known, all are far away - some of the most distant objects we can see.

    Although you didn't ask, you should feel sorry for an Irish astronmer called Jocelyn Bell (before she married). She actually discovered pulsars. With her senior scientist she cowrote the paper which was submitted for publication. It was really big news back then and Anthony Hewish, her senior scientist won the Nobel prize for their disovery and explanation (and quite rightly so). Jocelyn Bell, although named second on the paper was overlooked. Instead, a toff - a member of the old boys club was coawarded the Nobel prize for something to do with radar astronomy. It is one of the really well known injustices of scientists by the Nobel committee. It was very controversial at the time.

  • Anonymous
    4 years ago

    Pulsars And Quasars

  • 1 decade ago

    A pulsar is believed to be a spinning neutron star. Almost all known pulsars are found within our own galaxy (they're not active enough to easily detect in other galaxies). I believe the most distant pulsars known are in the Small and Large Megallanic Clouds, which are satellite galaxies of our own Milky Way.

    A quasar is believed to be the heart of a very young, very active galaxy. Quasars are the brightest objects that we know of in the universe and we see them as far away as 10 billion light years. All quasars are very far from our galaxy.

  • 5 years ago

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    A quasi-stellar radio source ("quasar") is a very energetic and distant active galactic nucleus. Quasars are among the most luminous objects in the universe. Quasars were first identified as being high redshift sources of electromagnetic energy, including radio waves and visible light, that were point-like, similar to stars, rather than extended sources similar to galaxies. A blazar (blazing quasi-stellar object) is a very compact quasar (quasi-stellar object) associated with a presumed supermassive black hole at the center of an active, giant elliptical galaxy. Blazars are among the most energetic phenomena in the universe and are an important topic in extragalactic astronomy.Blazars are members of a larger group of active galaxies, also termed active galactic nuclei (AGN). A few rare objects may be "intermediate blazars" that appear to have a mixture of properties from both OVV quasars and BL Lac objects. The name "blazar" was originally coined in 1978 by astronomer Edward Spiegel to denote the combination of these two classes. Pulsars are highly magnetized, rotating neutron stars that emit a beam of electromagnetic radiation. The radiation can only be observed when the beam of emission is pointing towards the Earth. This is called the lighthouse effect and gives rise to the pulsed nature that gives pulsars their name. Because neutron stars are very dense objects, the rotation period and thus the interval between observed pulses is very regular. For some pulsars, the regularity of pulsation is as precise as an atomic clock. The observed periods of their pulses range from 1.4 milliseconds to 8.5 seconds. A few pulsars are known to have planets orbiting them, such as PSR B1257+12. Werner Becker of the Max Planck Institute for Extraterrestrial Physics said in 2006, "The theory of how pulsars emit their radiation is still in its infancy, even after nearly forty years of work."

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  • Anonymous
    5 years ago

    Pulsars are highly magnetized rotating neutron stars and emit electromagnetic radiation in the form of radio waves. Quasars are powerful and distant active galactic necleus, they have sources of radio waves and visable light as well. A blazar is a very compact and highly variable energy source associated with a supermassive black holes. Basically, Pulsars = Neutron Stars Quasars = Galactic Center [where the black hole is] Blazar =Quasars they are just looked at from a different angles as i see it..

  • Anonymous
    8 years ago

    Quasars are active feeding black holes with enormous appetites for the serounding gass.You cant see a black hole and these are ther ones with out a quasar.

    Pulsars are really dense neutron stars with gyrating axes and the only similarity is that it pulls in gas.

  • A Pulsar is a small car produced by Nissan. A quasar is a duck with teeth found in Tasmania.

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