Radio-quiet neutron star

Radio-quiet neutron star

A radio-quiet neutron star is a neutron star that does not seem to emit radio emissions like most other neutron stars.

Most neutron stars are pulsars, and emit radio radiation.

Quark stars, theoretical neutron star-like objects composed of quark matter, may be radio quiet, according to some theories.

More plausibly however, radio-quiet neutron stars may simply be pulsars which do not pulse in our direction. As pulsars spin, they emit radiation from their magnetic poles. When the magnetic poles do not lie on the axis of rotation, and cross the line of sight of the observer, one can detect radio emission emitted near the star's magnetic poles. Due to the star's rotation this radiation appears to pulse, colloquially called the "lighthouse effect".

List of radio-quiet neutron stars

* 1E 1207.4-5209
* RX J185635-3754
* RX J0822-4300 in Puppis A supernova remnant
* RX J0720.4-3125
* neutron star in PKS 1209-51/52 supernova remnant
* Geminga


Wikimedia Foundation. 2010.

Игры ⚽ Поможем решить контрольную работу

Look at other dictionaries:

  • Neutron star — redirects here. For the story by Larry Niven, see Neutron Star (short story). Neutron stars crush half a million times more mass than Earth into a sphere no larger than Manhattan. A neutron star is a type of stellar remnant that can result from… …   Wikipedia

  • Quark star — A quark star or strange star is a hypothetical type of exotic star composed of quark matter, or strange matter. These are ultra dense phases of degenerate matter theorized to form inside particularly massive neutron stars. It is theorized that… …   Wikipedia

  • Compact star — In astronomy, the term compact star (sometimes compact object) is used to refer collectively to white dwarfs, neutron stars, other exotic dense stars, and black holes. These objects are all small for their mass. The term compact star is often… …   Wikipedia

  • List of Star Trek novels — This is a list of the various Star Trek novels, novelisations, and short story collections that have been published since 1968. Through this time, three main companies have published Star Trek fiction: Bantam Books (from 1967 to 1981), Ballantine …   Wikipedia

  • RX J0822-4300 — motion of the neutron star RX J0822 4300 from the Puppis A supernova event …   Wikipedia

  • CTA 46 — Puppis A Puppis A Données d observation Époque J2000.0 Ascension droite 08h 24m 07s Déclinaison 42° 59.8′ Coordonnées galactiques ℓ=260,601, b= 03,144 Co …   Wikipédia en Français

  • Pup A — Puppis A Puppis A Données d observation Époque J2000.0 Ascension droite 08h 24m 07s Déclinaison 42° 59.8′ Coordonnées galactiques ℓ=260,601, b= 03,144 Co …   Wikipédia en Français

  • Puppis A — Données d observation Époque J2000.0 Ascension droite 08h 24m 07s Déclinaison 42° 59.8′ Coordonnées galactiques ℓ=260,601, b= 0 …   Wikipédia en Français

  • SNR 260.4-03.4 — Puppis A Puppis A Données d observation Époque J2000.0 Ascension droite 08h 24m 07s Déclinaison 42° 59.8′ Coordonnées galactiques ℓ=260,601, b= 03,144 Co …   Wikipédia en Français

  • SNR 260.4-3.4 — Puppis A Puppis A Données d observation Époque J2000.0 Ascension droite 08h 24m 07s Déclinaison 42° 59.8′ Coordonnées galactiques ℓ=260,601, b= 03,144 Co …   Wikipédia en Français

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”