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- Relativistic_beaming abstract "Relativistic beaming (also known as Doppler beaming, Doppler boosting, or the headlight effect) is the process by which relativistic effects modify the apparent luminosity of emitting matter that is moving at speeds close to the speed of light. In an astronomical context, relativistic beaming commonly occurs in two oppositely-directed relativistic jets of plasma that originate from a central compact object that is accreting matter. Accreting compact objects and relativistic jets are invoked to explain the following observed phenomena: x-ray binaries, gamma-ray bursts, and, on a much larger scale, active galactic nuclei (AGN). (Quasars are also associated with an accreting compact object, but are thought to be merely a particular variety of AGN.)Beaming (short for relativistic beaming) affects the apparent brightness of a moving object just as a lighthouse affects the appearance of its light source: the light source appears dim or unseen to a ship except when the lighthouse is directed towards a ship where it appears very bright. This so-called lighthouse effect illustrates how important the direction of motion (relative to the observer) is in relativistic beaming: if a blob of gas emitting electromagnetic radiation is moving towards the observer then it will be brighter than if it were at rest, but if the gas isn't moving towards the observer it may (in some cases) appear much fainter than if it were at rest. The importance of this effect in astronomy is illustrated by comparing the AGN jets detected in the galaxy M87 and 3C31 (see figures on the right). The twin jets in M87 show how beaming affects their appearance when one jet moves almost directly towards Earth and the other jet moves in the opposite direction. On one hand, M87's jet moving towards Earth is clearly visible to telescopes (the long and thin blue-ish feature in the top image) and is many times brighter due to beaming. On the other hand, M87's other jet is moving away from us and is, due to beaming, so much fainter than the jet directed towards us that it is rendered invisible. 3C31 is different from M87 because both jets (labeled in the figure directly below M87's image) are directed at roughly right angles to our line of sight and are therefore subject to the same amount of beaming. Thus, unlike the case of M87, both of 3C31's jets are visible. The jet displayed on the upper part of the image of 3C31 is actually pointing slightly more in Earth's direction than the other jet and is therefore the brighter of the two.Relativistically moving objects are beamed due to a variety of physical effects. Light aberration causes most of the photons to be emitted along the object's direction of motion. The Doppler effect changes the energy of the photons by red- or blue-shifting them. Finally, time intervals as measured by clocks moving alongside the emitting object are different from those measured by an observer on Earth due to time dilation and photon arrival time effects. How all of these effects modify the brightness, or apparent luminosity, of a moving object is determined by the equation describing the relativistic Doppler effect (which is why relativistic beaming is also known as Doppler beaming).".
- Relativistic_beaming thumbnail M87_jet.jpg?width=300.
- Relativistic_beaming wikiPageExternalLink aberration.html.
- Relativistic_beaming wikiPageID "1097849".
- Relativistic_beaming wikiPageLength "13027".
- Relativistic_beaming wikiPageOutDegree "46".
- Relativistic_beaming wikiPageRevisionID "661116481".
- Relativistic_beaming wikiPageWikiLink Aberration_of_light.
- Relativistic_beaming wikiPageWikiLink Accretion_disc.
- Relativistic_beaming wikiPageWikiLink Active_galactic_nucleus.
- Relativistic_beaming wikiPageWikiLink Astrophysical_jet.
- Relativistic_beaming wikiPageWikiLink Category:Astrophysics.
- Relativistic_beaming wikiPageWikiLink Compact_star.
- Relativistic_beaming wikiPageWikiLink Electromagnetic_spectrum.
- Relativistic_beaming wikiPageWikiLink File:AGN_Jet_Aberration.png.
- Relativistic_beaming wikiPageWikiLink File:AGN_Jet_Blueshift.png.
- Relativistic_beaming wikiPageWikiLink File:AGN_Jet_Dilation.png.
- Relativistic_beaming wikiPageWikiLink File:AGN_Jet_Simple-Sphere-Model.png.
- Relativistic_beaming wikiPageWikiLink File:AGN_Jet_Synchro-Spectrum.png.
- Relativistic_beaming wikiPageWikiLink File:Radio_galaxy_3C31.png.
- Relativistic_beaming wikiPageWikiLink Gamma-ray_burst.
- Relativistic_beaming wikiPageWikiLink Light-time_correction.
- Relativistic_beaming wikiPageWikiLink Light_time_correction.
- Relativistic_beaming wikiPageWikiLink List_of_plasma_(physics)_articles.
- Relativistic_beaming wikiPageWikiLink Luminosity.
- Relativistic_beaming wikiPageWikiLink Messier_87.
- Relativistic_beaming wikiPageWikiLink Plasma_(physics).
- Relativistic_beaming wikiPageWikiLink Quasar.
- Relativistic_beaming wikiPageWikiLink Relativistic_Doppler_effect.
- Relativistic_beaming wikiPageWikiLink Relativistic_aberration.
- Relativistic_beaming wikiPageWikiLink Relativistic_jet.
- Relativistic_beaming wikiPageWikiLink Relativistic_particle.
- Relativistic_beaming wikiPageWikiLink Relativistic_plasma.
- Relativistic_beaming wikiPageWikiLink Relativistic_similarity_parameter.
- Relativistic_beaming wikiPageWikiLink Relativistic_wave_equations.
- Relativistic_beaming wikiPageWikiLink Special_Relativity.
- Relativistic_beaming wikiPageWikiLink Special_relativity.
- Relativistic_beaming wikiPageWikiLink Speed_of_light.
- Relativistic_beaming wikiPageWikiLink Supermassive_black_hole.
- Relativistic_beaming wikiPageWikiLink Synchrotron_emission.
- Relativistic_beaming wikiPageWikiLink Synchrotron_radiation.
- Relativistic_beaming wikiPageWikiLink Time_dilation.
- Relativistic_beaming wikiPageWikiLink X-ray_binary.
- Relativistic_beaming wikiPageWikiLink File:M87_jet.jpg.
- Relativistic_beaming wikiPageWikiLinkText "Relativistic beaming".
- Relativistic_beaming wikiPageWikiLinkText "Relativistic beaming#Mathematical Expressions".
- Relativistic_beaming wikiPageWikiLinkText "beam".
- Relativistic_beaming wikiPageWikiLinkText "beaming effect".
- Relativistic_beaming wikiPageWikiLinkText "beaming".
- Relativistic_beaming wikiPageWikiLinkText "doppler beaming".
- Relativistic_beaming wikiPageWikiLinkText "doppler factor".
- Relativistic_beaming wikiPageWikiLinkText "enhancing".
- Relativistic_beaming wikiPageWikiLinkText "relativistic beaming".
- Relativistic_beaming hasPhotoCollection Relativistic_beaming.
- Relativistic_beaming wikiPageUsesTemplate Template:Redirect.
- Relativistic_beaming wikiPageUsesTemplate Template:Refimprove.
- Relativistic_beaming wikiPageUsesTemplate Template:Reflist.
- Relativistic_beaming subject Category:Astrophysics.
- Relativistic_beaming hypernym Process.
- Relativistic_beaming type Article.
- Relativistic_beaming type Election.
- Relativistic_beaming type Article.
- Relativistic_beaming type Astrophysic.
- Relativistic_beaming type Sub-discipline.
- Relativistic_beaming comment "Relativistic beaming (also known as Doppler beaming, Doppler boosting, or the headlight effect) is the process by which relativistic effects modify the apparent luminosity of emitting matter that is moving at speeds close to the speed of light. In an astronomical context, relativistic beaming commonly occurs in two oppositely-directed relativistic jets of plasma that originate from a central compact object that is accreting matter.".
- Relativistic_beaming label "Relativistic beaming".
- Relativistic_beaming sameAs Relativistisches_Beaming.
- Relativistic_beaming sameAs 상대론적_분사출.
- Relativistic_beaming sameAs m.045tcq.
- Relativistic_beaming sameAs Relativistik_Işıma.
- Relativistic_beaming sameAs Q1705752.
- Relativistic_beaming sameAs Q1705752.
- Relativistic_beaming wasDerivedFrom Relativistic_beaming?oldid=661116481.
- Relativistic_beaming depiction M87_jet.jpg.
- Relativistic_beaming isPrimaryTopicOf Relativistic_beaming.