About: Spin-flip     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : yago:YagoPermanentlyLocatedEntity, within Data Space : dbpedia.org associated with source document(s)
QRcode icon
http://dbpedia.org/describe/?url=http%3A%2F%2Fdbpedia.org%2Fresource%2FSpin-flip

A black hole spin-flip occurs when the spin axis of a rotating black hole undergoes a sudden change in orientation due to absorption of a second (smaller) black hole. Spin-flips are believed to be a consequence of galaxy mergers, when two supermassive black holes form a bound pair at the center of the merged galaxy and coalesce after emitting gravitational waves. Spin-flips are significant astrophysically since a number of physical processes are associated with black hole spins; for instance, jets in active galaxies are believed to be launched parallel to the spin axes of supermassive black holes.A change in the rotation axis of a black hole due to a spin-flip would therefore result in a change in the direction of the jet.

AttributesValues
rdf:type
rdfs:label
  • Spin-Flip (de)
  • Changement de rotation des trous noirs (fr)
  • Cambiamento di rotazione dei buchi neri (it)
  • Spin-flip (en)
rdfs:comment
  • In der Physik versteht man unter einem Spin-Flip die Neuausrichtung (insbesondere die Umkehrung) des Spins eines Teilchens, beispielsweise eines Elektrons. Von einem Spin-Flip im engeren Sinne spricht man allerdings nur, wenn dabei eine Energiebarriere überwunden werden muss. Dies ist z. B. bei einem Teilchen in einem Magnetfeld der Fall, weil dann in der Regel die Energie-Entartung der verschiedenen Spin-Zustände aufgehoben ist. Ist das Magnetfeld sehr stark, werden thermisch angeregte Spin-Flips vollständig unterdrückt. (de)
  • A black hole spin-flip occurs when the spin axis of a rotating black hole undergoes a sudden change in orientation due to absorption of a second (smaller) black hole. Spin-flips are believed to be a consequence of galaxy mergers, when two supermassive black holes form a bound pair at the center of the merged galaxy and coalesce after emitting gravitational waves. Spin-flips are significant astrophysically since a number of physical processes are associated with black hole spins; for instance, jets in active galaxies are believed to be launched parallel to the spin axes of supermassive black holes.A change in the rotation axis of a black hole due to a spin-flip would therefore result in a change in the direction of the jet. (en)
  • Le changement de rotation d'un trou noir (black hole spin-flip) survient lorsque l'axe de rotation d'un trou noir change soudainement d'orientation en raison de l'absorption d'un autre trou noir moins massif, par conservation du moment cinétique. Les changements d'axe de rotation des trous noirs influenceraient un certain nombre de processus astrophysiques, comme les jets relativistes liés aux galaxies actives. (fr)
  • Un cambiamento di rotazione avviene in un buco nero rotante quando il suo asse di spin cambia improvvisamente orientazione a causa dell'assorbimento di un secondo, più piccolo, buco nero. Si ritiene che questi cambiamenti di orientazione (in inglese chiamati "spin flips") siano la conseguenza di fusioni di galassie, quando due buchi neri supermassicci finiscono per formare una coppia legata situata al centro della galassia risultante dalla fusione e infine vanno incontro a una coalescenza subito dopo aver generato delle onde gravitazionali. (it)
foaf:depiction
  • http://commons.wikimedia.org/wiki/Special:FilePath/SpinFlip.jpg
dcterms:subject
Wikipage page ID
Wikipage revision ID
Link from a Wikipage to another Wikipage
Link from a Wikipage to an external page
sameAs
dbp:wikiPageUsesTemplate
thumbnail
has abstract
  • In der Physik versteht man unter einem Spin-Flip die Neuausrichtung (insbesondere die Umkehrung) des Spins eines Teilchens, beispielsweise eines Elektrons. Von einem Spin-Flip im engeren Sinne spricht man allerdings nur, wenn dabei eine Energiebarriere überwunden werden muss. Dies ist z. B. bei einem Teilchen in einem Magnetfeld der Fall, weil dann in der Regel die Energie-Entartung der verschiedenen Spin-Zustände aufgehoben ist. Ist das Magnetfeld sehr stark, werden thermisch angeregte Spin-Flips vollständig unterdrückt. (de)
  • Le changement de rotation d'un trou noir (black hole spin-flip) survient lorsque l'axe de rotation d'un trou noir change soudainement d'orientation en raison de l'absorption d'un autre trou noir moins massif, par conservation du moment cinétique. Ces changements d'axe de rotation seraient une conséquence de la fusion de galaxies, le trou noir supermassif au centre de chacune d'elles formant un trou noir binaire au centre de la galaxie résultante. Perdant de l'énergie par l'émission d'ondes gravitationnelles, le trou noir binaire finit par fusionner, ce qui amène le changement d'axe de rotation du plus massif d'entre eux alors que le moins massif est absorbé. Les changements d'axe de rotation des trous noirs influenceraient un certain nombre de processus astrophysiques, comme les jets relativistes liés aux galaxies actives. (fr)
  • A black hole spin-flip occurs when the spin axis of a rotating black hole undergoes a sudden change in orientation due to absorption of a second (smaller) black hole. Spin-flips are believed to be a consequence of galaxy mergers, when two supermassive black holes form a bound pair at the center of the merged galaxy and coalesce after emitting gravitational waves. Spin-flips are significant astrophysically since a number of physical processes are associated with black hole spins; for instance, jets in active galaxies are believed to be launched parallel to the spin axes of supermassive black holes.A change in the rotation axis of a black hole due to a spin-flip would therefore result in a change in the direction of the jet. (en)
  • Un cambiamento di rotazione avviene in un buco nero rotante quando il suo asse di spin cambia improvvisamente orientazione a causa dell'assorbimento di un secondo, più piccolo, buco nero. Si ritiene che questi cambiamenti di orientazione (in inglese chiamati "spin flips") siano la conseguenza di fusioni di galassie, quando due buchi neri supermassicci finiscono per formare una coppia legata situata al centro della galassia risultante dalla fusione e infine vanno incontro a una coalescenza subito dopo aver generato delle onde gravitazionali. L'importanza astrofisica dei cambiamenti di rotazione dei buchi neri è dovuta al fatto che allo spin di questi ultimi sono associati diversi processi fisici; ad esempio oggi si ritiene che i getti relativistici che emergono dal centro di alcune galassie attive siano emessi parallelamente all'asse di spin di buchi neri supermassicci, quindi un cambiamento nella rotazione di un buco nero risulterebbe in un cambio della direzione dei suddetti getti. (it)
prov:wasDerivedFrom
page length (characters) of wiki page
foaf:isPrimaryTopicOf
is Link from a Wikipage to another Wikipage of
is Wikipage redirect of
is foaf:primaryTopic of
Faceted Search & Find service v1.17_git139 as of Feb 29 2024


Alternative Linked Data Documents: ODE     Content Formats:   [cxml] [csv]     RDF   [text] [turtle] [ld+json] [rdf+json] [rdf+xml]     ODATA   [atom+xml] [odata+json]     Microdata   [microdata+json] [html]    About   
This material is Open Knowledge   W3C Semantic Web Technology [RDF Data] Valid XHTML + RDFa
OpenLink Virtuoso version 08.03.3330 as of Mar 19 2024, on Linux (x86_64-generic-linux-glibc212), Single-Server Edition (61 GB total memory, 40 GB memory in use)
Data on this page belongs to its respective rights holders.
Virtuoso Faceted Browser Copyright © 2009-2024 OpenLink Software