Matches in SemOpenAlex for { <https://semopenalex.org/work/W2951031008> ?p ?o ?g. }
Showing items 1 to 67 of
67
with 100 items per page.
- W2951031008 endingPage "542" @default.
- W2951031008 startingPage "542" @default.
- W2951031008 abstract "The idea that Fanaroff-Riley Class~I Radio Galaxies contain core jets with Lorentz factors of the order of a few and are the parent population for BL~Lac Objects is examined, with particular reference to the data on two FRI Radio Galaxies, NGC~315 and NGC~6251. Conservation laws for an entraining relativistic jet are derived and are used to determine a relationship between Mach number and velocity for initially relativistic jets. One immediate consequence of this relationship is that, if an initially relativistic jet is decelerated to a transonic Mach number between, say 0.5 and 1.5, then its velocity at this point is between 0.3 and 0.7 times the speed of light. Analysis of the milliarcsecond and arcsecond data on NGC~315 and NGC~6251 shows that the Lorentz factors of the core jets in these galaxies can be as high as 2-4 provided that the jet pressures are not much more than an order of magnitude higher than the minimum pressures. Such Lorentz factors are more plausible if the jets are inclined at $sim 30$ degrees to the line of sight, although larger angles would also be possible. For core Lorentz factors in the range 2-4, the jets are mildly relativistic on the large scale and their velocities are consistent with the jet brightness asymmetries being caused by Doppler beaming. The Lorentz factors required for significant beaming of core jets may be reconciled with subluminal motions of knots in the core if these are reverse shocks advected by the jet. Moderate jet Lorentz factors are possible if the shocks are normal and higher Lorentz factors are possible if the shocks are oblique. This paper provides support for the idea that the transition from two-sided to one-sided jets across the FRI/II break is due to the transition from" @default.
- W2951031008 created "2019-06-27" @default.
- W2951031008 creator A5053543617 @default.
- W2951031008 date "1994-02-01" @default.
- W2951031008 modified "2023-09-25" @default.
- W2951031008 title "On the relationship between BL Lacertae objects and Fanaroff-Riley I radio galaxies" @default.
- W2951031008 doi "https://doi.org/10.1086/173748" @default.
- W2951031008 hasPublicationYear "1994" @default.
- W2951031008 type Work @default.
- W2951031008 sameAs 2951031008 @default.
- W2951031008 citedByCount "162" @default.
- W2951031008 countsByYear W29510310082012 @default.
- W2951031008 countsByYear W29510310082013 @default.
- W2951031008 countsByYear W29510310082014 @default.
- W2951031008 countsByYear W29510310082015 @default.
- W2951031008 countsByYear W29510310082016 @default.
- W2951031008 countsByYear W29510310082017 @default.
- W2951031008 countsByYear W29510310082018 @default.
- W2951031008 countsByYear W29510310082019 @default.
- W2951031008 countsByYear W29510310082020 @default.
- W2951031008 countsByYear W29510310082021 @default.
- W2951031008 countsByYear W29510310082022 @default.
- W2951031008 countsByYear W29510310082023 @default.
- W2951031008 crossrefType "journal-article" @default.
- W2951031008 hasAuthorship W2951031008A5053543617 @default.
- W2951031008 hasBestOaLocation W29510310081 @default.
- W2951031008 hasConcept C100752510 @default.
- W2951031008 hasConcept C111717503 @default.
- W2951031008 hasConcept C121332964 @default.
- W2951031008 hasConcept C1276947 @default.
- W2951031008 hasConcept C135041427 @default.
- W2951031008 hasConcept C20249676 @default.
- W2951031008 hasConcept C43481613 @default.
- W2951031008 hasConcept C44870925 @default.
- W2951031008 hasConcept C7910260 @default.
- W2951031008 hasConcept C98444146 @default.
- W2951031008 hasConceptScore W2951031008C100752510 @default.
- W2951031008 hasConceptScore W2951031008C111717503 @default.
- W2951031008 hasConceptScore W2951031008C121332964 @default.
- W2951031008 hasConceptScore W2951031008C1276947 @default.
- W2951031008 hasConceptScore W2951031008C135041427 @default.
- W2951031008 hasConceptScore W2951031008C20249676 @default.
- W2951031008 hasConceptScore W2951031008C43481613 @default.
- W2951031008 hasConceptScore W2951031008C44870925 @default.
- W2951031008 hasConceptScore W2951031008C7910260 @default.
- W2951031008 hasConceptScore W2951031008C98444146 @default.
- W2951031008 hasLocation W29510310081 @default.
- W2951031008 hasLocation W29510310082 @default.
- W2951031008 hasOpenAccess W2951031008 @default.
- W2951031008 hasPrimaryLocation W29510310081 @default.
- W2951031008 hasRelatedWork W1494569960 @default.
- W2951031008 hasRelatedWork W2044756659 @default.
- W2951031008 hasRelatedWork W2146321325 @default.
- W2951031008 hasRelatedWork W2283369104 @default.
- W2951031008 hasRelatedWork W2564970708 @default.
- W2951031008 hasRelatedWork W3105142215 @default.
- W2951031008 hasRelatedWork W3105432030 @default.
- W2951031008 hasRelatedWork W3124186094 @default.
- W2951031008 hasRelatedWork W324161450 @default.
- W2951031008 hasRelatedWork W4205239477 @default.
- W2951031008 hasVolume "422" @default.
- W2951031008 isParatext "false" @default.
- W2951031008 isRetracted "false" @default.
- W2951031008 magId "2951031008" @default.
- W2951031008 workType "article" @default.