Matches in SemOpenAlex for { <https://semopenalex.org/work/W3100980057> ?p ?o ?g. }
Showing items 1 to 95 of
95
with 100 items per page.
- W3100980057 endingPage "L30" @default.
- W3100980057 startingPage "L27" @default.
- W3100980057 abstract "We report X-ray observations of the powerful radio galaxy Cygnus A with the Chandra X-Ray Observatory. This Letter focuses on the radio hot spots, all four of which are detected in X-rays with a very similar morphology to their radio structure. X-ray spectra have been obtained for the two brighter hot spots (A and D). Both are well described by a power law with photon index Γ = 1.8 ± 0.2 absorbed by the Galactic column in the direction of Cygnus A. Thermal X-ray models require too high gas densities and may be ruled out. The images and spectra strongly support synchrotron self-Compton models of the X-ray emission, as proposed by Harris, Carilli, & Perley on the basis of ROSAT imaging observations. Such models indicate that the magnetic field in each of the brighter hot spots is 1.5 × 10-4 G, with an uncertainty of a few tens of percent. This value is close to the equipartition field strengths assuming no protons are present. The possibility that the X-rays are synchrotron radiation is briefly discussed but not favored. We speculate that production of the γ ~ 107 electrons necessary for X-ray synchrotron radiation from hot spots is inhibited when the external gas density is high, as is the case when the radio galaxy is within a cooling flow." @default.
- W3100980057 created "2020-11-23" @default.
- W3100980057 creator A5013171176 @default.
- W3100980057 creator A5070295757 @default.
- W3100980057 creator A5080258227 @default.
- W3100980057 date "2000-11-20" @default.
- W3100980057 modified "2023-10-18" @default.
- W3100980057 title "[ITAL]Chandra[/ITAL] Observations of Cygnus A: Magnetic Field Strengths in the Hot Spots of a Radio Galaxy" @default.
- W3100980057 cites W1994311227 @default.
- W3100980057 cites W2010986898 @default.
- W3100980057 cites W2012685195 @default.
- W3100980057 cites W2020887585 @default.
- W3100980057 cites W2029864274 @default.
- W3100980057 cites W2037970068 @default.
- W3100980057 cites W2046682618 @default.
- W3100980057 cites W2056437624 @default.
- W3100980057 cites W2068817857 @default.
- W3100980057 cites W2071267585 @default.
- W3100980057 cites W2107069151 @default.
- W3100980057 cites W4232593527 @default.
- W3100980057 doi "https://doi.org/10.1086/317293" @default.
- W3100980057 hasPublicationYear "2000" @default.
- W3100980057 type Work @default.
- W3100980057 sameAs 3100980057 @default.
- W3100980057 citedByCount "135" @default.
- W3100980057 countsByYear W31009800572012 @default.
- W3100980057 countsByYear W31009800572013 @default.
- W3100980057 countsByYear W31009800572014 @default.
- W3100980057 countsByYear W31009800572015 @default.
- W3100980057 countsByYear W31009800572016 @default.
- W3100980057 countsByYear W31009800572017 @default.
- W3100980057 countsByYear W31009800572018 @default.
- W3100980057 countsByYear W31009800572019 @default.
- W3100980057 countsByYear W31009800572020 @default.
- W3100980057 countsByYear W31009800572022 @default.
- W3100980057 countsByYear W31009800572023 @default.
- W3100980057 crossrefType "journal-article" @default.
- W3100980057 hasAuthorship W3100980057A5013171176 @default.
- W3100980057 hasAuthorship W3100980057A5070295757 @default.
- W3100980057 hasAuthorship W3100980057A5080258227 @default.
- W3100980057 hasBestOaLocation W31009800572 @default.
- W3100980057 hasConcept C120665830 @default.
- W3100980057 hasConcept C121332964 @default.
- W3100980057 hasConcept C12241035 @default.
- W3100980057 hasConcept C1276947 @default.
- W3100980057 hasConcept C132552067 @default.
- W3100980057 hasConcept C159317903 @default.
- W3100980057 hasConcept C16332341 @default.
- W3100980057 hasConcept C20249676 @default.
- W3100980057 hasConcept C21368211 @default.
- W3100980057 hasConcept C2779919027 @default.
- W3100980057 hasConcept C43481613 @default.
- W3100980057 hasConcept C44870925 @default.
- W3100980057 hasConcept C4839761 @default.
- W3100980057 hasConcept C75776270 @default.
- W3100980057 hasConcept C81302155 @default.
- W3100980057 hasConcept C98444146 @default.
- W3100980057 hasConceptScore W3100980057C120665830 @default.
- W3100980057 hasConceptScore W3100980057C121332964 @default.
- W3100980057 hasConceptScore W3100980057C12241035 @default.
- W3100980057 hasConceptScore W3100980057C1276947 @default.
- W3100980057 hasConceptScore W3100980057C132552067 @default.
- W3100980057 hasConceptScore W3100980057C159317903 @default.
- W3100980057 hasConceptScore W3100980057C16332341 @default.
- W3100980057 hasConceptScore W3100980057C20249676 @default.
- W3100980057 hasConceptScore W3100980057C21368211 @default.
- W3100980057 hasConceptScore W3100980057C2779919027 @default.
- W3100980057 hasConceptScore W3100980057C43481613 @default.
- W3100980057 hasConceptScore W3100980057C44870925 @default.
- W3100980057 hasConceptScore W3100980057C4839761 @default.
- W3100980057 hasConceptScore W3100980057C75776270 @default.
- W3100980057 hasConceptScore W3100980057C81302155 @default.
- W3100980057 hasConceptScore W3100980057C98444146 @default.
- W3100980057 hasIssue "1" @default.
- W3100980057 hasLocation W31009800571 @default.
- W3100980057 hasLocation W31009800572 @default.
- W3100980057 hasOpenAccess W3100980057 @default.
- W3100980057 hasPrimaryLocation W31009800571 @default.
- W3100980057 hasRelatedWork W1988291978 @default.
- W3100980057 hasRelatedWork W1999212794 @default.
- W3100980057 hasRelatedWork W2002418785 @default.
- W3100980057 hasRelatedWork W2037983614 @default.
- W3100980057 hasRelatedWork W2080425724 @default.
- W3100980057 hasRelatedWork W2294838699 @default.
- W3100980057 hasRelatedWork W2963224493 @default.
- W3100980057 hasRelatedWork W3104271228 @default.
- W3100980057 hasRelatedWork W3137183839 @default.
- W3100980057 hasRelatedWork W4376272447 @default.
- W3100980057 hasVolume "544" @default.
- W3100980057 isParatext "false" @default.
- W3100980057 isRetracted "false" @default.
- W3100980057 magId "3100980057" @default.
- W3100980057 workType "article" @default.