Matches in SemOpenAlex for { <https://semopenalex.org/work/W1598249334> ?p ?o ?g. }
Showing items 1 to 71 of
71
with 100 items per page.
- W1598249334 abstract "Navarro, Frenk, & White have recently found numerically that the density profile of dark-matter halos can be described by a universal two-parameter function over a broad range of halo masses. The profile is singular, approaching the halo center with $rhopropto r^{-1}$. It had been argued previously that radially distorted, gravitationally lensed images of background sources in galaxy clusters, so-called radial arcs, required a flat core in the cluster density profile. Such radial arcs have so far been detected in two galaxy clusters, in apparent contradiction with a singular density profile. I show here that the profile suggested by Navarro et al. can produce radial arcs despite its central singularity, and describe how the two parameters of the profile can be determined in clusters where radial and tangential arcs are observed. I then apply this analysis to the two clusters where radial arcs were detected. In both cases, the redshifts of the radial arcs are yet unknown, hence definitive conclusions on the profile parameters cannot yet be drawn. Numerically determined values for the parameters of cluster-sized halos can, however, be used to predict the range of the unknown arc redshifts, thus providing a direct observational test for the proposed density profile. A potential difficulty with the profile is that the radial magnification of tangential arcs is large, hence tangential arcs should be thick or their sources should be very thin in the radial direction." @default.
- W1598249334 created "2016-06-24" @default.
- W1598249334 creator A5051244430 @default.
- W1598249334 date "1996-02-12" @default.
- W1598249334 modified "2023-09-27" @default.
- W1598249334 title "Arcs from a Universal Dark-Matter Halo Profile" @default.
- W1598249334 hasPublicationYear "1996" @default.
- W1598249334 type Work @default.
- W1598249334 sameAs 1598249334 @default.
- W1598249334 citedByCount "3" @default.
- W1598249334 countsByYear W15982493342012 @default.
- W1598249334 countsByYear W15982493342014 @default.
- W1598249334 crossrefType "posted-content" @default.
- W1598249334 hasAuthorship W1598249334A5051244430 @default.
- W1598249334 hasConcept C121332964 @default.
- W1598249334 hasConcept C150846664 @default.
- W1598249334 hasConcept C159249277 @default.
- W1598249334 hasConcept C159985019 @default.
- W1598249334 hasConcept C164866538 @default.
- W1598249334 hasConcept C184665706 @default.
- W1598249334 hasConcept C192562407 @default.
- W1598249334 hasConcept C199360897 @default.
- W1598249334 hasConcept C204323151 @default.
- W1598249334 hasConcept C33024259 @default.
- W1598249334 hasConcept C41008148 @default.
- W1598249334 hasConcept C41074950 @default.
- W1598249334 hasConcept C44870925 @default.
- W1598249334 hasConcept C88148261 @default.
- W1598249334 hasConcept C98444146 @default.
- W1598249334 hasConceptScore W1598249334C121332964 @default.
- W1598249334 hasConceptScore W1598249334C150846664 @default.
- W1598249334 hasConceptScore W1598249334C159249277 @default.
- W1598249334 hasConceptScore W1598249334C159985019 @default.
- W1598249334 hasConceptScore W1598249334C164866538 @default.
- W1598249334 hasConceptScore W1598249334C184665706 @default.
- W1598249334 hasConceptScore W1598249334C192562407 @default.
- W1598249334 hasConceptScore W1598249334C199360897 @default.
- W1598249334 hasConceptScore W1598249334C204323151 @default.
- W1598249334 hasConceptScore W1598249334C33024259 @default.
- W1598249334 hasConceptScore W1598249334C41008148 @default.
- W1598249334 hasConceptScore W1598249334C41074950 @default.
- W1598249334 hasConceptScore W1598249334C44870925 @default.
- W1598249334 hasConceptScore W1598249334C88148261 @default.
- W1598249334 hasConceptScore W1598249334C98444146 @default.
- W1598249334 hasLocation W15982493341 @default.
- W1598249334 hasOpenAccess W1598249334 @default.
- W1598249334 hasPrimaryLocation W15982493341 @default.
- W1598249334 hasRelatedWork W1514058456 @default.
- W1598249334 hasRelatedWork W1627952430 @default.
- W1598249334 hasRelatedWork W1959625325 @default.
- W1598249334 hasRelatedWork W1977479591 @default.
- W1598249334 hasRelatedWork W1984445138 @default.
- W1598249334 hasRelatedWork W2017754625 @default.
- W1598249334 hasRelatedWork W2028471748 @default.
- W1598249334 hasRelatedWork W2075505537 @default.
- W1598249334 hasRelatedWork W2122592783 @default.
- W1598249334 hasRelatedWork W2132459017 @default.
- W1598249334 hasRelatedWork W2170846549 @default.
- W1598249334 hasRelatedWork W2750145658 @default.
- W1598249334 hasRelatedWork W2963331341 @default.
- W1598249334 hasRelatedWork W3005282026 @default.
- W1598249334 hasRelatedWork W3100376143 @default.
- W1598249334 hasRelatedWork W3102235645 @default.
- W1598249334 hasRelatedWork W3103877238 @default.
- W1598249334 hasRelatedWork W3103983804 @default.
- W1598249334 hasRelatedWork W3122576044 @default.
- W1598249334 hasRelatedWork W3123160871 @default.
- W1598249334 isParatext "false" @default.
- W1598249334 isRetracted "false" @default.
- W1598249334 magId "1598249334" @default.
- W1598249334 workType "article" @default.