Matches in SemOpenAlex for { <https://semopenalex.org/work/W4294635521> ?p ?o ?g. }
Showing items 1 to 59 of
59
with 100 items per page.
- W4294635521 abstract "We present the results from recent VLA 8.5-GHz and WSRT 1.4 and 4.9-GHz monitoring campaigns of the CLASS gravitational lens B1600+434 and show how the observed variations argue strongly in favor of microlensing by MACHOs in the halo of a dark-matter dominated edge-on disk galaxy at z=0.4. The population of flat-spectrum radio sources with micro-Jy flux-densities detected with the Square-Kilometer-Array is expected to have dimensions of micro-arcsec. They will therefore vary rapidly as a result of Galactic scintillation (diffractive and refractive). However, when positioned behind distant galaxies they will also show variations due to microlensing, even more strongly than in the case of B1600+434. Relativistic or superluminal motion in these background sources typically leads to temporal variations on time scales of days to weeks. Scintillation and microlensing can be distinguished, and separated, by their different characteristic time scales and the frequency dependence of their modulations. Monitoring studies with Square-Kilometer-Array at GHz frequencies will thus probe both microscopic and macroscopic properties of dark matter and its mass-function as a function of redshift, information very hard to obtain by any other method." @default.
- W4294635521 created "2022-09-05" @default.
- W4294635521 creator A5039626103 @default.
- W4294635521 creator A5050549040 @default.
- W4294635521 date "2000-01-07" @default.
- W4294635521 modified "2023-09-25" @default.
- W4294635521 title "Micro & strong lensing with the Square Kilometer Array: The mass--function of compact objects in high--redshift galaxies" @default.
- W4294635521 doi "https://doi.org/10.48550/arxiv.astro-ph/0001108" @default.
- W4294635521 hasPublicationYear "2000" @default.
- W4294635521 type Work @default.
- W4294635521 citedByCount "0" @default.
- W4294635521 crossrefType "posted-content" @default.
- W4294635521 hasAuthorship W4294635521A5039626103 @default.
- W4294635521 hasAuthorship W4294635521A5050549040 @default.
- W4294635521 hasBestOaLocation W42946355211 @default.
- W4294635521 hasConcept C121332964 @default.
- W4294635521 hasConcept C125125069 @default.
- W4294635521 hasConcept C1276947 @default.
- W4294635521 hasConcept C135041427 @default.
- W4294635521 hasConcept C144024400 @default.
- W4294635521 hasConcept C149923435 @default.
- W4294635521 hasConcept C159249277 @default.
- W4294635521 hasConcept C184665706 @default.
- W4294635521 hasConcept C190670322 @default.
- W4294635521 hasConcept C2908647359 @default.
- W4294635521 hasConcept C33024259 @default.
- W4294635521 hasConcept C44870925 @default.
- W4294635521 hasConcept C68498078 @default.
- W4294635521 hasConcept C98444146 @default.
- W4294635521 hasConceptScore W4294635521C121332964 @default.
- W4294635521 hasConceptScore W4294635521C125125069 @default.
- W4294635521 hasConceptScore W4294635521C1276947 @default.
- W4294635521 hasConceptScore W4294635521C135041427 @default.
- W4294635521 hasConceptScore W4294635521C144024400 @default.
- W4294635521 hasConceptScore W4294635521C149923435 @default.
- W4294635521 hasConceptScore W4294635521C159249277 @default.
- W4294635521 hasConceptScore W4294635521C184665706 @default.
- W4294635521 hasConceptScore W4294635521C190670322 @default.
- W4294635521 hasConceptScore W4294635521C2908647359 @default.
- W4294635521 hasConceptScore W4294635521C33024259 @default.
- W4294635521 hasConceptScore W4294635521C44870925 @default.
- W4294635521 hasConceptScore W4294635521C68498078 @default.
- W4294635521 hasConceptScore W4294635521C98444146 @default.
- W4294635521 hasLocation W42946355211 @default.
- W4294635521 hasOpenAccess W4294635521 @default.
- W4294635521 hasPrimaryLocation W42946355211 @default.
- W4294635521 hasRelatedWork W1682729651 @default.
- W4294635521 hasRelatedWork W1993238770 @default.
- W4294635521 hasRelatedWork W2114865092 @default.
- W4294635521 hasRelatedWork W2197714679 @default.
- W4294635521 hasRelatedWork W2579093665 @default.
- W4294635521 hasRelatedWork W2593844102 @default.
- W4294635521 hasRelatedWork W2950921693 @default.
- W4294635521 hasRelatedWork W2952395012 @default.
- W4294635521 hasRelatedWork W3102762342 @default.
- W4294635521 hasRelatedWork W3098158984 @default.
- W4294635521 isParatext "false" @default.
- W4294635521 isRetracted "false" @default.
- W4294635521 workType "article" @default.