Matches in SemOpenAlex for { <https://semopenalex.org/work/W3105421766> ?p ?o ?g. }
Showing items 1 to 80 of
80
with 100 items per page.
- W3105421766 endingPage "856" @default.
- W3105421766 startingPage "852" @default.
- W3105421766 abstract "In this paper, we report the detection of a series of radio recombination lines (RRLs) in absorption near 26 MHz arising from the largest bound carbon atoms detected in space. These atoms, which are more than a million times larger than the ground-state atoms, are undergoing delta transitions (n∼ 1009, Δn= 4) in the cool tenuous medium located in the Perseus arm in front of the supernova remnant, Cassiopeia A (Cas A). Theoretical estimates had shown that atoms which recombined in tenuous media are stable up to quantum levels n∼ 1500. Our data indicate that we have detected radiation from atoms in states very close to this theoretical limit. We also report high signal-to-noise ratio detections of α, β and γ transitions in carbon atoms arising in the same clouds. In these data, we find that the increase in linewidths with quantum number (approximately proportional to n5) due to pressure and radiation broadening of lines is much gentler than that expected from existing models which assume a power-law background radiation field. This discrepancy had also been noted earlier. The model linewidths had been overestimated since the turnover in radiation field of Cas A at low frequencies had been ignored. In this paper, we show that, once the spectral turnover is included in the modelling, the slower increase in linewidth with quantum number is naturally explained." @default.
- W3105421766 created "2020-11-23" @default.
- W3105421766 creator A5001961708 @default.
- W3105421766 creator A5022672821 @default.
- W3105421766 creator A5059087448 @default.
- W3105421766 creator A5082494157 @default.
- W3105421766 date "2007-01-21" @default.
- W3105421766 modified "2023-09-30" @default.
- W3105421766 title "Radio recombination lines from the largest bound atoms in space" @default.
- W3105421766 cites W1963528130 @default.
- W3105421766 cites W1969156442 @default.
- W3105421766 cites W1977440267 @default.
- W3105421766 cites W1986344041 @default.
- W3105421766 cites W2016293874 @default.
- W3105421766 cites W2023340138 @default.
- W3105421766 cites W2035296944 @default.
- W3105421766 cites W2042298628 @default.
- W3105421766 cites W2134304689 @default.
- W3105421766 doi "https://doi.org/10.1111/j.1365-2966.2006.11190.x" @default.
- W3105421766 hasPublicationYear "2007" @default.
- W3105421766 type Work @default.
- W3105421766 sameAs 3105421766 @default.
- W3105421766 citedByCount "43" @default.
- W3105421766 countsByYear W31054217662012 @default.
- W3105421766 countsByYear W31054217662013 @default.
- W3105421766 countsByYear W31054217662014 @default.
- W3105421766 countsByYear W31054217662016 @default.
- W3105421766 countsByYear W31054217662017 @default.
- W3105421766 countsByYear W31054217662018 @default.
- W3105421766 countsByYear W31054217662019 @default.
- W3105421766 countsByYear W31054217662020 @default.
- W3105421766 countsByYear W31054217662021 @default.
- W3105421766 countsByYear W31054217662023 @default.
- W3105421766 crossrefType "journal-article" @default.
- W3105421766 hasAuthorship W3105421766A5001961708 @default.
- W3105421766 hasAuthorship W3105421766A5022672821 @default.
- W3105421766 hasAuthorship W3105421766A5059087448 @default.
- W3105421766 hasAuthorship W3105421766A5082494157 @default.
- W3105421766 hasBestOaLocation W31054217661 @default.
- W3105421766 hasConcept C121332964 @default.
- W3105421766 hasConcept C127592171 @default.
- W3105421766 hasConcept C153385146 @default.
- W3105421766 hasConcept C184779094 @default.
- W3105421766 hasConcept C2777634923 @default.
- W3105421766 hasConcept C2778339168 @default.
- W3105421766 hasConcept C44870925 @default.
- W3105421766 hasConcept C4839761 @default.
- W3105421766 hasConcept C62520636 @default.
- W3105421766 hasConceptScore W3105421766C121332964 @default.
- W3105421766 hasConceptScore W3105421766C127592171 @default.
- W3105421766 hasConceptScore W3105421766C153385146 @default.
- W3105421766 hasConceptScore W3105421766C184779094 @default.
- W3105421766 hasConceptScore W3105421766C2777634923 @default.
- W3105421766 hasConceptScore W3105421766C2778339168 @default.
- W3105421766 hasConceptScore W3105421766C44870925 @default.
- W3105421766 hasConceptScore W3105421766C4839761 @default.
- W3105421766 hasConceptScore W3105421766C62520636 @default.
- W3105421766 hasIssue "3" @default.
- W3105421766 hasLocation W31054217661 @default.
- W3105421766 hasLocation W31054217662 @default.
- W3105421766 hasLocation W31054217663 @default.
- W3105421766 hasOpenAccess W3105421766 @default.
- W3105421766 hasPrimaryLocation W31054217661 @default.
- W3105421766 hasRelatedWork W1964085928 @default.
- W3105421766 hasRelatedWork W2065635155 @default.
- W3105421766 hasRelatedWork W2083708369 @default.
- W3105421766 hasRelatedWork W2165889938 @default.
- W3105421766 hasRelatedWork W2562654972 @default.
- W3105421766 hasRelatedWork W3098239083 @default.
- W3105421766 hasRelatedWork W3102028762 @default.
- W3105421766 hasRelatedWork W3102729934 @default.
- W3105421766 hasRelatedWork W3123246318 @default.
- W3105421766 hasRelatedWork W3102736461 @default.
- W3105421766 hasVolume "374" @default.
- W3105421766 isParatext "false" @default.
- W3105421766 isRetracted "false" @default.
- W3105421766 magId "3105421766" @default.
- W3105421766 workType "article" @default.