FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2023142223> ?p ?o ?g. }

• W2023142223 endingPage "274" @default.
• W2023142223 startingPage "266" @default.
• W2023142223 abstract "We report optical spectroscopy and imaging of Tycho's supernova remnant (SNR) which suggest that two different precursors are associated with the blast wave. In long-slit spectra of the eastern rim, we find diffuse Hα emission extending ≳1' ahead of Knot g, a bright nonradiative shock propagating at velocity ~2000 km s-1. In addition to the hydrogen lines, the diffuse spectrum also exhibits [S II] λλ6716, 6731; [N II] λ6583; and weak [O III] λ5007 emission. Narrowband imagery of Tycho's SNR shows that the diffuse emission extends ahead of most of the Balmer-dominated optical filaments and drops sharply in the remnant interior, suggesting that the diffuse gas is overrun by the supernova shock. The line ratios of the diffuse gas are compared with predictions from a simple He II λ304 photoionization precursor model. The models predict that the radiative transfer of He II λ304 photons in the precursor produces spatially distinct ionization layers of H0, He0-He+, N0-N++, O0-O++, and S+-S+3 ahead of the shock. The models suggest that the diffuse emission arises from collisional excitation in mostly neutral gas which has been heated to a temperature ~12,000 K. In high-resolution echelle spectra of Knot g, we find that the narrow Hα component is broadened to 44 ± 4 km s-1, suggesting that the upstream gas may be further heated before it crosses the shock, perhaps by a fast neutral or cosmic-ray precursor. High-resolution spectroscopy of the Hα line in both the diffuse region and Knot g will be required to definitively establish the existence of a second precursor." @default.
• W2023142223 created "2016-06-24" @default.
• W2023142223 creator A5012410233 @default.
• W2023142223 creator A5018953434 @default.
• W2023142223 creator A5028577063 @default.
• W2023142223 creator A5067831761 @default.
• W2023142223 date "2000-05-20" @default.
• W2023142223 modified "2023-10-17" @default.
• W2023142223 title "Evidence for Shock Precursors in Tycho’s Supernova Remnant" @default.
• W2023142223 cites W1539083501 @default.
• W2023142223 cites W1963823014 @default.
• W2023142223 cites W1969122018 @default.
• W2023142223 cites W1971706846 @default.
• W2023142223 cites W1973196718 @default.
• W2023142223 cites W1973910409 @default.
• W2023142223 cites W1976660838 @default.
• W2023142223 cites W1979005581 @default.
• W2023142223 cites W1983363983 @default.
• W2023142223 cites W1985321813 @default.
• W2023142223 cites W1991750356 @default.
• W2023142223 cites W1998057888 @default.
• W2023142223 cites W1999203878 @default.
• W2023142223 cites W2002447003 @default.
• W2023142223 cites W2005266990 @default.
• W2023142223 cites W2007446003 @default.
• W2023142223 cites W2013790803 @default.
• W2023142223 cites W2014463822 @default.
• W2023142223 cites W2026558518 @default.
• W2023142223 cites W2027400180 @default.
• W2023142223 cites W2033804825 @default.
• W2023142223 cites W2038131105 @default.
• W2023142223 cites W2048080965 @default.
• W2023142223 cites W2050996999 @default.
• W2023142223 cites W2062505606 @default.
• W2023142223 cites W2063712348 @default.
• W2023142223 cites W2068032684 @default.
• W2023142223 cites W2083003474 @default.
• W2023142223 cites W2143192129 @default.
• W2023142223 cites W2404680385 @default.
• W2023142223 cites W4244818491 @default.
• W2023142223 doi "https://doi.org/10.1086/308811" @default.
• W2023142223 hasPublicationYear "2000" @default.
• W2023142223 type Work @default.
• W2023142223 sameAs 2023142223 @default.
• W2023142223 citedByCount "75" @default.
• W2023142223 countsByYear W20231422232012 @default.
• W2023142223 countsByYear W20231422232013 @default.
• W2023142223 countsByYear W20231422232014 @default.
• W2023142223 countsByYear W20231422232015 @default.
• W2023142223 countsByYear W20231422232016 @default.
• W2023142223 countsByYear W20231422232017 @default.
• W2023142223 countsByYear W20231422232018 @default.
• W2023142223 countsByYear W20231422232019 @default.
• W2023142223 countsByYear W20231422232020 @default.
• W2023142223 countsByYear W20231422232021 @default.
• W2023142223 countsByYear W20231422232022 @default.
• W2023142223 countsByYear W20231422232023 @default.
• W2023142223 crossrefType "journal-article" @default.
• W2023142223 hasAuthorship W2023142223A5012410233 @default.
• W2023142223 hasAuthorship W2023142223A5018953434 @default.
• W2023142223 hasAuthorship W2023142223A5028577063 @default.
• W2023142223 hasAuthorship W2023142223A5067831761 @default.
• W2023142223 hasBestOaLocation W20231422231 @default.
• W2023142223 hasConcept C120665830 @default.
• W2023142223 hasConcept C121332964 @default.
• W2023142223 hasConcept C127413603 @default.
• W2023142223 hasConcept C127592171 @default.
• W2023142223 hasConcept C1276947 @default.
• W2023142223 hasConcept C145148216 @default.
• W2023142223 hasConcept C158749347 @default.
• W2023142223 hasConcept C173220165 @default.
• W2023142223 hasConcept C198291218 @default.
• W2023142223 hasConcept C198352243 @default.
• W2023142223 hasConcept C203224028 @default.
• W2023142223 hasConcept C2524010 @default.
• W2023142223 hasConcept C26141928 @default.
• W2023142223 hasConcept C2778339168 @default.
• W2023142223 hasConcept C2779863119 @default.
• W2023142223 hasConcept C32891209 @default.
• W2023142223 hasConcept C33923547 @default.
• W2023142223 hasConcept C42360764 @default.
• W2023142223 hasConcept C44870925 @default.
• W2023142223 hasConcept C4839761 @default.
• W2023142223 hasConcept C62520636 @default.
• W2023142223 hasConcept C70477161 @default.
• W2023142223 hasConcept C74902906 @default.
• W2023142223 hasConcept C96141758 @default.
• W2023142223 hasConcept C97355855 @default.
• W2023142223 hasConceptScore W2023142223C120665830 @default.
• W2023142223 hasConceptScore W2023142223C121332964 @default.
• W2023142223 hasConceptScore W2023142223C127413603 @default.
• W2023142223 hasConceptScore W2023142223C127592171 @default.
• W2023142223 hasConceptScore W2023142223C1276947 @default.
• W2023142223 hasConceptScore W2023142223C145148216 @default.
• W2023142223 hasConceptScore W2023142223C158749347 @default.
• W2023142223 hasConceptScore W2023142223C173220165 @default.
• W2023142223 hasConceptScore W2023142223C198291218 @default.
• W2023142223 hasConceptScore W2023142223C198352243 @default.

• next