Matches in SemOpenAlex for { <https://semopenalex.org/work/W3025298485> ?p ?o ?g. }
Showing items 1 to 82 of
82
with 100 items per page.
- W3025298485 abstract "We report the discovery of a brightness enhancement in the center of a large sunspot umbra at a wavelength of 3 mm using the Atacama Large Millimeter/sub-millimeter Array (ALMA). Sunspots are among the most prominent features on the solar surface, but many of their aspects are surprisingly poorly understood. We analyzed a λ = 3 mm (100 GHz) mosaic image obtained by ALMA that includes a large sunspot within the active region AR12470, on 2015 December 16. The 3 mm map has a 300'' × 300'' field of view and 49 × 22 spatial resolution, which is the highest spatial resolution map of an entire sunspot in this frequency range. We find a gradient of 3 mm brightness from a high value in the outer penumbra to a low value in the inner penumbra/outer umbra. Within the inner umbra, there is a marked increase in 3 mm brightness temperature, which we call an umbral brightness enhancement. This enhanced emission corresponds to a temperature excess of 800 K relative to the surrounding inner penumbral region and coincides with excess brightness in the 1330 and 1400 A slit-jaw images of the Interface Region Imaging Spectrograph (IRIS), adjacent to a partial lightbridge. This λ = 3 mm brightness enhancement may be an intrinsic feature of the sunspot umbra at chromospheric heights, such as a manifestation of umbral flashes, or it could be related to a coronal plume, since the brightness enhancement was coincident with the footpoint of a coronal loop observed at 171 A." @default.
- W3025298485 created "2020-05-21" @default.
- W3025298485 creator A5048198842 @default.
- W3025298485 creator A5072194142 @default.
- W3025298485 creator A5075426755 @default.
- W3025298485 creator A5078836331 @default.
- W3025298485 creator A5084783495 @default.
- W3025298485 date "2017-12-01" @default.
- W3025298485 modified "2023-09-30" @default.
- W3025298485 title "ALMA Discovery of Solar Umbral Brightness Enhancement at λ = 3 mm" @default.
- W3025298485 hasPublicationYear "2017" @default.
- W3025298485 type Work @default.
- W3025298485 sameAs 3025298485 @default.
- W3025298485 citedByCount "0" @default.
- W3025298485 crossrefType "journal-article" @default.
- W3025298485 hasAuthorship W3025298485A5048198842 @default.
- W3025298485 hasAuthorship W3025298485A5072194142 @default.
- W3025298485 hasAuthorship W3025298485A5075426755 @default.
- W3025298485 hasAuthorship W3025298485A5078836331 @default.
- W3025298485 hasAuthorship W3025298485A5084783495 @default.
- W3025298485 hasConcept C109792285 @default.
- W3025298485 hasConcept C115260700 @default.
- W3025298485 hasConcept C120665830 @default.
- W3025298485 hasConcept C121332964 @default.
- W3025298485 hasConcept C125245961 @default.
- W3025298485 hasConcept C1276947 @default.
- W3025298485 hasConcept C164705383 @default.
- W3025298485 hasConcept C197370839 @default.
- W3025298485 hasConcept C2780577055 @default.
- W3025298485 hasConcept C44870925 @default.
- W3025298485 hasConcept C53802167 @default.
- W3025298485 hasConcept C541997718 @default.
- W3025298485 hasConcept C62520636 @default.
- W3025298485 hasConcept C6260449 @default.
- W3025298485 hasConcept C71924100 @default.
- W3025298485 hasConcept C91228026 @default.
- W3025298485 hasConcept C98444146 @default.
- W3025298485 hasConceptScore W3025298485C109792285 @default.
- W3025298485 hasConceptScore W3025298485C115260700 @default.
- W3025298485 hasConceptScore W3025298485C120665830 @default.
- W3025298485 hasConceptScore W3025298485C121332964 @default.
- W3025298485 hasConceptScore W3025298485C125245961 @default.
- W3025298485 hasConceptScore W3025298485C1276947 @default.
- W3025298485 hasConceptScore W3025298485C164705383 @default.
- W3025298485 hasConceptScore W3025298485C197370839 @default.
- W3025298485 hasConceptScore W3025298485C2780577055 @default.
- W3025298485 hasConceptScore W3025298485C44870925 @default.
- W3025298485 hasConceptScore W3025298485C53802167 @default.
- W3025298485 hasConceptScore W3025298485C541997718 @default.
- W3025298485 hasConceptScore W3025298485C62520636 @default.
- W3025298485 hasConceptScore W3025298485C6260449 @default.
- W3025298485 hasConceptScore W3025298485C71924100 @default.
- W3025298485 hasConceptScore W3025298485C91228026 @default.
- W3025298485 hasConceptScore W3025298485C98444146 @default.
- W3025298485 hasLocation W30252984851 @default.
- W3025298485 hasOpenAccess W3025298485 @default.
- W3025298485 hasPrimaryLocation W30252984851 @default.
- W3025298485 hasRelatedWork W1630208570 @default.
- W3025298485 hasRelatedWork W1965676939 @default.
- W3025298485 hasRelatedWork W1968920182 @default.
- W3025298485 hasRelatedWork W1974623458 @default.
- W3025298485 hasRelatedWork W2002852221 @default.
- W3025298485 hasRelatedWork W2051067767 @default.
- W3025298485 hasRelatedWork W2101585865 @default.
- W3025298485 hasRelatedWork W2280277277 @default.
- W3025298485 hasRelatedWork W2545532032 @default.
- W3025298485 hasRelatedWork W2612303845 @default.
- W3025298485 hasRelatedWork W2625530819 @default.
- W3025298485 hasRelatedWork W2771004054 @default.
- W3025298485 hasRelatedWork W2963071594 @default.
- W3025298485 hasRelatedWork W2992612389 @default.
- W3025298485 hasRelatedWork W3083447208 @default.
- W3025298485 hasRelatedWork W3099592736 @default.
- W3025298485 hasRelatedWork W3100670874 @default.
- W3025298485 hasRelatedWork W3101574269 @default.
- W3025298485 hasRelatedWork W3101870941 @default.
- W3025298485 hasRelatedWork W587940021 @default.
- W3025298485 hasVolume "2017" @default.
- W3025298485 isParatext "false" @default.
- W3025298485 isRetracted "false" @default.
- W3025298485 magId "3025298485" @default.
- W3025298485 workType "article" @default.