Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Spectropolarimetric capabilities of Ca II 8542 angstrom line
Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för astronomi.
Visa övriga samt affilieringar
Antal upphovsmän: 72016 (Engelska)Ingår i: Monthly notices of the Royal Astronomical Society, ISSN 0035-8711, E-ISSN 1365-2966, Vol. 459, nr 3, s. 3363-3376Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

The next generation of space-and ground-based solar missions aim to study the magnetic properties of the solar chromosphere using the infrared Ca II lines and the He I 10830 angstrom line. The former seem to be the best candidates to study the stratification of magnetic fields in the solar chromosphere and their relation to the other thermodynamical properties underlying the chromospheric plasma. The purpose of this work is to provide a detailed analysis of the diagnostic capabilities of the Ca II 8542 angstrom line, anticipating forthcoming observational facilities. We study the sensitivity of the Ca II 8542 angstrom line to perturbations applied to the physical parameters of reference semi-empirical 1D model atmospheres using response functions and we make use of 3D magnetohydrodynamics simulations to examine the expected polarization signals for moderate magnetic field strengths. Our results indicate that the Ca II 8542 angstrom line is mostly sensitive to the layers enclosed in the range log tau = [0, -5.5], under the physical conditions that are present in our model atmospheres. In addition, the simulated magnetic flux tube generates strong longitudinal signals in its centre and moderate transversal signals, due to the vertical expansion of magnetic field lines, in its edge. Thus, observing the Ca II 8542 angstrom line we will be able to infer the 3D geometry of moderate magnetic field regions.

Ort, förlag, år, upplaga, sidor
2016. Vol. 459, nr 3, s. 3363-3376
Nyckelord [en]
techniques: polarimetric, Sun: chromosphere, Sun: magnetic fields
Nationell ämneskategori
Fysik
Identifikatorer
URN: urn:nbn:se:su:diva-133240DOI: 10.1093/mnras/stw867ISI: 000379840900082OAI: oai:DiVA.org:su-133240DiVA, id: diva2:957950
Tillgänglig från: 2016-09-05 Skapad: 2016-09-05 Senast uppdaterad: 2022-02-23Bibliografiskt granskad

Open Access i DiVA

Fulltext saknas i DiVA

Övriga länkar

Förlagets fulltext

Person

de la Cruz Rodriguez, Jaime

Sök vidare i DiVA

Av författaren/redaktören
de la Cruz Rodriguez, Jaime
Av organisationen
Institutionen för astronomi
I samma tidskrift
Monthly notices of the Royal Astronomical Society
Fysik

Sök vidare utanför DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetricpoäng

doi
urn-nbn
Totalt: 31 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf