Spectropolarimetry of Atomic and Molecular Lines near 4135 nm

Matthew James Penn; Han Uitenbroek; Alan Clark; Roy Coulter; Phil Goode; Wenda Cao

doi:10.1007/s11207-016-0984-0

Spectropolarimetry of Atomic and Molecular Lines near 4135 nm

Matthew James Penn, Han Uitenbroek, Alan Clark, Roy Coulter, Phil Goode, Wenda Cao

Center For Solar Terrestrial Research - Big Bear Solar Observatory

Research output: Contribution to journal › Article › peer-review

Abstract

New spatially scanned spectropolarimetry sunspot observations are made of photospheric atomic and molecular absorption lines near 4135 nm. The relative splittings among several atomic lines are measured and shown to agree with values calculated with configuration interaction and intermediate coupling. Large splitting is seen in a line identified with Fe i at 4137 nm, showing multiple Stokes V components and an unusual linear polarization. This line will be a sensitive probe of quiet-Sun magnetic fields, with a magnetic sensitivity of 2.5 times higher than that of the well-known 1565 nm Fe i line.

Original language	English (US)
Pages (from-to)	2243-2252
Number of pages	10
Journal	Solar Physics
Volume	291
Issue number	8
DOIs	https://doi.org/10.1007/s11207-016-0984-0
State	Published - Oct 1 2016

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

Detectors
Solar atmosphere
Solar magnetic fields

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10.1007/s11207-016-0984-0

Cite this

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title = "Spectropolarimetry of Atomic and Molecular Lines near 4135 nm",

abstract = "New spatially scanned spectropolarimetry sunspot observations are made of photospheric atomic and molecular absorption lines near 4135 nm. The relative splittings among several atomic lines are measured and shown to agree with values calculated with configuration interaction and intermediate coupling. Large splitting is seen in a line identified with Fe i at 4137 nm, showing multiple Stokes V components and an unusual linear polarization. This line will be a sensitive probe of quiet-Sun magnetic fields, with a magnetic sensitivity of 2.5 times higher than that of the well-known 1565 nm Fe i line.",

keywords = "Detectors, Solar atmosphere, Solar magnetic fields",

author = "Penn, {Matthew James} and Han Uitenbroek and Alan Clark and Roy Coulter and Phil Goode and Wenda Cao",

note = "Funding Information: We wish to thank Robert Kurucz for clarifying discussions and the anonymous referee for a thorough review. NSO is operated by AURA Inc., under contract to the National Science Foundation. PG acknowledges AFOSR grant FA9550-15-1-0322. Publisher Copyright: {\textcopyright} 2016, Springer Science+Business Media Dordrecht.",

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doi = "10.1007/s11207-016-0984-0",

language = "English (US)",

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journal = "Solar Physics",

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TY - JOUR

T1 - Spectropolarimetry of Atomic and Molecular Lines near 4135 nm

AU - Penn, Matthew James

AU - Uitenbroek, Han

AU - Clark, Alan

AU - Coulter, Roy

AU - Goode, Phil

AU - Cao, Wenda

N1 - Funding Information: We wish to thank Robert Kurucz for clarifying discussions and the anonymous referee for a thorough review. NSO is operated by AURA Inc., under contract to the National Science Foundation. PG acknowledges AFOSR grant FA9550-15-1-0322. Publisher Copyright: © 2016, Springer Science+Business Media Dordrecht.

PY - 2016/10/1

Y1 - 2016/10/1

N2 - New spatially scanned spectropolarimetry sunspot observations are made of photospheric atomic and molecular absorption lines near 4135 nm. The relative splittings among several atomic lines are measured and shown to agree with values calculated with configuration interaction and intermediate coupling. Large splitting is seen in a line identified with Fe i at 4137 nm, showing multiple Stokes V components and an unusual linear polarization. This line will be a sensitive probe of quiet-Sun magnetic fields, with a magnetic sensitivity of 2.5 times higher than that of the well-known 1565 nm Fe i line.

AB - New spatially scanned spectropolarimetry sunspot observations are made of photospheric atomic and molecular absorption lines near 4135 nm. The relative splittings among several atomic lines are measured and shown to agree with values calculated with configuration interaction and intermediate coupling. Large splitting is seen in a line identified with Fe i at 4137 nm, showing multiple Stokes V components and an unusual linear polarization. This line will be a sensitive probe of quiet-Sun magnetic fields, with a magnetic sensitivity of 2.5 times higher than that of the well-known 1565 nm Fe i line.

KW - Detectors

KW - Solar atmosphere

KW - Solar magnetic fields

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DO - 10.1007/s11207-016-0984-0

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SN - 0038-0938

VL - 291

SP - 2243

EP - 2252

JO - Solar Physics

JF - Solar Physics

IS - 8

ER -

Spectropolarimetry of Atomic and Molecular Lines near 4135 nm

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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