Probable detection of a bright infrared coronal emission line of Si IX near 3.93 microns

J. R. Kuhn; R. M. Macqueen; J. Streete; G. Tansey; I. Mann; P. Hillebrand; R. Coulter; H. Lin; D. Edmunds; P. Judge

doi:10.1086/307529

Probable detection of a bright infrared coronal emission line of Si IX near 3.93 microns

J. R. Kuhn, R. M. Macqueen, J. Streete, G. Tansey, I. Mann, P. Hillebrand, R. Coulter, H. Lin, D. Edmunds, P. Judge

Solar Frontiers

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Abstract

We report here the probable detection of an emission line of Si IX that was observed from an open C130 aircraft over the Pacific Ocean during the 1998 total solar eclipse. Although the IR data themselves are inconclusive because of the uncertainty in the precise central wavelengths of the narrowband filters during the eclipse, the consistency of the measured IR limb excess with simultaneous EUV emission measured by SOHO/Coronal Diagnostic Spectrometer and the EUV Imager Telescope support our detection claim. This line appears to be the brightest IR coronal line yet observed, and its existence may significantly improve future prospects for obtaining optical coronal magnetic field measurements.

Original language	English
Pages (from-to)	478-482
Number of pages	5
Journal	Astrophysical Journal
Volume	521
Issue number	1 PART 1
DOIs	https://doi.org/10.1086/307529
State	Published - Aug 10 1999

Keywords

Sun: corona
Sun: infrared
Sun: magnetic fields

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10.1086/307529

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title = "Probable detection of a bright infrared coronal emission line of Si IX near 3.93 microns",

abstract = "We report here the probable detection of an emission line of Si IX that was observed from an open C130 aircraft over the Pacific Ocean during the 1998 total solar eclipse. Although the IR data themselves are inconclusive because of the uncertainty in the precise central wavelengths of the narrowband filters during the eclipse, the consistency of the measured IR limb excess with simultaneous EUV emission measured by SOHO/Coronal Diagnostic Spectrometer and the EUV Imager Telescope support our detection claim. This line appears to be the brightest IR coronal line yet observed, and its existence may significantly improve future prospects for obtaining optical coronal magnetic field measurements.",

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author = "Kuhn, \{J. R.\} and Macqueen, \{R. M.\} and J. Streete and G. Tansey and I. Mann and P. Hillebrand and R. Coulter and H. Lin and D. Edmunds and P. Judge",

year = "1999",

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doi = "10.1086/307529",

language = "English",

volume = "521",

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T1 - Probable detection of a bright infrared coronal emission line of Si IX near 3.93 microns

AU - Kuhn, J. R.

AU - Macqueen, R. M.

AU - Streete, J.

AU - Tansey, G.

AU - Mann, I.

AU - Hillebrand, P.

AU - Coulter, R.

AU - Lin, H.

AU - Edmunds, D.

AU - Judge, P.

PY - 1999/8/10

Y1 - 1999/8/10

N2 - We report here the probable detection of an emission line of Si IX that was observed from an open C130 aircraft over the Pacific Ocean during the 1998 total solar eclipse. Although the IR data themselves are inconclusive because of the uncertainty in the precise central wavelengths of the narrowband filters during the eclipse, the consistency of the measured IR limb excess with simultaneous EUV emission measured by SOHO/Coronal Diagnostic Spectrometer and the EUV Imager Telescope support our detection claim. This line appears to be the brightest IR coronal line yet observed, and its existence may significantly improve future prospects for obtaining optical coronal magnetic field measurements.

AB - We report here the probable detection of an emission line of Si IX that was observed from an open C130 aircraft over the Pacific Ocean during the 1998 total solar eclipse. Although the IR data themselves are inconclusive because of the uncertainty in the precise central wavelengths of the narrowband filters during the eclipse, the consistency of the measured IR limb excess with simultaneous EUV emission measured by SOHO/Coronal Diagnostic Spectrometer and the EUV Imager Telescope support our detection claim. This line appears to be the brightest IR coronal line yet observed, and its existence may significantly improve future prospects for obtaining optical coronal magnetic field measurements.

KW - Sun: corona

KW - Sun: infrared

KW - Sun: magnetic fields

UR - https://www.scopus.com/pages/publications/0033542953

U2 - 10.1086/307529

DO - 10.1086/307529

M3 - Article

AN - SCOPUS:0033542953

SN - 0004-637X

VL - 521

SP - 478

EP - 482

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1 PART 1

ER -

Probable detection of a bright infrared coronal emission line of Si IX near 3.93 microns

Abstract

Keywords

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