@article{bd9a0cb740ff465d929d5d1c6fd94867,
title = "On the detection of the signature of silicon nanoparticle dust grains in coronal holes",
abstract = "We report on polarization measurements in the Fe XIII line at 1074.7 nm made during the total solar eclipse of 2001 June 21, which yielded the first signature of interplanetary dust in the inner corona. In the first-ever images at this wavelength, the signature of dust appears as a tangentially polarized emission in the radial extension of the low-temperature and low-density coronal holes as opposed to a predominantly radial polarization direction in the rest of the corona. The observed emission and polarization are attributed to fluorescence from silicon nanoparticle dust grains in the inner corona.",
keywords = "Dust, Extinction - eclipses, Polarization, Sun: corona, Sun: infrared, Sun: magnetic fields",
author = "Habbal, {Shadia Rifai} and Arndt, {Martina Belz} and Nayfeh, {Munir H.} and Jean Arnaud and Judd Johnson and Steve Hegwer and Richard Woo and Alexandru Ene and Feras Habbal",
note = "Funding Information: We thank Roper Scientific for lending us their deep depletion CCD camera and Cynthia Copeland for helping prepare Figure 1. Support for this project was provided by NSF grant ATM-0003661 and NASA grants NAG5-10873 and NAG5-9564 to the Smithsonian Astrophysical Observatory. Additional funding for M. B. A. was provided by Bridgewater State College (BSC) and BSC CART grants. M. H. N. acknowledges support from NSF grant BES-0118053 and the State of Illinois grant IDCCA 00-49106 to the University of Illinois at Urbana-Champaign. The He I 1083 nm NSO/Kitt Peak coronal hole maps used here are produced cooperatively by NSF/NOAO, NASA/GSFC, and NOAA/SEL.",
year = "2003",
month = aug,
day = "1",
doi = "10.1086/377678",
language = "English (US)",
volume = "592",
pages = "L87--L90",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "American Astronomical Society",
number = "2 II",
}