selected publications

• conference proceeding

  • Constraints on Jupiter's hydrogen corona from Galileo UVS observations.  Planetary and Space Science. 415-421. 2002
  • Electron-impact excitation/emission and photoabsorption cross sections important in the terrestrial airglow and auroral analysis of rocket and satellite observations.  Physics and Chemistry of the Earth Part C Solar Terrestrial and Planetary Science. 573-581. 1999
  • Galileo ultraviolet spectrometer observations of Jupiter's auroral spectrum from 1600-3200 angstrom.  Journal of Geophysical Research: Planets. 20149-20158. 1997
  • The middle ultraviolet-visible spectrum of H-2 excited by electron impact.  Journal of Geophysical Research: Planets. 20113-20123. 1997

• journal article

  • Laboratory Study of the Cameron Bands, the First Negative Bands, and Fourth Positive Bands in the Middle Ultraviolet 180-280 nm by Electron Impact Upon CO.  Journal of Geophysical Research: Planets. 2021
    
  • The UV Spectrum of the Lyman-Birge-Hopfield Band System of N₂ Induced by Cascading from Electron Impact.  Journal of Geophysical Research: Space Physics. 2020
    
  • UV Study of the Fourth Positive Band System of CO and O I 135.6 nm From Electron Impact on CO and CO₂.  Journal of Geophysical Research: Space Physics. 2954-2977. 2019
    
  • Electron impact study of the 100eV emission cross section and lifetime of the Lyman-Birge-Hopfield band system of N-2: Direct excitation and cascade.  Journal of Geophysical Research: Space Physics. 6776-6790. 2017
  • Cassini UVIS observations of Titan ultraviolet airglow intensity dependence with solar zenith angle.  Geophysical Research Letters. 88-96. 2017
    
  SPECTRA, EMISSION YIELDS, CROSS SECTIONS, AND KINETIC ENERGY DISTRIBUTIONS OF HYDROGEN ATOMS FROM H₂ X ¹Σ_g⁺- d ³Π_u EXCITATION BY ELECTRON IMPACT.  The Astrophysical Journal: an international review of astronomy and astronomical physics. 2016
  
  Molecular nitrogen and methane density retrievals from Cassini UVIS dayglow observations of Titan's upper atmosphere.  Icarus. 301-312. 2015
  Decades-long changes of the interstellar wind through our solar system..  Science. 1080-1082. 2013
  
  Effects of methane on giant planet's UV emissions and implications for the auroral characteristics.  Journal of Molecular Spectroscopy. 108-117. 2013
  Cassini UVIS observations of Titan nightglow spectra.  Journal of Geophysical Research: Space Physics. 2012
  The production of Titan's ultraviolet nitrogen airglow.  Journal of Geophysical Research: Space Physics. 2011
  The auroral footprint of Enceladus on Saturn.  Nature. 331-333. 2011
  
  Titan airglow spectra from the Cassini Ultraviolet Imaging Spectrograph: FUV disk analysis.  Geophysical Research Letters. 2008
  Titan airglow spectra from Cassini Ultraviolet Imaging Spectrograph (UVIS): EUV analysis.  Geophysical Research Letters. 2007
  Enhanced transport in the polar mesosphere of Jupiter: Evidence from Cassini UVIS helium 584 angstrom airglow.  Journal of Geophysical Research: Planets. 2006
  Cassini UVIS observations of Jupiter's auroral variability.  Icarus. 312-326. 2005
  The Cassini Campaign observations of the Jupiter aurora by the Ultraviolet Imaging Spectrograph and the Space Telescope Imaging Spectrograph.  Icarus. 327-345. 2005
  Ultraviolet imaging spectroscopy shows an active saturnian system (vol 307, pg 1251, 2005).  Science. 1413-1413. 2005
  Ultraviolet Imaging Spectroscopy shows an active saturnian system.  Science. 1251-1255. 2005
  
  Spectroscopic evidence for high-altitude Aurora at Jupiter from Galileo Extreme Ultraviolet Spectrometer and Hopkins Ultraviolet Telescope observations.  Icarus. 151-171. 2001
  Detection of rapidly varying H-2 emissions in Jupiter's aurora from the Galileo orbiter.  Icarus. 314-317. 2001
  Emission cross section of OI (135.6 nm) at 100 eV resulting from electron-impact dissociative excitation of O-2..  Geophysical Research Letters. 1379-1382. 2001
  Jupiter: Aerosol Chemistry in the Polar Atmosphere..  The Astrophysical Journal: an international review of astronomy and astronomical physics. L215-L217. 2000
  Interplanetary Lyman α observations from Pioneer Venus over a solar cycle from 1978 to 1992.  Journal of Geophysical Research: Space Physics. 26833-26849. 1998
  Interplanetary Lyman α remote sensing with the Ulysses Interstellar Neutral Gas Experiment.  Journal of Geophysical Research: Space Physics. 26813-26831. 1998
  Galileo ultraviolet spectrometer observations of atomic hydrogen in the atmosphere of Ganymede.  Geophysical Research Letters. 2147-2150. 1997
  
  Kinetic-energy distribution of D(2p) atoms from analysis of the D Lyman-alpha line profile.  Physical Review A: Atomic, Molecular and Optical Physics. 1929-1937. 1997
  Solar hydrogen Lyman-alpha variation during solar cycles 21 and 22.  Geophysical Research Letters. 1123-1126. 1997
  Latitude variations in interplanetary Lyman-alpha data from the Galileo EUVS modeled with solar He 1083 nm images.  Geophysical Research Letters. 1893-1896. 1996
  Line profile of H Lyman- beta emission from dissociative excitation of H2..  Physical Review A: Atomic, Molecular and Optical Physics. 2303-2308. 1996
  Kinetic energy distribution of H(2p) atoms from dissociative excitation of H2..  Physical Review Letters. 3261-3264. 1995
  DIRECT OBSERVATIONS OF THE COMET SHOEMAKER-LEVY-9 FRAGMENT-G IMPACT BY GALILEO UVS.  Geophysical Research Letters. 1565-1568. 1995
  Medium-resolution studies of extreme-ultraviolet emission from CO by electron impact..  Physical Review A: Atomic, Molecular and Optical Physics. 2067-2074. 1995
  OBSERVATIONS OF INTERPLANETARY LYMAN-ALPHA WITH THE GALILEO ULTRAVIOLET SPECTROMETER - MULTIPLE-SCATTERING EFFECTS AT SOLAR MAXIMUM.  Astronomy and Astrophysics: a European journal. 283-303. 1994
  SOLAR-WIND LATITUDE VARIATIONS AND MULTIPLE-SCATTERING FROM GALILEO INTERPLANETARY LYMAN-ALPHA OBSERVATIONS.  Advances in Space Research. 37-40. 1993
  THE GALILEO AND PIONEER-VENUS ULTRAVIOLET SPECTROMETER EXPERIMENTS - SOLAR LYMAN-ALPHA LATITUDE VARIATION AT SOLAR MAXIMUM FROM INTERPLANETARY LYMAN-ALPHA OBSERVATIONS.  The Astrophysical Journal: an international review of astronomy and astronomical physics. 363-377. 1992
  
  GALILEO ULTRAVIOLET SPECTROMETER EXPERIMENT.  Space Science Reviews. 503-530. 1992
  GALILEO ULTRAVIOLET SPECTROMETER EXPERIMENT - INITIAL VENUS AND INTERPLANETARY CRUISE RESULTS.  Science. 1548-1550. 1991
  Medium-resolution studies of extreme ultraviolet emission from N2 by electron impact: Vibrational perturbations and cross sections of the c4' 1 Sigma u+ and b' 1 Sigma u+ states..  Physical review. A, General physics. 3524-3556. 1989
  AN INVESTIGATION OF THE 2ND NEGATIVE SYSTEM OF O-2+ BY ELECTRON-IMPACT.  Journal of Geophysical Research. 9893-9902. 1988
  SIMPLE ULTRAVIOLET CALIBRATION SOURCE WITH REFERENCE SPECTRA AND ITS USE WITH THE GALILEO ORBITER ULTRAVIOLET SPECTROMETER.  Applied Optics. 890-914. 1988
  SOLAR-CYCLE STUDY OF INTERPLANETARY LYMAN-ALPHA VARIATIONS - PIONEER-VENUS ORBITER SKY BACKGROUND RESULTS.  The Astrophysical Journal: an international review of astronomy and astronomical physics. 964-986. 1987
  PREDICTED INTERPLANETARY DISTRIBUTION OF LYMAN-ALPHA INTENSITY AND POLARIZATION.  Icarus. 163-170. 1985
  Extreme ultraviolet observations from voyager 2 encounter with jupiter..  Science. 962-966. 1979
  Extreme ultraviolet observations from voyager 1 encounter with jupiter..  Science. 979-982. 1979
  
  Multicolor observations of phobos with the viking lander cameras: evidence for a carbonaceous chondritic composition..  Science. 66-69. 1978
  The composition of phobos: evidence for carbonaceous chondrite surface from spectral analysis..  Science. 64-66. 1978
  
  COMPLEX REFRACTIVE-INDEX OF MARTIAN DUST - MARINER-9 ULTRAVIOLET OBSERVATIONS.  Icarus. 55-67. 1976
  MARINER-9 ULTRAVIOLET SPECTROMETER EXPERIMENT - BRIGHT-LIMB OBSERVATIONS OF LOWER ATMOSPHERE OF MARS.  Journal of the Atmospheric Sciences. 544-552. 1976
  ... more