| Year |
Citation |
Score |
| 2020 |
Mesick K, Feldman W, Mullin E, Stonehill L. New and extended data processing of Mars Odyssey Neutron Spectrometer data Icarus. 335: 113397. DOI: 10.1016/J.Icarus.2019.113397 |
0.424 |
|
| 2019 |
Wilson JT, Lawrence DJ, Peplowski PN, Feldman WC. MESSENGER Gamma Ray Spectrometer and Epithermal Neutron Hydrogen Data Reveal Compositional Differences Between Mercury's Hot and Cold Poles. Journal of Geophysical Research. Planets. 124: 721-733. PMID 31218154 DOI: 10.1029/2018Je005871 |
0.787 |
|
| 2018 |
Pathare AV, Feldman WC, Prettyman TH, Maurice S. Driven by excess? Climatic implications of new global mapping of near-surface water-equivalent hydrogen on Mars Icarus. 301: 97-116. DOI: 10.1016/J.Icarus.2017.09.031 |
0.381 |
|
| 2018 |
Wilson JT, Eke VR, Massey RJ, Elphic RC, Feldman WC, Maurice S, Teodoro LF. Equatorial locations of water on Mars: Improved resolution maps based on Mars Odyssey Neutron Spectrometer data Icarus. 299: 148-160. DOI: 10.1016/J.Icarus.2017.07.028 |
0.648 |
|
| 2017 |
Lawrence DJ, Peplowski PN, Beck AW, Feldman WC, Frank EA, McCoy TJ, Nittler LR, Solomon SC. Compositional terranes on Mercury: Information from fast neutrons Icarus. 281: 32-45. DOI: 10.1016/J.Icarus.2016.07.018 |
0.747 |
|
| 2016 |
Prettyman TH, Yamashita N, Toplis MJ, McSween HY, Schorghofer N, Marchi S, Feldman WC, Castillo-Rogez J, Forni O, Lawrence DJ, Ammannito E, Ehlmann BL, Sizemore HG, Joy SP, Polanskey CA, et al. Extensive water ice within Ceres' aqueously altered regolith: Evidence from nuclear spectroscopy. Science (New York, N.Y.). PMID 27980087 DOI: 10.1126/Science.Aah6765 |
0.529 |
|
| 2016 |
Lawrence DJ, Peplowski PN, Feldman WC, Schwadron NA, Spence HE. Galactic cosmic ray variations in the inner heliosphere from solar distances less than 0.5 AU: Measurements from the MESSENGER Neutron Spectrometer Journal of Geophysical Research a: Space Physics. 121: 7398-7406. DOI: 10.1002/2016Ja022962 |
0.742 |
|
| 2015 |
Lawrence DJ, Feldman WC, Peplowski PN, Solomon SC. The 4 June 2011 neutron event at Mercury: A defense of the solar origin hypothesis. Journal of Geophysical Research. Space Physics. 120: 5284-5289. PMID 26937331 DOI: 10.1002/2015Ja021069 |
0.722 |
|
| 2015 |
De Sanctis MC, Ammannito E, Raponi A, Marchi S, McCord TB, McSween HY, Capaccioni F, Capria MT, Carrozzo FG, Ciarniello M, Longobardo A, Tosi F, Fonte S, Formisano M, Frigeri A, ... ... Feldman W, et al. Ammoniated phyllosilicates with a likely outer Solar System origin on (1) Ceres. Nature. 528: 241-4. PMID 26659184 DOI: 10.1038/Nature16172 |
0.411 |
|
| 2015 |
Eke VR, Bower KE, Diserens S, Ryder M, Yeomans PEL, Teodoro LFA, Elphic RC, Feldman WC, Hermalyn B, Lavelle CM, Lawrence DJ. The effect of craters on the lunar neutron flux Journal of Geophysical Research E: Planets. 120: 1377-1395. DOI: 10.1002/2015Je004856 |
0.574 |
|
| 2015 |
Lawrence DJ, Feldman WC, Peplowski PN, Solomon SC. The 4 June 2011 neutron event at Mercury: A defense of the solar origin hypothesis Journal of Geophysical Research a: Space Physics. 120: 5284-5289. DOI: 10.1002/2015JA021069 |
0.641 |
|
| 2015 |
Feldman WC, Lawrence DJ, Vestrand WT, Baker DN, Peplowski PN, Rodgers DJ. Long-duration neutron production by nonflaring transients in the solar corona Journal of Geophysical Research a: Space Physics. 120: 8247-8266. DOI: 10.1002/2015Ja021042 |
0.737 |
|
| 2015 |
Lawrence DJ, Anderson BJ, Baker DN, Feldman WC, Ho GC, Korth H, McNutt RL, Peplowski PN, Solomon SC, Starr RD, Vandegriff JD, Winslow RM. Comprehensive survey of energetic electron events in Mercury's magnetosphere with data from the MESSENGER Gamma-Ray and Neutron Spectrometer Journal of Geophysical Research a: Space Physics. 120: 2851-2876. DOI: 10.1002/2014Ja020792 |
0.709 |
|
| 2015 |
Rodgers DJ, Lawrence DJ, Feldman WC, Peplowski PN. Neutrons and energetic charged particles in the inner heliosphere: Measurements of the MESSENGER Neutron Spectrometer from 0.3 to 0.85 AU Journal of Geophysical Research a: Space Physics. 120: 841-854. DOI: 10.1002/2014Ja020263 |
0.745 |
|
| 2014 |
Peplowski PN, Lawrence DJ, Feldman WC, Goldsten JO, Bazell D, Evans LG, Head JW, Nittler LR, Solomon SC, Weider SZ. Geochemical terranes of Mercury's northern hemisphere as revealed by MESSENGER neutron measurements Icarus. DOI: 10.1016/J.Icarus.2015.02.002 |
0.73 |
|
| 2014 |
Lawrence DJ, Feldman WC, Gold RE, Goldsten JO, McNutt RL. The neutron, gamma-ray, X-ray spectrometer (NGXS): A compact instrument for making combined measurements of neutrons, gamma-rays, and X-rays Acta Astronautica. 93: 524-529. DOI: 10.1016/J.Actaastro.2012.06.017 |
0.547 |
|
| 2014 |
Domingue DL, Chapman CR, Killen RM, Zurbuchen TH, Gilbert JA, Sarantos M, Benna M, Slavin JA, Schriver D, Trávní?ek PM, Orlando TM, Sprague AL, Blewett DT, Gillis-Davis JJ, Feldman WC, et al. Mercury's weather-beaten surface: Understanding mercury in the context of lunar and asteroidal space weathering studies Space Science Reviews. 181: 121-214. DOI: 10.1007/S11214-014-0039-5 |
0.7 |
|
| 2014 |
Teodoro LFA, Eke VR, Elphic RC, Feldman WC, Lawrence DJ. How well do we know the polar hydrogen distribution on the Moon? Journal of Geophysical Research: Planets. 119: 574-593. DOI: 10.1002/2013Je004421 |
0.556 |
|
| 2014 |
Lawrence DJ, Feldman WC, Goldsten JO, Peplowski PN, Rodgers DJ, Solomon SC. Detection and characterization of 0.5-8MeV neutrons near Mercury: Evidence for a solar origin Journal of Geophysical Research: Space Physics. 119: 5150-5171. DOI: 10.1002/2013Ja019037 |
0.747 |
|
| 2013 |
Lawrence DJ, Peplowski PN, Prettyman TH, Feldman WC, Bazell D, Mittlefehldt DW, Reedy RC, Yamashita N. Constraints on Vesta's elemental composition: Fast neutron measurements by Dawn's gamma ray and neutron detector. Meteoritics & Planetary Science. 48: 2271-2288. PMID 26074718 DOI: 10.1111/Maps.12187 |
0.721 |
|
| 2013 |
Lawrence DJ, Feldman WC, Goldsten JO, Maurice S, Peplowski PN, Anderson BJ, Bazell D, McNutt RL, Nittler LR, Prettyman TH, Rodgers DJ, Solomon SC, Weider SZ. Evidence for water ice near Mercury's north pole from MESSENGER Neutron Spectrometer measurements. Science (New York, N.Y.). 339: 292-6. PMID 23196909 DOI: 10.1126/Science.1229953 |
0.714 |
|
| 2013 |
Prettyman TH, Mittlefehldt DW, Yamashita N, Beck AW, Feldman WC, Hendricks JS, Lawrence DJ, Mccoy TJ, Mcsween HY, Peplowski PN, Reedy RC, Toplis MJ, Le Corre L, Mizzon H, Reddy V, et al. Neutron absorption constraints on the composition of 4 Vesta Meteoritics and Planetary Science. 48: 2211-2236. DOI: 10.1111/Maps.12244 |
0.723 |
|
| 2013 |
Peplowski PN, Lawrence DJ, Prettyman TH, Yamashita N, Bazell D, Feldman WC, Le Corre L, McCoy TJ, Reddy V, Reedy RC, Russell CT, Toplis MJ. Compositional variability on the surface of 4 Vesta revealed through GRaND measurements of high-energy gamma rays Meteoritics and Planetary Science. 48: 2252-2270. DOI: 10.1111/Maps.12176 |
0.72 |
|
| 2013 |
Yamashita N, Prettyman TH, Mittlefehldt DW, Toplis MJ, Mccoy TJ, Beck AW, Reedy RC, Feldman WC, Lawrence DJ, Peplowski PN, Forni O, Mizzon H, Raymond CA, Russell CT. Distribution of iron on Vesta Meteoritics and Planetary Science. 48: 2237-2251. DOI: 10.1111/Maps.12139 |
0.687 |
|
| 2013 |
Wang A, Feldman WC, Mellon MT, Zheng M. The preservation of subsurface sulfates with mid-to-high degree of hydration in equatorial regions on Mars Icarus. 226: 980-991. DOI: 10.1016/J.Icarus.2013.07.020 |
0.364 |
|
| 2013 |
Lasue J, Mangold N, Hauber E, Clifford S, Feldman W, Gasnault O, Grima C, Maurice S, Mousis O. Quantitative Assessments of the Martian Hydrosphere Space Science Reviews. 174: 155-212. DOI: 10.1007/S11214-012-9946-5 |
0.303 |
|
| 2013 |
Travis BJ, Feldman WC, Maurice S. A mechanism for bringing ice and brines to the near surface of Mars Journal of Geophysical Research E: Planets. 118: 877-890. DOI: 10.1002/Jgre.20074 |
0.343 |
|
| 2012 |
Prettyman TH, Mittlefehldt DW, Yamashita N, Lawrence DJ, Beck AW, Feldman WC, McCoy TJ, McSween HY, Toplis MJ, Titus TN, Tricarico P, Reedy RC, Hendricks JS, Forni O, Le Corre L, et al. Elemental mapping by Dawn reveals exogenic H in Vesta's regolith. Science (New York, N.Y.). 338: 242-6. PMID 22997135 DOI: 10.1126/Science.1225354 |
0.526 |
|
| 2012 |
Russell CT, Raymond CA, Coradini A, McSween HY, Zuber MT, Nathues A, De Sanctis MC, Jaumann R, Konopliv AS, Preusker F, Asmar SW, Park RS, Gaskell R, Keller HU, Mottola S, ... ... Feldman WC, et al. Dawn at Vesta: testing the protoplanetary paradigm. Science (New York, N.Y.). 336: 684-6. PMID 22582253 DOI: 10.1126/Science.1219381 |
0.498 |
|
| 2012 |
Eke VR, Teodoro LFA, Lawrence DJ, Elphic RC, Feldman WC. A QUANTITATIVE COMPARISON OF LUNAR ORBITAL NEUTRON DATA The Astrophysical Journal. 747: 6. DOI: 10.1088/0004-637X/747/1/6 |
0.589 |
|
| 2012 |
Peplowski PN, Hepplewhite PD, Lawrence DJ, Feldman WC, Hibbitts CA. Operation of a 3He proportional counter in the Ganymede radiation environment Planetary and Space Science. 61: 46-52. DOI: 10.1016/J.Pss.2011.07.002 |
0.725 |
|
| 2011 |
Lawrence DJ, Eke VR, Elphic RC, Feldman WC, Funsten HO, Prettyman TH, Teodoro LF. Technical comment on "Hydrogen mapping of the lunar South Pole using the LRO neutron detector experiment LEND". Science (New York, N.Y.). 334: 1058-c. PMID 22116865 DOI: 10.1126/Science.1203341 |
0.575 |
|
| 2011 |
Maurice S, Feldman W, Diez B, Gasnault O, Lawrence DJ, Pathare A, Prettyman T. Mars Odyssey neutron data: 1. Data processing and models of water-equivalent-hydrogen distribution Journal of Geophysical Research E: Planets. 116. DOI: 10.1029/2011Je003810 |
0.598 |
|
| 2011 |
Feldman WC, Pathare A, Maurice S, Prettyman TH, Lawrence DJ, Milliken RE, Travis BJ. Mars Odyssey neutron data: 2. Search for buried excess water ice deposits at nonpolar latitudes on Mars Journal of Geophysical Research E: Planets. 116. DOI: 10.1029/2011Je003806 |
0.569 |
|
| 2011 |
Lawrence DJ, Hurley DM, Feldman WC, Elphic RC, Maurice S, Miller RS, Prettyman TH. Sensitivity of orbital neutron measurements to the thickness and abundance of surficial lunar water Journal of Geophysical Research. 116. DOI: 10.1029/2010Je003678 |
0.584 |
|
| 2011 |
Lawrence DJ, Harmon JK, Feldman WC, Goldsten JO, Paige DA, Peplowski PN, Rhodes EA, Selby CM, Solomon SC. Predictions of MESSENGER Neutron Spectrometer measurements for Mercurys north polar region Planetary and Space Science. 59: 1665-1669. DOI: 10.1016/J.Pss.2011.07.001 |
0.731 |
|
| 2010 |
Lawrence DJ, Elphic RC, Feldman WC, Funsten HO, Prettyman TH. Performance of orbital neutron instruments for spatially resolved hydrogen measurements of airless planetary bodies. Astrobiology. 10: 183-200. PMID 20298147 DOI: 10.1089/Ast.2009.0401 |
0.558 |
|
| 2010 |
Nelli SM, Renno NO, Murphy JR, Feldman WC, Bougher SW. Simulations of atmospheric phenomena at the Phoenix landing site with the Ames General Circulation Model Journal of Geophysical Research E: Planets. 115. DOI: 10.1029/2010Je003568 |
0.389 |
|
| 2010 |
Feldman WC, Lawrence DJ, Goldsten JO, Gold RE, Baker DN, Haggerty DK, Ho GC, Krucker S, Lin RP, Mewaldt RA, Murphy RJ, Nittler LR, Rhodes EA, Slavin JA, Solomon SC, et al. Evidence for extended acceleration of solar flare ions from 1-8 MeV solar neutrons detected with the MESSENGER Neutron Spectrometer Journal of Geophysical Research: Space Physics. 115: n/a-n/a. DOI: 10.1029/2009Ja014535 |
0.597 |
|
| 2010 |
Lawrence DJ, Feldman WC, Goldsten JO, McCoy TJ, Blewett DT, Boynton WV, Evans LG, Nittler LR, Rhodes EA, Solomon SC. Identification and measurement of neutron-absorbing elements on Mercury's surface Icarus. 209: 195-209. DOI: 10.1016/J.Icarus.2010.04.005 |
0.566 |
|
| 2009 |
Nelli SM, Murphy JR, Feldman WC, Schaeffer JR. Characterization of the nighttime low-latitude water ice deposits in the NASA Ames Mars General Circulation Model 2.1 under present-day atmospheric conditions Journal of Geophysical Research. 114. DOI: 10.1029/2008Je003289 |
0.384 |
|
| 2009 |
Prettyman TH, Feldman WC, Titus TN. Characterization of Mars' seasonal caps using neutron spectroscopy Journal of Geophysical Research E: Planets. 114. DOI: 10.1029/2008Je003275 |
0.391 |
|
| 2009 |
Mellon MT, Boynton WV, Feldman WC, Arvidson RE, Titus Joshua TN, Bandfield L, Putzig NE, Sizemore HG. A prelanding assessment of the ice table depth and ground ice characteristics in Martian permafrost at the Phoenix landing site Journal of Geophysical Research E: Planets. 114. DOI: 10.1029/2007Je003067 |
0.303 |
|
| 2009 |
Diez B, Feldman WC, Mangold N, Baratoux D, Maurice S, Gasnault O, d'Uston L, Costard F. Contribution of Mars Odyssey GRS at Central Elysium Planitia Icarus. 200: 19-29. DOI: 10.1016/J.Icarus.2008.11.011 |
0.458 |
|
| 2008 |
Solomon SC, McNutt RL, Watters TR, Lawrence DJ, Feldman WC, Head JW, Krimigis SM, Murchie SL, Phillips RJ, Slavin JA, Zuber MT. Return to Mercury: a global perspective on MESSENGER's first Mercury flyby. Science (New York, N.Y.). 321: 59-62. PMID 18599768 DOI: 10.1126/Science.1159706 |
0.541 |
|
| 2008 |
NIETO MM, FELDMAN WC, LAWRENCE DJ. TESTING THE UNITARITY OF THE CKM MATRIX WITH A SPACE-BASED NEUTRON DECAY EXPERIMENT Modern Physics Letters A. 23: 1735-1743. DOI: 10.1142/S0217732308027187 |
0.503 |
|
| 2008 |
Feldman WC, Bandfield JL, Diez B, Elphic RC, Maurice S, Nelli SM. North to south asymmetries in the water-equivalent hydrogen distribution at high latitudes on Mars Journal of Geophysical Research E: Planets. 113. DOI: 10.1029/2007Je003020 |
0.421 |
|
| 2008 |
Bandfield JL, Feldman WC. Martian high latitude permafrost depth and surface cover thermal inertia distributions Journal of Geophysical Research E: Planets. 113. DOI: 10.1029/2007Je003007 |
0.388 |
|
| 2008 |
Diez B, Feldman WC, Maurice S, Gasnault O, Prettyman TH, Mellon MT, Aharonson O, Schorghofer N. H layering in the top meter of Mars Icarus. 196: 409-421. DOI: 10.1016/J.Icarus.2008.02.006 |
0.423 |
|
| 2008 |
Feldman WC, Bourke MC, Elphic RC, Maurice S, Bandfield J, Prettyman TH, Diez B, Lawrence DJ. Hydrogen content of sand dunes within Olympia Undae Icarus. 196: 422-432. DOI: 10.1016/J.Icarus.2007.08.044 |
0.532 |
|
| 2007 |
Feldman WC, Mellon MT, Gasnault O, Diez B, Elphic RC, Hagerty JJ, Lawrence DJ, Maurice S, Prettyman TH. Vertical distribution of hydrogen at high northern latitudes on Mars: The Mars Odyssey Neutron Spectrometer Geophysical Research Letters. 34. DOI: 10.1029/2006Gl028936 |
0.759 |
|
| 2007 |
Lawrence DJ, Puetter RC, Elphic RC, Feldman WC, Hagerty JJ, Prettyman TH, Spudis PD. Global spatial deconvolution of Lunar Prospector Th abundances Geophysical Research Letters. 34. DOI: 10.1029/2006Gl028530 |
0.734 |
|
| 2007 |
Russell CT, Barucci MA, Binzel RP, Capria MT, Christensen U, Coradini A, De Sanctis MC, Feldman WC, Jaumann R, Keller HU, Konopliv AS, McCord TB, McFadden LA, McKeegan KD, McSween HY, et al. Exploring the asteroid belt with ion propulsion: Dawn mission history, status and plans Advances in Space Research. 40: 193-201. DOI: 10.1016/J.Asr.2007.05.083 |
0.331 |
|
| 2007 |
Boynton WV, Sprague AL, Solomon SC, Starr RD, Evans LG, Feldman WC, Trombka JI, Rhodes EA. MESSENGER and the chemistry of Mercury's surface Space Science Reviews. 131: 85-104. DOI: 10.1007/S11214-007-9258-3 |
0.408 |
|
| 2006 |
Lawrence DJ, Feldman WC, Elphic RC, Hagerty JJ, Maurice S, McKinney GW, Prettyman TH. Improved modeling of Lunar Prospector neutron spectrometer data: Implications for hydrogen deposits at the lunar poles Journal of Geophysical Research E: Planets. 111. DOI: 10.1029/2005Je002637 |
0.76 |
|
| 2006 |
Hagerty JJ, Lawrence DJ, Hawke BR, Vaniman DT, Elphic RC, Feldman WC. Refined thorium abundances for lunar red spots: Implications for evolved, nonmare volcanism on the Moon Journal of Geophysical Research E: Planets. 111. DOI: 10.1029/2005Je002592 |
0.758 |
|
| 2006 |
McKinney GW, Lawrence DJ, Prettyman TH, Elphic RC, Feldman WC, Hagerty JJ. MCNPX benchmark for cosmic ray interactions with the Moon Journal of Geophysical Research E: Planets. 111. DOI: 10.1029/2005Je002551 |
0.749 |
|
| 2005 |
Feldman WC, Prettyman TH, Maurice S, Nelli S, Elphic R, Funsten HO, Gasnault O, Lawrence DJ, Murphy JR, Tokar RL, Vaniman DT. Topographic control of hydrogen deposits at low latitudes to midlatitudes of Mars Journal of Geophysical Research. 110. DOI: 10.1029/2005Je002452 |
0.484 |
|
| 2005 |
Lawson SL, Feldman WC, Lawrence DJ, Moore KR, Elphic RC, Belian RD, Maurice S. Recent outgassing from the lunar surface: The Lunar Prospector Alpha Particle Spectrometer Journal of Geophysical Research E: Planets. 110: 1-8. DOI: 10.1029/2005Je002433 |
0.412 |
|
| 2005 |
Lawrence DJ, Hawke BR, Hagerty JJ, Elphic RC, Feldman WC, Prettyman TH, Vaniman DT. Evidence for a high-Th, evolved lithology on the Moon at Hansteen Alpha Geophysical Research Letters. 32: 1-4. DOI: 10.1029/2004Gl022022 |
0.719 |
|
| 2004 |
Feldman WC, Mellon MT, Maurice S, Prettyman TH, Carey JW, Vaniman DT, Bish DL, Fialips CI, Chipera SJ, Kargel JS, Elphic RC, Funsten HO, Lawrence DJ, Tokar RL. Hydrated states of MgSO4 at equatorial latiudes on Mars Geophysical Research Letters. 31: L16702 1-4. DOI: 10.1029/2004Gl020181 |
0.455 |
|
| 2004 |
Feldman WC, Ahola K, Barraclough BL, Belian RD, Black RK, Elphic RC, Everett DT, Fuller KR, Kroesche J, Lawrence DJ, Lawson SL, Longmire JL, Maurice S, Miller MC, Prettyman TH, et al. Gamma-Ray, Neutron, and Alpha-Particle Spectrometers for the Lunar Prospector mission Journal of Geophysical Research E: Planets. 109. DOI: 10.1029/2003Je002207 |
0.494 |
|
| 2004 |
Feldman WC, Prettyman TH, Maurice S, Plaut JJ, Bish DL, Vaniman DT, Mellon MT, Metzger AE, Squyres SW, Karunatillake S, Boynton WV, Elphic RC, Funsten HO, Lawrence DJ, Tokar RL. Global distribution of near-surface hydrogen on Mars Journal of Geophysical Research E: Planets. 109: E09006 1-13. DOI: 10.1029/2003Je002160 |
0.521 |
|
| 2004 |
Prettyman TH, Feldman WC, Mellon MT, McKinney GW, Boynton WV, Karuantillake S, Lawrence DJ, Maurice S, Metzger AE, Murphy JR, Squyres SW, Starr RD, Tokar RL. Composition and structure of the Martian surface at high southern latitudes from neutron spectroscopy Journal of Geophysical Research E: Planets. 109. DOI: 10.1029/2003Je002139 |
0.501 |
|
| 2002 |
Tokar RL, Feldman WC, Prettyman TH, Moore KR, Lawrence DJ, Elphic RC, Kreslavsky MA, Head JW, Mustard JF, Boynton WV. Ice concentration and distribution near the south pole of Mars: Synthesis of odyssey and global surveyor analyses Geophysical Research Letters. 29: 10-1-10-4. DOI: 10.1029/2002Gl015691 |
0.491 |
|
| 2002 |
Lawrence DJ, Feldman WC, Elphic RC, Little RC, Prettyman TH, Maurice S, Lucey PG, Binder AB. Iron abundances on the lunar surface as measured by the Lunar Prospector gamma-ray and neutron spectrometers Journal of Geophysical Research E: Planets. 107: 13-1. DOI: 10.1029/2001Je001530 |
0.444 |
|
| 2002 |
Feldman WC, Prettyman TH, Tokar RL, Boynton WV, Byrd RC, Fuller KR, Gasnault O, Longmire JL, Olsher RH, Storms SA, Thornton GW. Fast neutron flux spectrum aboard Mars Odyssey during cruise Journal of Geophysical Research: Space Physics. 107. DOI: 10.1029/2001Ja000295 |
0.34 |
|
| 2002 |
Elphic RC, Lawrence DJ, Feldman WC, Barraclough BL, Gasnault OM, Maurice S, Lucey PG, Blewett DT, Binder AB. Lunar prospector neutron spectrometer constraints on TiO2 Journal of Geophysical Research E: Planets. 107. DOI: 10.1029/2000Je001460 |
0.525 |
|
| 2002 |
Johnson JR, Feldman WC, Lawrence DJ, Maurice S, Swindle TD, Lucey PG. Lunar prospector epithermal neutrons from impact craters and landing sites: Implications for surface maturity and hydrogen distribution Journal of Geophysical Research E: Planets. 107. DOI: 10.1029/2000Je001430 |
0.53 |
|
| 2002 |
Chevrel SD, Pinet PC, Daydou Y, Maurice S, Lawrence DJ, Feldman WC, Lucey PG. Integration of the Clementine UV-VIS spectral reflectance data and the Lunar Prospector gamma-ray spectrometer data: A global-scale multielement analysis o the lunar surface using iron, titanium, and thorium abundances Journal of Geophysical Research E: Planets. 107: 15-1. DOI: 10.1029/2000Je001419 |
0.475 |
|
| 2002 |
Feldman WC, Gasnault O, Maurice S, Lawrence DJ, Elphic RC, Lucey PG, Binder AB. Global distribution of lunar composition: New results from Lunar Prospector Journal of Geophysical Research E: Planets. 107. |
0.464 |
|
| 2001 |
Gasnault O, Feldman WC, Maurice S, Genetay I, d'Uston C, Prettyman TH, Moore KR. Composition from fast neutrons: Application to the Moon Geophysical Research Letters. 28: 3797-3800. DOI: 10.1029/2001Gl013072 |
0.383 |
|
| 2000 |
Skoug RM, Feldman WC, Gosling JT, McComas DJ, Smith CW. Solar wind electron characteristics inside and outside coronal mass ejections Journal of Geophysical Research: Space Physics. 105: 23069-23084. DOI: 10.1029/2000Ja000017 |
0.325 |
|
| 2000 |
Feldman WC, Lawrence DJ, Elphic RC, Vaniman DT, Thomsen DR, Barraclough BL, Maurice S, Binder AB. Chemical information content of lunar thermal and epithermal neutrons Journal of Geophysical Research: Planets. 105: 20347-20363. DOI: 10.1029/1999Je001183 |
0.546 |
|
| 2000 |
Lawrence DJ, Feldman WC, Barraclough BL, Binder AB, Elphic RC, Maurice S, Miller MC, Prettyman TH. Thorium abundances on the lunar surface Journal of Geophysical Research: Planets. 105: 20307-20331. DOI: 10.1029/1999Je001177 |
0.557 |
|
| 2000 |
Elphic RC, Lawrence DJ, Feldman WC, Barraclough BL, Maurice S, Binder AB, Lucey PG. Lunar rare earth element distribution and ramifications for FeO and TiO2: Lunar Prospector neutron spectrometer observations Journal of Geophysical Research E: Planets. 105: 20333-20345. DOI: 10.1029/1999Je001176 |
0.59 |
|
| 2000 |
Maurice S, Feldman WC, Lawrence DJ, Elphic RC, Gasnault O, d'Uston C, Genetay I, Lucey PG. High-energy neutrons from the Moon Journal of Geophysical Research: Planets. 105: 20365-20375. DOI: 10.1029/1999Je001151 |
0.591 |
|
| 2000 |
Feldman WC, Lawrence DJ, Elphic RC, Barraclough BL, Maurice S, Genetay I, Binder AB. Polar hydrogen deposits on the Moon Journal of Geophysical Research. 105: 4175-4195. DOI: 10.1029/1999Je001129 |
0.565 |
|
| 2000 |
Gasnault O, d'Uston C, Feldman WC, Maurice S. Lunar fast neutron leakage flux calculation and its elemental abundance dependence Journal of Geophysical Research: Planets. 105: 4263-4271. DOI: 10.1029/1999Je001124 |
0.433 |
|
| 1999 |
Grappin R, Mangeney A, Schwartz SJ, Feldman WC. Contribution of intermittent temperature peaks to the generation of the solar wind flow Journal of Geophysical Research: Space Physics. 104: 17033-17043. DOI: 10.1029/1999Ja900181 |
0.31 |
|
| 1999 |
Lawrence DJ, Feldman WC, Barraclough BL, Binder AB, Elphic RC, Maurice S, Miller MC, Prettyman TH. High resolution measurements of absolute thorium abundances on the lunar surface Geophysical Research Letters. 26: 2681-2684. DOI: 10.1029/1999Gl008361 |
0.491 |
|
| 1999 |
Feldman W, Barraclough B, Fuller K, Lawrence D, Maurice S, Miller M, Prettyman T, Binder A. The Lunar Prospector gamma-ray and neutron spectrometers Nuclear Instruments and Methods in Physics Research Section a: Accelerators, Spectrometers, Detectors and Associated Equipment. 422: 562-566. DOI: 10.1016/S0168-9002(98)00934-6 |
0.482 |
|
| 1998 |
Lawrence DJ, Feldman WC, Barraclough BL, Binder AB, Elphic RC, Maurice S, Thomsen DR. Global elemental maps of the moon: the Lunar Prospector gamma-Ray spectrometer. Science (New York, N.Y.). 281: 1484-9. PMID 9727970 DOI: 10.1126/Science.281.5382.1484 |
0.545 |
|
| 1997 |
Feldman WC, Barraclough BL, Hansen CJ, Sprague AL. The neutron signature of Mercury's volatile polar deposits Journal of Geophysical Research: Planets. 102: 25565-25574. DOI: 10.1029/97Je02353 |
0.364 |
|
| 1996 |
Neugebauer M, Goldstein BE, Smith EJ, Feldman WC. Ulysses observations of differential alpha-proton streaming in the solar wind Journal of Geophysical Research: Space Physics. 101: 17047-17055. DOI: 10.1029/96Ja01406 |
0.376 |
|
| 1996 |
Ho CM, Tsurutani BT, Smith EJ, Feldman WC. Properties of slow-mode shocks in the distant (>200RE) geomagnetic tail Journal of Geophysical Research: Space Physics. 101: 15277-15286. DOI: 10.1029/96Ja00545 |
0.306 |
|
| 1996 |
Tsurutani BT, Ho CM, Arballo JK, Smith EJ, Goldstein BE, Neugebauer M, Balogh A, Feldman WC. Interplanetary discontinuities and Alfvén waves at high heliographic latitudes: Ulysses Journal of Geophysical Research: Space Physics. 101: 11027-11038. DOI: 10.1029/95Ja03479 |
0.308 |
|
| 1995 |
Feldman WC, Hones EW, Barraclough BL, Reeves GD, Belian RD, Cayton TE, Lee P, Lepping RP, Trombka JI, Starr R, Moersch J, Squyres SW, Rich FJ. Possible conjugate reconnection at the high-latitude magnetopause Journal of Geophysical Research. 100: 14913. DOI: 10.1029/95Ja01217 |
0.349 |
|
| 1995 |
Hammond CM, Feldman WC, Phillips JL, Goldstein BE, Balogh A. Solar wind double ion beams and the heliospheric current sheet Journal of Geophysical Research. 100: 7881. DOI: 10.1029/94Ja03304 |
0.31 |
|
| 1994 |
Gary SP, Scime EE, Phillips JL, Feldman WC. The whistler heat flux instability: Threshold conditions in the solar wind Journal of Geophysical Research. 99: 23391. DOI: 10.1029/94Ja02067 |
0.322 |
|
| 1994 |
Angelopoulos V, Kennel CF, Coroniti FV, Pellat R, Kivelson MG, Walker RJ, Russell CT, Baumjohann W, Feldman WC, Gosling JT. Statistical characteristics of bursty bulk flow events Journal of Geophysical Research. 99: 21257. DOI: 10.1029/94Ja01263 |
0.368 |
|
| 1994 |
Neugebauer M, Goldstein BE, Bame SJ, Feldman WC. Ulysses near-ecliptic observations of differential flow between protons and alphas in the solar wind Journal of Geophysical Research. 99: 2505. DOI: 10.1029/93Ja02615 |
0.394 |
|
| 1993 |
Feldman WC, Boynton WV, Jakosky BM, Mellon MT. Redistribution of subsurface neutrons caused by ground ice on Mars Journal of Geophysical Research. 98: 20855. DOI: 10.1029/93Je02325 |
0.339 |
|
| 1993 |
Feldman WC, Gosling JT, McComas DJ, Phillips JL. Evidence for ion jets in the high-speed solar wind Journal of Geophysical Research: Space Physics. 98: 5593-5605. DOI: 10.1029/92Ja02260 |
0.374 |
|
| 1989 |
Feldman WC, Drake DM, O'Dell RD, Brinkley FW, Anderson RC. Gravitational effects on planetary neutron flux spectra Journal of Geophysical Research. 94: 513. DOI: 10.1029/Jb094Ib01P00513 |
0.4 |
|
| 1987 |
Gosling JT, Baker DN, Bame SJ, Feldman WC, Zwickl RD, Smith EJ. Bidirectional solar wind electron heat flux events Journal of Geophysical Research. 92: 8519. DOI: 10.1029/Ja092Ia08P08519 |
0.342 |
|
| 1984 |
Kennel CF, Edmiston JP, Scarf FL, Coroniti FV, Russell CT, Smith EJ, Tsurutani BT, Scudder JD, Feldman WC, Anderson RR, Mozer FS, Temerin M. STRUCTURE OF THE NOVEMBER 12, 1978, QUASI-PARALLEL INTERPLANETARY SHOCK Journal of Geophysical Research. 89: 5436-5452. DOI: 10.1029/Ja089Ia07P05436 |
0.323 |
|
| 1984 |
Kennel CF, Scarf FL, Coroniti FV, Russell CT, Wenzel KP, Sanderson TR, Van Nes P, Feldman WC, Parks GK, Smith EJ, Tsurutani BT, Mozer FS, Temerin M, Anderson RR, Scudder JD. PLASMA AND ENERGETIC PARTICLE STRUCTURE UPSTREAM OF A QUASI-PARALLEL INTERPLANETARY SHOCK Journal of Geophysical Research. 89: 5419-5435. DOI: 10.1029/Ja089Ia07P05419 |
0.307 |
|
| 1984 |
Gosling JT, Bame SJ, Feldman WC, Paschmann G, Sckopke N, Russell CT. Suprathermal ions upstream from interplanetary shocks Journal of Geophysical Research. 89: 5409. DOI: 10.1029/Ja089Ia07P05409 |
0.344 |
|
| 1984 |
Baker DN, Bame SJ, Belian RD, Feldman WC, Gosling JT, Higbie PR, Hones EW, McComas DJ, Zwickl RD. Correlated dynamical changes in the near-Earth and distant magnetotail regions: ISEE 3 Journal of Geophysical Research. 89: 3855. DOI: 10.1029/Ja089Ia06P03855 |
0.349 |
|
| 1984 |
Smith EJ, Slavin JA, Tsurutani BT, Feldman WC, Bame SJ. Slow mode shocks in the Earth' magnetotail: ISEE-3 Geophysical Research Letters. 11: 1054-1057. DOI: 10.1029/Gl011I010P01054 |
0.314 |
|
| 1984 |
Scarf FL, Coroniti FV, Kennel CF, Smith EJ, Slavin JA, Tsurutani BT, Bame SJ, Feldman WC. Plasma wave spectra near slow mode shocks in the distant magnetotail Geophysical Research Letters. 11: 1050-1053. DOI: 10.1029/Gl011I010P01050 |
0.306 |
|
| 1983 |
Lemons DS, Feldman WC. Collisional modification to the exospheric theory of solar wind halo electron pitch angle distributions Journal of Geophysical Research. 88: 6881. DOI: 10.1029/Ja088Ia09P06881 |
0.329 |
|
| 1983 |
Sentman DD, Thomsen MF, Gary SP, Feldman WC, Hoppe MM. The oblique whistler instability in the Earth's foreshock Journal of Geophysical Research. 88: 2048. DOI: 10.1029/Ja088Ia03P02048 |
0.327 |
|
| 1983 |
Feldman WC, Anderson RC, Bame SJ, Gary SP, Gosling JT, McComas DJ, Thomsen MF, Paschmann G, Hoppe MM. Electron velocity distributions near the Earth's bow shock Journal of Geophysical Research. 88: 96. DOI: 10.1029/Ja088Ia01P00096 |
0.336 |
|
| 1983 |
Thomsen MF, Gosling JT, Bame SJ, Feldman WC, Paschmann G, Sckopke N. Field-aligned ion beams upstream of the Earth's bow shock: Evidence for a magnetosheath source Geophysical Research Letters. 10: 1207-1210. DOI: 10.1029/Gl010I012P01207 |
0.333 |
|
| 1982 |
Zwickl RD, Asbridge JR, Bame SJ, Feldman WC, Gosling JT. He+ and other unusual ions in the solar wind: A systematic search covering 1972–1980 Journal of Geophysical Research. 87: 7379-7388. DOI: 10.1029/Ja087Ia09P07379 |
0.352 |
|
| 1982 |
Borrini G, Gosling JT, Bame SJ, Feldman WC. Helium abundance enhancements in the solar wind Journal of Geophysical Research. 87: 7370. DOI: 10.1029/Ja087Ia09P07370 |
0.384 |
|
| 1982 |
Feldman WC, Asbridge JR, Bame SJ, Gosling JT. Quantitative tests of a steady state theory of solar wind electrons Journal of Geophysical Research. 87: 7355. DOI: 10.1029/Ja087Ia09P07355 |
0.319 |
|
| 1982 |
Borrini G, Gosling JT, Bame SJ, Feldman WC. An analysis of shock wave disturbances observed at 1 AU from 1971 through 1978 Journal of Geophysical Research. 87: 4365-4373. DOI: 10.1029/Ja087Ia06P04365 |
0.343 |
|
| 1982 |
Gosling JT, Asbridge JR, Bame SJ, Feldman WC, Paschmann G, Sckopke N, Russell CT. Evidence for quasi-stationary reconnection at the dayside magnetopause Journal of Geophysical Research. 87: 2147-2158. DOI: 10.1029/Ja087Ia04P02147 |
0.36 |
|
| 1982 |
Feldman WC, Anderson RC, Asbridge JR, Bame SJ, Gosling JT, Zwickl RD. Plasma electron signature of magnetic connection to the Earth's bow shock: ISEE 3 Journal of Geophysical Research. 87: 632. DOI: 10.1029/Ja087Ia02P00632 |
0.356 |
|
| 1982 |
Gosling JT, Asbridge JR, Bame SJ, Feldman WC, Zwickl RD, Paschmann G, Sckopke N, Russell CT. A Sub-Alfvénic solar wind: Interplanetary and magnetosheath observations Journal of Geophysical Research. 87: 239. DOI: 10.1029/Ja087Ia01P00239 |
0.334 |
|
| 1982 |
Gosling JT, Thomsen MF, Bame SJ, Feldman WC, Paschmann G, Sckopke N. Evidence for specularly reflected ions upstream from the quasi-parallel bow shock Geophysical Research Letters. 9: 1333-1336. DOI: 10.1029/Gl009I012P01333 |
0.33 |
|
| 1981 |
Feldman WC, Asbridge JR, Bame SJ, Fenimore EE, Gosling JT. The solar origins of solar wind interstream flows: Near‐equatorial coronal streamers Journal of Geophysical Research. 86: 5408-5416. DOI: 10.1029/Ja086Ia07P05408 |
0.357 |
|
| 1981 |
Schwartz SJ, Feldman WC, Gary SP. Wave-electron interactions in the high speed solar wind Journal of Geophysical Research: Space Physics. 86: 4574-4578. DOI: 10.1029/Ja086Ia06P04574 |
0.307 |
|
| 1981 |
Borrini G, Gosling JT, Bame SJ, Feldman WC, Wilcox JM. Solar wind helium and hydrogen structure near the heliospheric current sheet: A signal of coronal streamers at 1 AU Journal of Geophysical Research: Space Physics. 86: 4565-4573. DOI: 10.1029/Ja086Ia06P04565 |
0.375 |
|
| 1981 |
Gosling JT, Asbridge JR, Bame SJ, Feldman WC, Zwickl RD, Paschmann G, Sckopke N, Hynds RJ. Interplanetary ions during an energetic storm particle event: The distribution function from solar wind thermal energies to 1.6 MeV Journal of Geophysical Research. 86: 547. DOI: 10.1029/Ja086Ia02P00547 |
0.355 |
|
| 1981 |
Schwartz SJ, Feldman WC, Gary SP. The source of proton anisotropy in the high-speed solar wind Journal of Geophysical Research. 86: 541. DOI: 10.1029/Ja086Ia02P00541 |
0.344 |
|
| 1981 |
Baker DN, Hones EW, Payne JB, Feldman WC. A high time resolution study of interplanetary parameter correlations with AE Geophysical Research Letters. 8: 179-182. DOI: 10.1029/Gl008I002P00179 |
0.325 |
|
| 1981 |
Bame SJ, Asbridge JR, Feldman WC, Gosling JT, Zwickl RD. Bi-directional streaming of solar wind electrons >80 eV: ISEE evidence for a closed-field structure within the driver gas of an interplanetary shock Geophysical Research Letters. 8: 173-176. DOI: 10.1029/Gl008I002P00173 |
0.333 |
|
| 1980 |
Gosling J, Asbridge J, Bame S, Feldman W, Zwickl R. Observations of large fluxes of He+in the solar wind following an interplanetary shock Journal of Geophysical Research. 85: 3431. DOI: 10.1029/Ja085Ia07P03431 |
0.385 |
|
| 1980 |
Bame S, Asbridge J, Feldman W, Gosling J, Paschmann G, Sckopke N. Deceleration of the solar wind upstream from the Earth's bow shock and the origin of diffuse upstream ions Journal of Geophysical Research. 85: 2981. DOI: 10.1029/Ja085Ia06P02981 |
0.331 |
|
| 1980 |
Gosling J, Asbridge J, Bame S, Feldman W, Paschmann G, Sckopke N. Solar wind ions accelerated to 40 keV by shock wave disturbances Journal of Geophysical Research. 85: 744. DOI: 10.1029/Ja085Ia02P00744 |
0.356 |
|
| 1979 |
Feldman WC, Asbridge JR, Bame SJ, Gosling JT. Long-term solar wind electron variations between 1971 and 1978 Journal of Geophysical Research. 84: 7371. DOI: 10.1029/Ja084Ia12P07371 |
0.346 |
|
| 1979 |
Feldman W, Asbridge J, Bame S, Gosling J, Lemons D. A possible closure relation for heat transport in the solar wind Journal of Geophysical Research. 84: 6621. DOI: 10.1029/Ja084Ia11P06621 |
0.307 |
|
| 1979 |
Feldman W, Asbridge J, Bame S, Gosling J, Lemons D. The core electron temperature profile between 0.5 and 1.0 AU in the steady-state high speed solar wind Journal of Geophysical Research: Space Physics. 84: 4463-4467. DOI: 10.1029/Ja084Ia08P04463 |
0.33 |
|
| 1979 |
Lemons DS, Asbridge JR, Bame SJ, Feldman WC, Gary SP, Gosling JT. The source of electrostatic fluctuations in the solar wind Journal of Geophysical Research. 84: 2135. DOI: 10.1029/Ja084Ia05P02135 |
0.332 |
|
| 1979 |
Abraham-Shrauner B, Asbridge JR, Bame SJ, Feldman WC. Proton-driven electromagnetic instabilities in high-speed solar wind streams Journal of Geophysical Research. 84: 553. DOI: 10.1029/Ja084Ia02P00553 |
0.352 |
|
| 1978 |
Feldman WC, Asbridge JR, Bame SJ, Gosling JT, Lemons DS. Characteristic electron variations across simple high-speed solar wind streams Journal of Geophysical Research. 83: 5285. DOI: 10.1029/Ja083Ia11P05285 |
0.349 |
|
| 1978 |
Fenimore EE, Asbridge JR, Bame SJ, Feldman WC, Gosling JT. The power spectrum of the solar wind speed for periods greater than 10 days Journal of Geophysical Research. 83: 4353. DOI: 10.1029/Ja083Ia09P04353 |
0.342 |
|
| 1978 |
Feldman WC, Asbridge JR, Bame SJ, Gosling JT. Long-term variations of selected solar wind properties: Imp 6, 7, and 8 results Journal of Geophysical Research. 83: 2177. DOI: 10.1029/Ja083Ia05P02177 |
0.387 |
|
| 1978 |
Gosling JT, Asbridge JR, Bame SJ, Feldman WC. Solar wind stream interfaces Journal of Geophysical Research. 83: 1401-1412. DOI: 10.1029/Ja083Ia04P01401 |
0.345 |
|
| 1978 |
Schwenn R, Montgomery MD, Rosenbauer H, Miggenrieder H, Mühlhäuser KH, Bame SJ, Feldman WC, Hansen RT. Direct observation of the latitudinal extent of a high‐speed stream in the solar wind Journal of Geophysical Research. 83: 1011-1017. DOI: 10.1029/Ja083Ia03P01011 |
0.332 |
|
| 1977 |
Asbridge JR, Bame SJ, Feldman WC, Gosling JT, Ness NF. On the alignment of plasma anisotropies and the magnetic field direction in the solar wind Journal of Geophysical Research. 82: 5555-5562. DOI: 10.1029/Ja082I035P05555 |
0.322 |
|
| 1977 |
Gosling JT, Hildner E, Asbridge JR, Bame SJ, Feldman WC. Noncompressive density enhancements in the solar wind Journal of Geophysical Research. 82: 5005-5010. DOI: 10.1029/Ja082I032P05005 |
0.369 |
|
| 1977 |
Gosling JT, Asbridge JR, Bame SJ, Feldman WC. Preferred solar wind emitting longitudes on the sun Journal of Geophysical Research. 82: 2371-2376. DOI: 10.1029/Ja082I016P02371 |
0.33 |
|
| 1977 |
Bame SJ, Asbridge JR, Feldman WC, Gosling JT. Evidence for a structure‐free state at high solar wind speeds Journal of Geophysical Research. 82: 1487-1492. DOI: 10.1029/Ja082I010P01487 |
0.341 |
|
| 1977 |
Feldman WC. Implications of Saito's Coronal Density Model on the polar solar wind flow and heavy ion abundances Journal of Geophysical Research. 82: 667-673. DOI: 10.1029/Ja082I004P00667 |
0.387 |
|
| 1977 |
Bame SJ, Asbridge JR, Feldman WC, Felthauser HE, Gosling JT. A search for a general gradient in the solar wind speed at low solar latitudes Journal of Geophysical Research. 82: 173-176. DOI: 10.1029/Ja082I001P00173 |
0.347 |
|
| 1976 |
Bame SJ, Asbridge JR, Feldman WC, Gosling JT. Solar cycle evolution of high-speed solar wind streams The Astrophysical Journal. 207: 977. DOI: 10.1086/154566 |
0.358 |
|
| 1976 |
Gosling JT, Asbridge JR, Bame SJ, Feldman WC. Solar wind speed variations: 1962-1974 Journal of Geophysical Research. 81: 5061-5070. DOI: 10.1029/Ja081I028P05061 |
0.372 |
|
| 1976 |
Feldman WC, Asbridge JR, Bame SJ, Gosling JT. High-speed solar wind flow parameters at 1 AU Journal of Geophysical Research. 81: 5054-5060. DOI: 10.1029/Ja081I028P05054 |
0.356 |
|
| 1974 |
Montgomery MD, Asbridge JR, Bame SJ, Feldman WC. Solar wind electron temperature depressions following some interplanetary shock waves: Evidence for magnetic merging? Journal of Geophysical Research. 79: 3103-3110. DOI: 10.1029/Ja079I022P03103 |
0.327 |
|
| 1974 |
Feldman WC, Asbridge JR, Bame SJ. Bow shock perturbation of the upstream solar wind proton component Journal of Geophysical Research. 79: 2773-2781. DOI: 10.1029/Ja079I019P02773 |
0.323 |
|
| 1974 |
Feldman WC, Asbridge JR, Bame SJ. The solar wind He2+to H+temperature ratio Journal of Geophysical Research. 79: 2319-2323. DOI: 10.1029/Ja079I016P02319 |
0.365 |
|
| 1973 |
Feldman WC, Asbridge JR, Bame SJ, Montgomery MD. On the origin of solar wind proton thermal anisotropy Journal of Geophysical Research. 78: 6451-6468. DOI: 10.1029/Ja078I028P06451 |
0.383 |
|
| 1973 |
Feldman WC, Asbridge JR, Bame SJ, Montgomery MD. Double ion streams in the solar wind Journal of Geophysical Research. 78: 2017-2027. DOI: 10.1029/Ja078I013P02017 |
0.336 |
|
| Show low-probability matches. |