Search Results - "Steffl, Andrew J"

Io plasma torus ion composition: Voyager, Galileo, and Cassini by Nerney, Edward G., Bagenal, Fran, Steffl, Andrew J.

“…The Io torus produces ultraviolet emissions diagnostic of plasma conditions. We revisit data sets obtained by the Voyager 1, Galileo, and Cassini missions at…”
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Far-ultraviolet reflectance properties of the Moon's permanently shadowed regions by Gladstone, G. Randall, Retherford, Kurt D., Egan, Anthony F., Kaufmann, David E., Miles, Paul F., Parker, Joel W., Horvath, David, Rojas, Paul M., Versteeg, Maarten H., Davis, Michael W., Greathouse, Thomas K., Slater, David C., Mukherjee, Joey, Steffl, Andrew J., Feldman, Paul D., Hurley, Dana M., Pryor, Wayne R., Hendrix, Amanda R., Mazarico, Erwan, Stern, S. Alan

“…Although of great interest for science and resource utilization, the Moon's permanently shadowed regions (PSRs) near each pole present difficult targets for…”
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LRO-LAMP Observations of the LCROSS Impact Plume by Gladstone, G. Randall, Hurley, Dana M, Retherford, Kurt D, Feldman, Paul D, Pryor, Wayne R, Chaufray, Jean-Yves, Versteeg, Maarten, Greathouse, Thomas K, Steffl, Andrew J, Throop, Henry, Parker, Joel Wm, Kaufmann, David E, Egan, Anthony F, Davis, Michael W, Slater, David C, Mukherjee, Joey, Miles, Paul F, Hendrix, Amanda R, Colaprete, Anthony, Stern, S. Alan

“…On 9 October 2009, the Lunar Crater Observation and Sensing Satellite (LCROSS) sent a kinetic impactor to strike Cabeus crater, on a mission to search for…”
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The lunar far-UV albedo: Indicator of hydration and weathering by Hendrix, Amanda R., Retherford, Kurt D., Randall Gladstone, G., Hurley, Dana M., Feldman, Paul D., Egan, Anthony F., Kaufmann, David E., Miles, Paul F., Parker, Joel W., Horvath, David, Rojas, Paul M., Versteeg, Maarten H., Davis, Michael W., Greathouse, Thomas K., Mukherjee, Joey, Steffl, Andrew J., Pryor, Wayne R., Stern, S. Alan

“…We present an analysis of Lunar Reconnaissance Orbiter (LRO) Lyman Alpha Mapping Project (LAMP) measurements of the dayside lunar surface at far‐ultraviolet…”
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Rosetta-Alice observations of exospheric hydrogen and oxygen on Mars by Feldman, Paul D., Steffl, Andrew J., Parker, Joel Wm, A’Hearn, Michael F., Bertaux, Jean-Loup, Alan Stern, S., Weaver, Harold A., Slater, David C., Versteeg, Maarten, Throop, Henry B., Cunningham, Nathaniel J., Feaga, Lori M.

“…► Rosetta fly-by of Mars in 2007 provides new UV data on H and O in Mars’ exosphere. ► H observed out to 30,000 km planetocentric distance. ► H spatial…”
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Structure and composition of Pluto's atmosphere from the New Horizons solar ultraviolet occultation by Young, Leslie A., Kammer, Joshua A., Steffl, Andrew J., Gladstone, G. Randall, Summers, Michael E., Strobel, Darrell F., Hinson, David P., Stern, S. Alan, Weaver, Harold A., Olkin, Catherine B., Ennico, Kimberly, McComas, David J., Cheng, Andrew F., Gao, Peter, Lavvas, Panayotis, Linscott, Ivan R., Wong, Michael L., Yung, Yuk L., Cunningham, Nathanial, Davis, Michael, Parker, Joel Wm, Schindhelm, Eric, Siegmund, Oswald H.W., Stone, John, Retherford, Kurt, Versteeg, Maarten

“…•The Alice instrument on New Horizons measured a UV solar occultation by Pluto's atmosphere in 2015.•Densities were derived for N2, CH4, C2H2, C2H4, C2H6, and…”
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Plasma conditions at Europa’s orbit by Bagenal, Fran, Sidrow, Evan, Wilson, Robert J., Cassidy, Timothy A., Dols, Vincent, Crary, Frank J., Steffl, Andrew J., Delamere, Peter A., Kurth, William S., Paterson, William R.

“…•Summary of plasma conditions at Europa’s orbit.•Plasma conditions show wide range of variability.•A rough anti-correlation of plasma density and ion…”
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Jupiter's Nightside Airglow and Aurora by Gladstone, G. Randall, Stern, S. Alan, Slater, David C., Versteeg, Maarten, Davis, Michael W., Retherford, Kurt D., Young, Leslie A., Steffl, Andrew J., Throop, Henry, Parker, Joel Wm, Weaver, Harold A., Cheng, Andrew F., Orton, Glenn S., Clarke, John T., Nichols, Jonathan D.

“…Observations of Jupiter's nightside airglow (nightglow) and aurora obtained during the flyby of the New Horizons spacecraft show an unexpected lack of…”
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The Lyman‐α Sky Background as Observed by New Horizons by Gladstone, G. Randall, Pryor, W. R., Stern, S. Alan, Ennico, Kimberly, Olkin, Catherine B., Spencer, John R., Weaver, Harold A., Young, Leslie A., Bagenal, Fran, Cheng, Andrew F., Cunningham, Nathaniel J., Elliott, Heather A., Greathouse, Thomas K., Hinson, David P., Kammer, Joshua A., Linscott, Ivan R., Parker, Joel Wm, Retherford, Kurt D., Steffl, Andrew J., Strobel, Darrell F., Summers, Michael E., Throop, Henry, Versteeg, Maarten H., Davis, Michael W.

“…Recent observations of interplanetary medium atomic hydrogen Lyman‐α emission in the outer solar system, made with the Alice ultraviolet spectrograph on New…”
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A New Facility for Airborne Solar Astronomy: NASA's WB-57 at the 2017 Total Solar Eclipse by Caspi, Amir, Seaton, Daniel B., Tsang, Constantine C. C., DeForest, Craig E., Bryans, Paul, DeLuca, Edward E., Tomczyk, Steven, Burkepile, Joan T., Casey, Thomas "Tony", Collier, John, Darrow, Donald "DD", Del Rosso, Dominic, Durda, Daniel D., Gallagher, Peter T., Golub, Leon, Jacyna, Matthew, Johnson, David "DJ", Judge, Philip G., Klemm, Cary "Diddle", Laurent, Glenn T., Lewis, Johanna, Mallini, Charles J., Parent, Thomas "Duster", Propp, Timothy, Steffl, Andrew J., Warner, Jeff, West, Matthew J., Wiseman, John, Yates, Mallory, Zhukov, Andrei N.

“…NASA's WB-57 High Altitude Research Program provides a deployable, mobile, and stratospheric platform for scientific research. Airborne platforms are of…”
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The New Horizons Extended Mission Target: Arrokoth Search and Discovery by Buie, Marc W., Spencer, John R., Porter, Simon B., Benecchi, Susan D., Parker, Alex H., Stern, S. Alan, Belton, Michael, Binzel, Richard P., Borncamp, David, DeMeo, Francesca, Fabbro, S., Fuentes, Cesar, Furusawa, Hisanori, Fuse, Tetsuharu, Gay, Pamela L., Gwyn, Stephen, Holman, Matthew J., Karoji, H., Kavelaars, J. J., Kinoshita, Daisuke, Miyazaki, Satoshi, Mountain, Matt, Noll, Keith S., Osip, David J., Petit, Jean-Marc, Reid, Neill I., Sheppard, Scott S., Showalter, Mark, Steffl, Andrew J., Sterner, Ray E., Tajitsu, Akito, Tholen, David J., Trilling, David E., Weaver, Harold A., Verbiscer, Anne J., Wasserman, Lawrence H., Yamashita, Takuji, Yanagisawa, Toshifumi, Yoshida, Fumi, Zangari, Amanda M.

“…Following the Pluto flyby of the New Horizons spacecraft, the mission provided a unique opportunity to explore the Kuiper Belt in situ. The possibility existed…”
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Cassini UVIS observations of the Io plasma torus: II. Radial variations by Steffl, Andrew J., Bagenal, Fran, Stewart, A.Ian F.

“…On January 14, 2001, shortly after the Cassini spacecraft's closest approach to Jupiter, the Ultraviolet Imaging Spectrometer (UVIS) made a radial scan through…”
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Modeling of the vapor release from the LCROSS impact: 2. Observations from LAMP by Hurley, Dana M., Gladstone, G. Randall, Stern, S. Alan, Retherford, Kurt D., Feldman, Paul D., Pryor, Wayne, Egan, Anthony F., Greathouse, Thomas K., Kaufmann, David E., Steffl, Andrew J., Parker, Joel William, Miles, Paul F., Horvath, David, Davis, Michael W., Versteeg, Maarten H., Slater, David C., Hendrix, Amanda R., Hibbitts, Charles A., Ernst, Carolyn M., Vervack Jr, Ronald J., Grieves, Gregory A.

“…Using a Monte Carlo model, we analyze the evolution of the vapor plume emanating from the Lunar Crater Observation and Sensing Satellite (LCROSS) impact into…”
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Cassini UVIS observations of the Io plasma torus: I. Initial results by Steffl, Andrew J., Stewart, A.Ian F., Bagenal, Fran

“…During the Cassini spacecraft's flyby of Jupiter (October, 2000–March, 2001), the Ultraviolet Imaging Spectrograph (UVIS) produced an extensive dataset…”
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Cassini UVIS observations of Jupiter's auroral variability by Pryor, Wayne R., Stewart, A. Ian F., Esposito, Larry W., McClintock, William E., Colwell, Joshua E., Jouchoux, Alain J., Steffl, Andrew J., Shemansky, Donald E., Ajello, Joseph M., West, Robert A., Hansen, Candace J., Tsurutani, Bruce T., Kurth, William S., Hospodarsky, George B., Gurnett, Donald A., Hansen, Kenneth C., Waite, J. Hunter, Crary, Frank J., Young, David T., Krupp, Norbert, Clarke, John T., Grodent, Denis, Dougherty, Michele K.

“…The Cassini spacecraft Ultraviolet Imaging Spectrograph (UVIS) obtained observations of Jupiter's auroral emissions in H 2 band systems and H Lyman- α from day…”
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Evidence of sub-surface energy storage in comet 67P from the outburst of 2016 July 03 by Agarwal, J., Della Corte, V., Feldman, P. D., Geiger, B., Merouane, S., Bertini, I., Bodewits, D., Fornasier, S., Grün, E., Hasselmann, P., Hilchenbach, M., Höfner, S., Ivanovski, S., Kolokolova, L., Pajola, M., Rotundi, A., Sierks, H., Steffl, A. J., Thomas, N., A'Hearn, M. F., Barbieri, C., Barucci, M. A., Bertaux, J.-L., Boudreault, S., Cremonese, G., Da Deppo, V., Davidsson, B., Debei, S., De Cecco, M., Deller, J. F., Feaga, L. M., Fischer, H., Fulle, M., Gicquel, A., Groussin, O., Güttler, C., Gutiérrez, P. J., Hofmann, M., Hornung, K., Hviid, S. F., Ip, W.-H., Jorda, L., Keller, H. U., Kissel, J., Knollenberg, J., Koch, A., Koschny, D., Kramm, J.-R., Kührt, E., Küppers, M., Lamy, P. L., Langevin, Y., Lara, L. M., Lazzarin, M., Lin, Z.-Y., Lopez Moreno, J. J., Lowry, S. C., Marzari, F., Mottola, S., Naletto, G., Oklay, N., Parker, J. Wm, Rodrigo, R., Rynö, J., Shi, X., Stenzel, O., Tubiana, C., Vincent, J.-B., Weaver, H. A., Zaprudin, B.

“…Abstract On 2016 July 03, several instruments onboard ESA's Rosetta spacecraft detected signs of an outburst event on comet 67P, at a heliocentric distance of…”
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Transient internally driven aurora at Jupiter discovered by Hisaki and the Hubble Space Telescope by Kimura, T., Badman, S. V., Tao, C., Yoshioka, K., Murakami, G., Yamazaki, A., Tsuchiya, F., Bonfond, B., Steffl, A. J., Masters, A., Kasahara, S., Hasegawa, H., Yoshikawa, I., Fujimoto, M., Clarke, J. T.

“…Jupiter's auroral emissions reveal energy transport and dissipation through the planet's giant magnetosphere. While the main auroral emission is internally…”
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H2O and O2 absorption in the coma of comet 67P/Churyumov–Gerasimenko measured by the Alice far-ultraviolet spectrograph on Rosetta by Keeney, Brian A., Stern, S. Alan, A’Hearn, Michael F., Bertaux, Jean-Loup, Feaga, Lori M., Feldman, Paul D., Medina, Richard A., Parker, Joel Wm, Pineau, Jon P., Schindhelm, Eric, Steffl, Andrew J., Versteeg, M., Weaver, Harold A.

“…Abstract We have detected H2O and O2 absorption against the far-UV continuum of stars located on lines of sight near the nucleus of Comet…”
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Rosetta Alice/VIRTIS observations of the water vapour UV electroglow emissions around comet 67P/Churyumov–Gerasimenko by Chaufray, J.-Y., Bockelée-Morvan, D., Bertaux, J.-L., Erard, S., Feldman, P. D., Capaccioni, F., Schindhelm, E., Leyrat, C., Parker, J., Filacchione, G., A’Hearn, M. F., Feaga, L. M., Noonan, J., Keeney, B., Steffl, A. J., Stern, S. A., Weaver, H. A., Broiles, T., Burch, J., Clark, G., Samara, M.

“…Abstract Several UV emission lines of the coma of 67P/Churyumov–Gerasimenko have been observed by Alice/Rosetta before the 67P/CG perihelion. The H and O…”
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Candidate Distant Trans-Neptunian Objects Detected by the New Horizons Subaru TNO Survey by Fraser, Wesley C., Porter, Simon B., Peltier, Lowell, Kavelaars, JJ, Verbiscer, Anne J., Buie, Marc W., Stern, S. Alan, Spencer, John R., Benecchi, Susan D., Terai, Tsuyoshi, Ito, Takashi, Yoshida, Fumi, Gerdes, David W., Napier, Kevin J., Lin, Hsing Wen, Gwyn, Stephen D. J., Smotherman, Hayden, Fabbro, Sebastien, Singer, Kelsi N., Alexander, Amanda M., Arimatsu, Ko, Banks, Maria E., Bray, Veronica J., Ramy El-Maarry, Mohamed, Ferrell, Chelsea L., Fuse, Tetsuharu, Glass, Florian, Holt, Timothy R., Hong, Peng, Ishimaru, Ryo, Johnson, Perianne E., Lauer, Tod R., Leiva, Rodrigo, S. Lykawka, Patryk, Marschall, Raphael, Núñez, Jorge I., Postman, Marc, Quirico, Eric, Rhoden, Alyssa R., Simpson, Anna M., Schenk, Paul, Skrutskie, Michael F., Steffl, Andrew J., Throop, Henry

“…We report the detection of 239 trans-Neptunian objects discovered through the ongoing New Horizons survey for distant minor bodies being performed with the…”
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