Search

Your search keyword '"Ebert, Robert"' showing total 336 results
Start Over Author "Ebert, Robert"
336 results on '"Ebert, Robert"'

1. CME Deflection and East-West Asymmetry of ESP Intensity in Solar Cycles 23 and 24

Author

Dueñas, Adolfo Santa Fe, Ebert, Robert W., Li, Gang, Ding, Zheyi, Dayeh, Maher A., Desai, Mihir I., and Jian, Lan K.

Subjects
Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Earth and Planetary Astrophysics, Astrophysics - High Energy Astrophysical Phenomena, Physics - Plasma Physics, Physics - Space Physics
Abstract

We investigate the East-West asymmetry in energetic storm particle (ESP) heavy ion intensities at interplanetary shocks driven by coronal mass ejections (CMEs) during solar cycles (SCs) 23 and 24. We use observations from NASA's ACE and STEREO missions of helium (He), oxygen (O), and iron (Fe) intensities from ~0.13 to 3 MeV/nucleon. We examine the longitudinal distribution of ESP intensities and the correlation of ESP intensities with the near-Sun CME speed and the average transit CME speed for eastern and western events. We observed an East-West asymmetry reversal of ESP heavy ion intensities from SC 23 to 24. We have determined that this change in asymmetry is caused by a shift in the heliolongitude distribution of the CME speed ratio (the ratio of CME near-Sun speed to CME average transit speed) from west to east.

Published
2024

2. The East-West Asymmetry of Particle Intensity in Energetic Storm Particle Events

Author

Ding, Zheyi, Li, Gang, Dueñas, Adolfo Santa Fe, Ebert, Robert W., Wijsen, Nicolas, and Poedts, Stefaan

Subjects
Astrophysics - Solar and Stellar Astrophysics, Physics - Plasma Physics, Physics - Space Physics
Abstract

We examine the East-West asymmetry of the peak intensity in energetic storm particle (ESP) events using the improved Particle Acceleration and Transport in the Heliosphere (iPATH) model. We find that injection efficiency peaks east of the nose of coronal mass ejection shock where the shock exhibits a quasi-parallel geometry. We show that the peak intensity at the eastern flank is generally larger than that at the western flank and it positively correlates with the injection efficiency. We also examine this asymmetry for heavy ions, which depends sensitively on the ion energy. Comparison between the modelling results with the measurements of ESP events at 1 au shows a reasonable agreement. We suggest that the injection efficiency can be a primary factor leading to the East-West asymmetry of the peak intensity in ESP events. Additionally, the charge-to-mass (Q/A) dependence of the maximum particle energy affects this asymmetry for heavy ions., Comment: Accepted for publication in JGR: space physics. 19 pages, 8 figures

Published
2023
Full Text
View/download PDF

3. Statistical Study and Live Catalogue of Multi-Spacecraft 3He-Rich Time Periods over Solar Cycles 23, 24, and 25

Author

Hart, Samuel T., Dayeh, Maher A., Bučík, Radoslav, Desai, Mihir I., Ebert, Robert W., Ho, George C., Li, Gang, and Mason, Glenn M.

Subjects
Astrophysics - Solar and Stellar Astrophysics, Physics - Space Physics
Abstract

Using ion measurements from Ultra-Low-Energy Isotope Spectrometer (ULEIS) observations onboard Advanced Composition Explorer (ACE) and Solar Isotope Spectrometer (SIS) observations onboard the Solar Terrestrial Observatory (STEREO)-A and STEREO-B spacecraft, we have identified 854 3He-rich time periods between 1997 September and 2021 March. We include all event types with observed 3He enhancements such as corotating interaction regions (CIRs), gradual solar energetic particle (SEP) events, interplanetary shocks, and impulsive SEP events. We employ two different mass separation techniques to obtain 3He, 4He, Fe, and O fluences for each event, and we determine the 3He/4He and Fe/O abundance ratios between 0.32 to 0.45 MeV/nucleon and 0.64 to 1.28 MeV/nucleon. We find a clear correlation in the 3He/4He and Fe/O abundance ratios between both energy ranges. We find two distinct trends in the 3He/4He vs. Fe/O relation. For low 3He/4He values, there is a positive linear correlation between 3He/4He and Fe/O. However, at 3He/4He ~ 0.3, Fe/O appears to reach a limit and the correlation weakens significantly. We provide a live catalogue of 3He rich time periods that includes the robust determination of the onset and end times of the 3He enhancements in SEP-associated periods for different types of events observed my multiple spacecraft. This catalogue is available for public use. New releases will follow after major additions such as adding new periods from new missions (e.g., Parker Solar Probe and Solar Orbiter), identifying event types (impulsive SEP events, etc.), or adding new parameters such as remote observations detailing characteristics of the active regions., Comment: 22 pages, 9 figures, publishing in ApJ Supplemental Series

Published
2022
Full Text
View/download PDF

5. Priority Questions for Jupiter System Science in the 2020s and Opportunities for Europa Clipper

Author

Sayanagi, Kunio M., Becker, Tracy, Brooks, Shawn, Brueshaber, Shawn, Dahl, Emma, de Pater, Imke, Ebert, Robert, Moutamid, Maryame El, Fletcher, Leigh, Jessup, Kandis Lea, McEwen, Alfred, Molyneux, Philippa M., Moore, Luke, Moses, Julianne, Nénon, Quentin, Orton, Glenn, Paranicas, Christopher, Showalter, Mark, Spilker, Linda, Tiscareno, Matt, Westlake, Joseph, Wong, Michael H., and Young, Cindy

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Earth and Planetary Astrophysics
Abstract

This whitepaper identifies important science questions that can be answered through exploration of the Jupiter System, with emphasis on the questions that can be addressed by the Europa Clipper Mission. We advocate for adding Jupiter System Science to the mission after launch when expanding the scientific scope will not affect the development cost., Comment: White Paper submitted to the Astrobiology and Planetary Science Decadal Survey

Published
2020

6. Solar System Ice Giants: Exoplanets in our Backyard

Author

Rymer, Abigail, Mandt, Kathleen, Hurley, Dana, Lisse, Carey, Izenberg, Noam, Smith, H. Todd, Westlake, Joseph, Bunce, Emma, Arridge, Christopher, Masters, Adam, Hofstadter, Mark, Simon, Amy, Brandt, Pontus, Clark, George, Cohen, Ian, Allen, Robert, Vine, Sarah, Hansen, Kenneth, Hospodarsky, George, Kurth, William, Romani, Paul, Lamy, Laurent, Zarka, Philippe, Cao, Hao, Paty, Carol, Hedman, Matthew, Roussos, Elias, Cruikshank, Dale, Farrell, William, Fieseler, Paul, Coates, Andrew, Yelle, Roger, Parkinson, Christopher, Militzer, Burkhard, Grodent, Denis, Kollmann, Peter, McNutt, Ralph, André, Nicolas, Strange, Nathan, Barnes, Jason, Dones, Luke, Denk, Tilmann, Rathbun, Julie, Lunine, Jonathan, Desai, Ravi, Cochrane, Corey, Sayanagi, Kunio M., Postberg, Frank, Ebert, Robert, Hill, Thomas, Mueller-Wodarg, Ingo, Regoli, Leonardo, Pontius, Duane, Stanley, Sabine, Greathouse, Thomas, Saur, Joachim, Marouf, Essam, Bergman, Jan, Higgins, Chuck, Johnson, Robert, Thomsen, Michelle, Soderlund, Krista, Jia, Xianzhe, Wilson, Robert, Englander, Jacob, Burch, Jim, Nordheim, Tom, Grava, Cesare, Baines, Kevin, Quick, Lynnae, Russell, Christopher, Cravens, Thomas, Cecconi, Baptiste, Aslam, Shahid, Bray, Veronica, Garcia-Sage, Katherine, Richardson, John, Clark, John, Hsu, Sean, Achterberg, Richard, Sergis, Nick, Paganelli, Flora, Kempf, Sasha, Orton, Glenn, Portyankina, Ganna, Jones, Geraint, Economou, Thanasis, Livengood, Timothy, Krimigi, Stamatios, Szalay, James, Jackman, Catriona, Valek, Phillip, Lecacheux, Alain, Colwell, Joshua, Jasinski, Jamie, Tosi, Federico, Sulaiman, Ali, Galand, Marina, Kotova, Anna, Khurana, Krishan, Kivelson, Margaret, Strobel, Darrell, Radiota, Aikaterina, Estrada, Paul, Livi, Stefano, Azari, Abigail, Yates, Japheth, Allegrini, Frederic, Vogt, Marissa, Felici, Marianna, Luhmann, Janet, Filacchione, Gianrico, and Moore, Luke

Subjects
Astrophysics - Earth and Planetary Astrophysics
Abstract

Future remote sensing of exoplanets will be enhanced by a thorough investigation of our solar system Ice Giants (Neptune-size planets). What can the configuration of the magnetic field tell us (remotely) about the interior, and what implications does that field have for the structure of the magnetosphere; energy input into the atmosphere, and surface geophysics (for example surface weathering of satellites that might harbour sub-surface oceans). How can monitoring of auroral emission help inform future remote observations of emission from exoplanets? Our Solar System provides the only laboratory in which we can perform in-situ experiments to understand exoplanet formation, dynamos, systems and magnetospheres., Comment: Exoplanet Science Strategy White Paper, submitted to the National Academies of Sciences, Engineering and Medicine, Space Studies Board, 9 March 2018

Published
2018

7. Dawn‐Dusk Asymmetry of Plasma Flow in Jupiter's Middle Magnetosphere Observed by Juno.

Author

Wang, Jian‐Zhao, Bagenal, Fran, Wilson, Robert J., Nerney, Edward, Ebert, Robert W., Valek, Philip W., Allegrini, Frederic, Szalay, Jamey R., and Delamere, Peter A.

Subjects
LOW temperature plasmas, PLASMA flow, AURORAS, JUPITER (Planet), MAGNETIC fields
Abstract

Based on plasma observations from Juno's Joviana Auroral Distributions Experiment instrument and forward modeling, we investigate the dawn‐dusk asymmetries within Jupiter's magnetosphere between 10 and 40 RJ ${\mathrm{R}}_{J}$. On the dawnside, the flux tubes are depleted characterized by low density and near rigid‐corotation velocity, with a low temperature and thin plasma sheet. On the duskside, the flux tubes are assimilated characterized by high density and sub‐corotation velocity, with a hotter and thicker plasma sheet. Super‐corotating hot inflows originating from reconnection events are identified in the pre‐dawn sector. These observations are consistent with the Vasyliūnas cycle, suggesting it operates in a region closer to Jupiter than previous studies suggested. Outflows are locally coupled with swept‐back magnetic fields and are frequently observed near midnight. Inflows are locally coupled with swept‐forward fields with higher temperatures. The discernible temperature difference between inflows and outflows reveals their distinct origins. Plasma beta increases with radial distance, suggesting increased instabilities at larger distances. Plain Language Summary: Jupiter's magnetosphere is internally driven by plasma originating from its moons, particularly Io. As the plasma corotates around Jupiter and is transported outward, the force balance breaks with stretched magnetic field and pinched off plasma blobs, resulting in local time asymmetry. For the first time, this asymmetry is validated within 40 Jupiter radii using plasma observations from the Juno mission. Compared to the duskside, the dawnside plasma exhibits lower density, higher temperature, and larger corotational velocity (even exceeds rigid corotation sometimes). These results indicate distinct origins for inflows and outflows. This study brings us a step forward in our understanding of the dynamics of Jupiter's magnetosphere and provides a data set for comparison with simulations. Key Points: The dawn‐dusk asymmetry between 10 and 40 RJ is modulated by the Vasyliūnas cycle, featuring super‐corotating flows in the pre‐dawn sectorThe flux tubes are depleted and accelerated on the dawnside, while they are dense and sub‐corotational on the dusksideThe temperature difference between inflows and outflows suggests physically distinct origins [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

8. Ice giant magnetospheres

Author

Paty, Carol, Arridge, Chris S., Cohen, Ian J., DiBraccio, Gina A., Ebert, Robert W., and Rymer, Abigail M.

Published
2020

9. Radial and Vertical Structures of Plasma Disk in Jupiter's Middle Magnetosphere.

Author

Wang, Jian‐Zhao, Bagenal, Fran, Wilson, Robert J., Nerney, Edward, Ebert, Robert W., Valek, Philip W., and Allegrini, Frederic

Subjects
MAGNETOSPHERE, PLASMA temperature, DENSE plasmas, PLASMA sources, ACCRETION disks, ELECTRIC fields
Abstract

The Juno mission flew through the plasma disk near the equator in Jupiter's magnetosphere frequently. We identify 274 plasma disk crossings of Juno between 10 and 40 RJ from PJ5 to PJ44. Using a forward modeling method that combines the JADE‐I time‐of‐flight and SPECIES data sets, we perform a survey of ion properties in the plasma disk. Ions are heated from 1.5 to 6 keV between 15 and 30 RJ. Density and temperature are locally anti‐correlated. Assumed to be related to centrifugal instabilities, cold, dense plasma are commonly observed near midnight. Plasma corotates around Jupiter and the rigid corotation breaks down outside 15–20 RJ. The plasma bulk velocity increases from the post‐dusk sector to the pre‐dawn sector featuring injection flows in the pre‐dawn sector, which is consistent with the Vasyliunas cycle. Strong outflows (>100 km/s) are commonly observed outside 20 RJ and the average radial velocity increases with radial distance. The ion abundance changes between 10 and 18 RJ and that might indicate plasma sources and/or sinks near Europa and Ganymede. The vertical distribution of ions is controlled by the balance between centrifugal, pressure gradient, and ambipolar electric field forces. An example near the M‐shell of 13.5 shows that average plasma temperature increases by a factor of 10 from the disk center to edge, because cold ions are more confined near the equator. Lighter ions with higher charge states have more mobility along the field line and have larger scale heights. The observations are compared with multi‐species diffusive equilibrium model. Key Points: The ion properties of the plasma disk are investigated based on 274 plasma disk crossings of Juno on Jupiter's nightsideStrong outflows are observed frequently outside 25 RJ and corotational velocity increases from the post‐dusk sector to the pre‐dawn sectorColder (hotter) and heavier (lighter) ions with lower (higher) charge states are more (less) confined near the equator [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

10. Jupiter

Author

Altieri, Francesca, primary, Adriani, Alberto, additional, Bonfond, Bertrand, additional, Clark, George B., additional, Ebert, Robert W., additional, Miguel, Yamila, additional, and Mura, Alessandro, additional

Published
2021
Full Text
View/download PDF

12. Seven Sisters—Pathfinder Mission to Protect Humanity from Space Weather

Author

Nykyri, Katariina, primary, Argall, Matthew, additional, Borovsky, Joseph, additional, Broll, Jeffrey, additional, Burch, Jim, additional, Burkholder, Brandon, additional, Cuéllar, Roberto, additional, Moudt, Lauren De, additional, Ebert, Robert Wilkes, additional, Herring, Mark, additional, Jorgensen, Therese Moretto, additional, Ma, Xuanye, additional, Michael, Hesse, additional, Ogasawara, Keiichi, additional, Opher, Merav, additional, Parker, Jeff, additional, Rosen, Mitchell, additional, Russell, Christopher, additional, Sibeck, David, additional, Torbert, Roy, additional, Wilder, Frederick, additional, and Wing, Simon, additional

Published
2023
Full Text
View/download PDF

13. Critical Solar Wind Measurements Required For the Next Generation Space Weather Prediction Mission: Science Motivation for the Seven Sisters Mission

Author

Nykyri, Katariina, primary, Adhikari, Laxman, additional, Argall, Matthew, additional, Borovsky, Joseph, additional, Broll, Jeffrey, additional, Burkholder, Brandon, additional, DiMatteo, Simon, additional, Ebert, Robert Wilkes, additional, Egedal, Jan, additional, Hesse, Michael, additional, Holland, Katherine, additional, Jorgensen, Therese Moretto, additional, Kavosi, Shiva, additional, Liou, Yu-Lun, additional, Ma, Xuanye, additional, Ofman, Leon, additional, Ogasawara, Keiichi, additional, Opher, Merav, additional, Poh, Gang Kai, additional, Russell, Christopher, additional, Sibeck, David, additional, Torbert, Roy, additional, Viall-Kepko, Nicholeen, additional, Wallace, Samantha, additional, West, Matthew, additional, Wilder, Frederick, additional, and Wing, Simon, additional

Published
2023
Full Text
View/download PDF

15. Acceleration of an interplanetary shock through the magnetosheath: a global hybrid simulation.

Author

Moissard, C., Savoini, P., Fontaine, D., Modolo, R., Ebert, Robert Wilkes, and Oliveira, Denny

Subjects
INTERPLANETARY magnetic fields, HYBRID computer simulation, MACH number, SPACE environment, SOLAR wind, CORONAL mass ejections, MAGNETIC dipoles
Abstract

According to most observations and simulations, interplanetary shocks slow down when they propagate through the magnetosheath. In this article, we present results from a self-consistent global hybrid PIC simulation of an interplanetary shock which, by contrast, accelerates as it propagates through the magnetosheath. In this simulation, the solar wind upstream of the interplanetary shock is set up with an Alfvén Mach number MA = 4.5 and the interplanetary magnetic field (IMF) is set up to be almost parallel to the y direction in GSE coordinate system. The 'planet' is modelled as a magnetic dipole with no tilt: the dipole is in the GSE's z direction. In the ecliptic plane (Oxy), which contains the interplanetary magnetic field (IMF), the magnetic field lines are piling up against the magnetopause, and the velocity of the interplanetary shock decreases from 779 ± 48 km/s in the solar wind down to 607 ± 48 km/s in the magnetosheath. By contrast, in the noon-meridian plane (Oxz), which is perpendicular to the IMF, the velocity of the interplanetary shock in the magnetosheath can reach values up to 904 ± 48 km/s. This study suggests that interplanetary shocks can accelerate as they propagate through the magnetosheath. This finding, reported here for the first time, could have important implications for space weather, as it corresponds to the case where an interplanetary shock catches up with a low Alfvén Mach number solar transient such as an interplanetary coronal mass ejection. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

17. Seven Sisters: a mission to study fundamental plasma physical processes in the solar wind and a pathfinder to advance space weather prediction

Author

Nykyri, Katariina, primary, Ma, Xuanye, additional, Burkholder, Brandon, additional, Liou, Yu-Lun, additional, Cuéllar, Roberto, additional, Kavosi, Shiva, additional, Borovsky, Joseph E., additional, Parker, Jeff, additional, Rosen, Mitchell, additional, De Moudt, Lauren, additional, Ebert, Robert Wilkes, additional, Ogasawara, Keiichi, additional, Opher, Merav, additional, Sibeck, David Gary, additional, Di Matteo, Simone, additional, Viall, Nicholeen, additional, Wallace, Samantha, additional, Jorgensen, Therese M., additional, Hesse, Michael, additional, West, Matthew J., additional, Adhikari, Laxman, additional, Argall, Matthew R., additional, Egedal, Jan, additional, Wilder, Frederick, additional, Broll, Jeffrey, additional, Poh, Gangkai, additional, Wing, Simon, additional, and Russell, Christopher, additional

Published
2023
Full Text
View/download PDF

21. Response of the Jovian radio emission to magnetospheric disturbances inferred from in situ Juno observations.

Author

Louis, Corentin, primary, Jackman, Caitriona, additional, Hospodarsky, George, additional, O'Kane Hackett, Aoife, additional, Devon-Hurley, Elliot, additional, Zarka, Philippe, additional, Kurth, William, additional, Ebert, Robert, additional, Weigt, Dale, additional, Fogg, Alexandra, additional, Waters, James, additional, McEntee, Seán, additional, Connerney, John, additional, Louarn, Philippe, additional, Levin, Steven, additional, and Bolton, Scott, additional

Published
2023
Full Text
View/download PDF

22. Water-group pickup ions from Europa: A window into surface ice evolution

Author

Szalay, Jamey, primary, Allegrini, Frederic, additional, Ebert, Robert, additional, Bagenal, Fran, additional, Bolton, Scott, additional, Fatemi, Shahab, additional, McComas, David, additional, Pontoni, Angele, additional, Poppe, Andrew, additional, Sarkango, Yash, additional, Saur, Joachim, additional, Smith, Todd, additional, Valek, Philip, additional, Vance, Steven, additional, Vorburger, Audrey, additional, and Wilson, Robert, additional

Published
2023
Full Text
View/download PDF

25. Evidence for electrostatic and Alfvénic accelerations in the Europa footprint tail revealed by Juno in-situ measurements

Author

Rabia, Jonas, primary, Hue, Vincent, additional, Szalay, Jamey R., additional, André, Nicolas, additional, Nénon, Quentin, additional, Blanc, Michel, additional, Allegrini, Frederic, additional, Bolton, Scott J., additional, Connerney, Jack E.P., additional, Ebert, Robert W., additional, Greathouse, Thomas K., additional, Louarn, Philippe, additional, Mura, Alessandro, additional, Penou, Emmanuel, additional, and Sulaiman, Ali H., additional

Published
2023
Full Text
View/download PDF

29. Water-group pickup ions from Europa-genic neutrals orbiting Jupiter 

Author

Szalay, Jamey, primary, Smith, Todd, additional, Zirnstein, Eric, additional, McComas, David, additional, Begley, Luke, additional, Bagenal, Fran, additional, Delamere, Peter, additional, Wilson, Robert, additional, Valek, Phil, additional, Poppe, Andrew, additional, Nenon, Quentin, additional, Allegrini, Frederic, additional, Ebert, Robert, additional, and Bolton, Scott, additional

Published
2022
Full Text
View/download PDF

32. Evidence for Magnetic Reconnection at Ganymede’s Upstream Magnetopause during the PJ34 Juno Flyby

Author

Ebert, Robert W., primary, Allegrini, Frederic, additional, Angold, NIgel, additional, Bagenal, Fran, additional, Bolton, Scott J., additional, Connerney, Jack, additional, DiBraccio, Gina, additional, Fattig, Eric, additional, Fuselier, Stephen A., additional, Levin, Steve, additional, McComas, David J., additional, Montgomery, Jake, additional, Romanelli, Norberto, additional, Szalay, Jamey R., additional, Valek, Phil, additional, and Wilson, Robert J., additional

Published
2022
Full Text
View/download PDF

34. Jupiter's low-altitude auroral zones: Fields, particles, plasma waves, and density depletions

Author

Sulaiman, Ali H., primary, Allegrini, Frederic, additional, Clark, George, additional, Gladstone, Randy, additional, Kotsiaros, Stavros, additional, Kurth, William S, additional, Mauk, Barry H., additional, Szalay, Jamey R., additional, Bagenal, Fran, additional, Bonfond, Bertrand, additional, Connerney, John E. P., additional, Ebert, Robert Wilkes, additional, Elliott, Sadie Suzanne, additional, Gershman, Daniel J, additional, Hospodarsky, George Blair, additional, Hue, Vincent, additional, Lysak, Robert L., additional, Masters, Adam, additional, Santolik, Ondrej, additional, Saur, Joachim, additional, and Bolton, Scott J, additional

Published
2022
Full Text
View/download PDF

35. Simultaneous UV Images and High-latitude Particle and Field Measurements During an Auroral Dawn Storm at Jupiter

Author

Ebert, Robert Wilkes, primary, Greathouse, Thomas K., additional, Clark, George, additional, Allegrini, Frederic, additional, Bagenal, Fran, additional, Bolton, Scott J, additional, Bonfond, Bertrand, additional, Connerney, John E. P., additional, Gladstone, Randy, additional, Hue, Vincent, additional, Imai, Masafumi, additional, Kurth, William S, additional, Levin, Steven M., additional, Louarn, Philippe, additional, Mauk, Barry H., additional, McComas, David J., additional, Paranicas, Christopher P., additional, Sulaiman, Ali H., additional, Szalay, Jamey R., additional, Thomsen, Michelle F., additional, and Wilson, Robert J., additional

Published
2021
Full Text
View/download PDF

36. Flexner's Model and the Future of Medical Education.

Author

Ebert, Robert H.

Abstract

Abraham Flexner's educational philosophy serves as the basis for an examination of medical education. It is concluded that physicians would be better equipped to face the future complexities of medical practice if upper division undergraduate study, medical school, and graduate medical education were better articulated and treated as a continuum. (Author/MSE)

Published
1992

37. Health Professions Education for Year 2001.

Author

Ebert, Robert H.

Abstract

Economic, demographic, technological, and practice factors outside the health professions that will influence education and practice in the future are outlined, and critical educational components (sciences, epidemiology, public health, quantitative skills, literacy, information retrieval and use) and elements in the academic and clinical environments are enumerated. (MSE)

Published
1991

40. A new framework to explain changes in Io's footprint tail electron fluxes in the Juno era

Author

Szalay, Jamey, primary, Allegrini, Frederic, additional, Bagenal, Fran, additional, Bolton, Scott, additional, Bonfond, Bertrand, additional, Clark, George, additional, Connerney, Jack, additional, Ebert, Robert, additional, Hue, Vincent, additional, McComas, David, additional, Saur, Joachim, additional, Sulaiman, Ali, additional, and Wilson, Robert, additional

Published
2021
Full Text
View/download PDF

41. Revealing the source of Jupiter’s x-ray auroral flares

Author

Yao, Zhonghua, primary, Dunn, William R., additional, Woodfield, Emma E., additional, Clark, George, additional, Mauk, Barry H., additional, Ebert, Robert W., additional, Grodent, Denis, additional, Bonfond, Bertrand, additional, Pan, Dongxiao, additional, Rae, I. Jonathan, additional, Ni, Binbin, additional, Guo, Ruilong, additional, Branduardi-Raymont, Graziella, additional, Wibisono, Affelia D., additional, Rodriguez, Pedro, additional, Kotsiaros, Stavros, additional, Ness, Jan-Uwe, additional, Allegrini, Frederic, additional, Kurth, William S., additional, Gladstone, G. Randall, additional, Kraft, Ralph, additional, Sulaiman, Ali H., additional, Manners, Harry, additional, Desai, Ravindra T., additional, and Bolton, Scott J., additional

Published
2021
Full Text
View/download PDF

43. Revealing the source of Jupiter’s x-ray auroral flares

Author

Yao, Zhonghua, Dunn, William R., Woodfield, Emma E., Clark, George, Mauk, Barry H., Ebert, Robert W., Grodent, Denis, Bonfond, Bertrand, Pan, Dongxiao, Rae, I. Jonathan, Ni, Binbin, Guo, Ruilong, Branduardi-Raymont, Graziella, Wibisono, Affelia D., Rodriguez, Pedro, Kotsiaros, Stavros, Ness, Jan-Uwe, Allegrini, Frederic, Kurth, William S., Gladstone, G. Randall, Kraft, Ralph, Sulaiman, Ali H., Manners, Harry, Desai, Ravindra T., Bolton, Scott J., Yao, Zhonghua, Dunn, William R., Woodfield, Emma E., Clark, George, Mauk, Barry H., Ebert, Robert W., Grodent, Denis, Bonfond, Bertrand, Pan, Dongxiao, Rae, I. Jonathan, Ni, Binbin, Guo, Ruilong, Branduardi-Raymont, Graziella, Wibisono, Affelia D., Rodriguez, Pedro, Kotsiaros, Stavros, Ness, Jan-Uwe, Allegrini, Frederic, Kurth, William S., Gladstone, G. Randall, Kraft, Ralph, Sulaiman, Ali H., Manners, Harry, Desai, Ravindra T., and Bolton, Scott J.

Abstract

Jupiter’s rapidly rotating, strong magnetic field provides a natural laboratory that is key to understanding the dynamics of high-energy plasmas. Spectacular auroral x-ray flares are diagnostic of the most energetic processes governing magnetospheres but seemingly unique to Jupiter. Since their discovery 40 years ago, the processes that produce Jupiter’s x-ray flares have remained unknown. Here, we report simultaneous in situ satellite and space-based telescope observations that reveal the processes that produce Jupiter’s x-ray flares, showing surprising similarities to terrestrial ion aurora. Planetary-scale electromagnetic waves are observed to modulate electromagnetic ion cyclotron waves, periodically causing heavy ions to precipitate and produce Jupiter’s x-ray pulses. Our findings show that ion aurorae share common mechanisms across planetary systems, despite temporal, spatial, and energetic scales varying by orders of magnitude.

Published
2021

44. Uranus Pathfinder: exploring the origins and evolution of Ice Giant planets

Author

Arridge, Christopher S., Agnor, Craig B., André, Nicolas, Baines, Kevin H., Fletcher, Leigh N., Gautier, Daniel, Hofstadter, Mark D., Jones, Geraint H., Lamy, Laurent, Langevin, Yves, Mousis, Olivier, Nettelmann, Nadine, Russell, Christopher T., Stallard, Tom, Tiscareno, Matthew S., Tobie, Gabriel, Bacon, Andrew, Chaloner, Chris, Guest, Michael, Kemble, Steve, Peacocke, Lisa, Achilleos, Nicholas, Andert, Thomas P., Banfield, Don, Barabash, Stas, Barthelemy, Mathieu, Bertucci, Cesar, Brandt, Pontus, Cecconi, Baptiste, Chakrabarti, Supriya, Cheng, Andy F., Christensen, Ulrich, Christou, Apostolos, Coates, Andrew J., Collinson, Glyn, Cooper, John F., Courtin, Regis, Dougherty, Michele K., Ebert, Robert W., Entradas, Marta, Fazakerley, Andrew N., Fortney, Jonathan J., Galand, Marina, Gustin, Jaques, Hedman, Matthew, Helled, Ravit, Henri, Pierre, Hess, Sebastien, Holme, Richard, Karatekin, Özgur, Krupp, Norbert, Leisner, Jared, Martin-Torres, Javier, Masters, Adam, Melin, Henrik, Miller, Steve, Müller-Wodarg, Ingo, Noyelles, Benoît, Paranicas, Chris, de Pater, Imke, Pätzold, Martin, Prangé, Renée, Quémerais, Eric, Roussos, Elias, Rymer, Abigail M., Sánchez-Lavega, Agustin, Saur, Joachim, Sayanagi, Kunio M., Schenk, Paul, Schubert, Gerald, Sergis, Nick, Sohl, Frank, Sittler, Jr., Edward C., Teanby, Nick A., Tellmann, Silvia, Turtle, Elizabeth P., Vinatier, Sandrine, Wahlund, Jan-Erik, and Zarka, Philippe

Published
2012
Full Text
View/download PDF

45. The Magnetosphere of Jupiter: Moving from Discoveries Towards Understanding

Author

Crary, Frank, primary, Clark, George B., additional, Delamere, Peter, additional, Dong, Chuanfei, additional, Ebert, Robert W., additional, Harris, Camilla, additional, Hospodarsky, George, additional, Hsu, Sean, additional, Huybrighs, Hans, additional, Kotova, Anna, additional, Livengood, Tim, additional, Paranicas, Chris, additional, Retherford, Kurt, additional, Roussos, Elias, additional, Sarkango, Yash, additional, Saur, Joachim, additional, Szalay, Jamey R., additional, Vogt, Marissa, additional, and Wang, Liang, additional

Published
2021
Full Text
View/download PDF

46. Priority Questions for Jupiter System Science in the 2020s and Opportunities for Europa Clipper

Author

Sayanagi, Kunio, primary, Wong, Mike, additional, Becker, Tracy, additional, Brooks, Shawn, additional, Brueshaber, Shawn Rebel, additional, Dahl, Emma K, additional, Pater, Imke de, additional, Ebert, Robert W., additional, Moutamid, Maryame El, additional, Fletcher, Leigh N., additional, McEwen, Alfred, additional, Molyneux, Philippa M., additional, Nenon, Quentin, additional, Orton, Glenn S., additional, Paranicas, Chris, additional, Showalter, Mark R., additional, Spilker, Linda J., additional, Tiscareno, Matthew, additional, Westlake, Joseph H., additional, Moore, Luke, additional, Moses, Julianne, additional, Young, Cindy, additional, and Jussep, Kandis, additional

Published
2021
Full Text
View/download PDF

47. New Frontiers-class Uranus Orbiter: Exploring the feasibility of achieving multidisciplinary science with a mid-scale mission

Author

Cohen, Ian, primary, Beddingfield, Chloe, additional, Chancia, Robert, additional, DiBraccio, Gina, additional, Hedman, Matthew, additional, MacKenzie, Shannon, additional, Mauk, Barry, additional, Sayanagi, Kunio, additional, Soderlund, Krista, additional, Turtle, Elizabeth, additional, Adams, Elena, additional, Ahrens, Caitlin, additional, Brooks, Shawn, additional, Bunce, Emma, additional, Charnoz, Sebastien, additional, Clark, George, additional, Coustenis, Athena, additional, Dillman, Robert, additional, Dutta, Soumyo, additional, Fletcher, Leigh, additional, Harbison, Rebecca, additional, Helled, Ravit, additional, Holme, Richard, additional, Jozwiak, Lauren, additional, Kasaba, Yasumasa, additional, Kollmann, Peter, additional, Luszcz-Cook, Statia, additional, Mandt, Kathleen, additional, Mousis, Olivier, additional, Mura, Alessandro, additional, Murakami, Go, additional, Parisi, Marzia, additional, Rymer, Abigail, additional, Stanley, Sabine, additional, Stephan, Katrin, additional, Vervack, Ronald, additional, Wong, Michael, additional, Wurz, Peter, additional, Balint, Tibor, additional, Brueshaber, Shawn, additional, Cao, Xin, additional, Cartwright, Richard, additional, Cochrane, Corey, additional, Cocoros, Alice, additional, Craft, Kate, additional, Daubar, Ingrid, additional, Pater, Imke de, additional, Dong, Chuanfei, additional, Ebert, Robert, additional, Elder, Catherine, additional, Ernst, Carolyn, additional, Filacchione, Gianrico, additional, Fortney, Jonathan, additional, Gershman, Daniel, additional, Gjerloev, Jesper, additional, Gkioulidou, Matina, additional, Girija, Athul P., additional, Hospodarsky, George, additional, Jackman, Caitriona, additional, Jha, Devanshu, additional, Leonard, Erin, additional, Lucas, Michael, additional, Lucchetti, Alice, additional, Meyer, Heather, additional, Masters, Adam, additional, Moore, Kimberly, additional, Moran, Sarah, additional, Nikoukar, Romina, additional, Pajola, Maurizio, additional, Paranicas, Chris, additional, Patterson, Wes, additional, Paty, Carol, additional, Pinilla-Alonso, Noemi, additional, Poh, Gangkai, additional, Probst, Alena, additional, Quick, Lynnae, additional, Regoli, Leonardo, additional, Roberts, James, additional, Rodriguez, Sebastien, additional, Runyon, Kirby, additional, Smith, Todd, additional, Spilker, Linda, additional, Stern, Alan, additional, Tortora, Paolo, additional, Turner, Drew, additional, Ukhorskiy, Sasha, additional, Vines, Sarah, additional, Young, Roland, additional, and Zhang, Yongliang, additional

Published
2021
Full Text
View/download PDF

49. Energetic proton acceleration associated with Io's footprint tail

Author

George Clark, Barry H. Mauk, Peter Kollmann, Szalay R. Jamey, Ali H. Sulaiman, Daniel J Gershman, Joachim Saur, Sascha Janser, Katherine Garcia-Sage, Thomas K. Greathouse, Christopher P. Paranicas, Allegrini Frederic, Bagenal Fran, Scott J Bolton, John E. P. Connerney, ebert robert, George Blair Hospodarsky, Dennis K Haggerty, Vincent Hue, Masafumi Imai, Stavros Kotsiaros, mccomas David, Abigail Mary Rymer, and Joseph Hinton Westlake

Published
2020

50. Pre-packaged asbestos bankruptcies: a flawed solution.

Author

Plevin, Mark D., Ebert, Robert T., and Epley, Leslie A.

Subjects
Indemnity against liability -- Laws, regulations and rules, Bankruptcy -- Cases, Asbestos industry -- Laws, regulations and rules, Company bankruptcy, Government regulation, Company legal issue, Bankruptcy Code of 1978 (11 U.S.C. 524(g))
Published
2003

Catalog

Books, media, physical & digital resources
See catalog results