Search Results - "Mcfadden, James"

Martian Crustal Field Influence on O+ and O2+ Escape as Measured by MAVEN by Weber, Tristan, Brain, David, Xu, Shaosui, Mitchell, David, Espley, Jared, Mazelle, Christian, McFadden, James P., Jakosky, Bruce

“…Martian crustal magnetic fields influence the solar wind interaction with Mars in a way that is not fully understood. In some locations, crustal magnetic…”
Get full text

Photochemical escape of oxygen from Mars: First results from MAVEN in situ data by Lillis, Robert J., Deighan, Justin, Fox, Jane L., Bougher, Stephen W., Lee, Yuni, Combi, Michael R., Cravens, Thomas E., Rahmati, Ali, Mahaffy, Paul R., Benna, Mehdi, Elrod, Meredith K., McFadden, James P., Ergun, Robert. E., Andersson, Laila, Fowler, Christopher M., Jakosky, Bruce M., Thiemann, Ed, Eparvier, Frank, Halekas, Jasper S., Leblanc, François, Chaufray, Jean‐Yves

“…Photochemical escape of atomic oxygen is thought to be one of the dominant channels for Martian atmospheric loss today and played a potentially major role in…”
Get full text

Heavy Ion Escape at Mars during the Disappearing Solar Wind Event in 2022 December by Shen, Han-Wen, Halekas, Jasper S., McFadden, James P., Gruesbeck, Jacob R., Schnepf, Neesha R.

“…Abstract A unique event known as the disappearing solar wind (DSW), characterized by an extremely low-density solar wind stream, occurred at Mars on 2022…”
Get full text

Photoelectron Boundary: The Top of the Dayside Ionosphere at Mars by Xu, Shaosui, Mitchell, David L., McFadden, James P., Fowler, Christopher M., Hanley, Kathleen, Weber, Tristan, Brain, David A., Ma, Yingjuan, DiBraccio, Gina A., Mazelle, Christian, Curry, Shannon M.

“…The interaction between Mars and the solar wind results in different plasma regimes separated by several boundaries, among which the separation between the…”
Get full text

Mars' Ionopause: A Matter of Pressures by Sánchez‐Cano, Beatriz, Narvaez, Clara, Lester, Mark, Mendillo, Michael, Mayyasi, Majd, Holmstrom, Mats, Halekas, Jasper, Andersson, Laila, Fowler, Christopher M., McFadden, James P., Durward, Sofija

“…This study assesses under what circumstances the Martian ionopause is formed on the dayside, both in regions where there are strong crustal magnetic fields and…”
Get full text

Field‐Aligned Potentials at Mars From MAVEN Observations by Xu, Shaosui, Mitchell, David L., McFadden, James P., Collinson, Glyn, Harada, Yuki, Lillis, Robert, Mazelle, Christian, Connerney, J. E. P.

“…One possible ion escape channel at Mars is a polar wind‐like outflow driven by parallel electric fields and/or other acceleration mechanisms. With independent…”
Get full text

Electron Energization by Ion Density Enhancement in the Martian Magnetotail—MAVEN Observations by Xu, Shaosui, Mitchell, David L., Halekas, Jasper S., McFadden, James P., Fowler, Christopher M., Hanley, Kathleen, DiBraccio, Gina A., Mazelle, Christian, Akbari, Hassan, Curry, Shannon M.

“…Abstract It has been long observed at Mars that electron fluxes are enhanced during the tail current sheet crossings, of which the cause is not well…”
Get full text

Tail Reconnection Triggering Substorm Onset by Angelopoulos, Vassilis, McFadden, James P., Larson, Davin, Carlson, Charles W., Mende, Stephen B., Frey, Harald, Phan, Tai, Sibeck, David G., Glassmeier, Karl-Heinz, Auster, Uli, Donovan, Eric, Mann, Ian R., Rae, I. Jonathan, Russell, Christopher T., Runov, Andrei, Zhou, Xu-Zhi, Kepko, Larry

“…Magnetospheric substorms explosively release solar wind energy previously stored in Earth's magnetotail, encompassing the entire magnetosphere and producing…”
Get full text

Statistical Study of Relations Between the Induced Magnetosphere, Ion Composition, and Pressure Balance Boundaries Around Mars Based On MAVEN Observations by Matsunaga, Kazunari, Seki, Kanako, Brain, David A., Hara, Takuya, Masunaga, Kei, Mcfadden, James P., Halekas, Jasper S., Mitchell, David L., Mazelle, Christian, Espley, J. R., Gruesbeck, Jacob, Jakosky, Bruce M.

“…Direct interaction between the solar wind (SW) and the Martian upper atmosphere forms a characteristic region, called the induced magnetosphere between the…”
Get full text

On the Periodic Variation of the Ion Density in the Martian Dayside Ionosphere During the Regional Dust Storm in September 2016 by Hara, Takuya, Masunaga, Kei, Terada, Naoki, Sakai, Shotaro, Osanai, Taiga, Seki, Kanako, Fowler, Christopher M., Hanley, Kathleen Gwen, McFadden, James P., Curry, Shannon M.

“…Dust storms and the atmospheric waves can play a significant role in the dynamics in the upper neutral atmosphere of Mars. Recent observations found that a…”
Get full text

A Survey of Dense Low Energy Ions in Earth's Outer Magnetosphere: Relation to Solar Wind Dynamic Pressure, IMF, and Magnetospheric Activity by Hull, Arthur J., Agapitov, Oleksiy, Mozer, Forrest S., McFadden, James P., Angelopoulos, Vassilis

“…The properties of cold, dense, low energy (<150 eV) ions within Earth's magnetosphere between 6 and 14 RE distance are examined using data sampled by Time…”
Get full text

Closed magnetic topology in the Venusian magnetotail and ion escape at Venus by Xu, Shaosui, Mitchell, David L., Whittlesey, Phyllis, Rahmati, Ali, Livi, Roberto, Larson, Davin, Luhmann, Janet G., Halekas, Jasper S., Hara, Takuya, McFadden, James P., Pulupa, Marc, Bale, Stuart D., Curry, Shannon M., Persson, Moa

“…Venus, lacking an intrinsic global dipole magnetic field, serves as a textbook example of an induced magnetosphere, formed by interplanetary magnetic fields…”
Get full text

Mapping the Lunar Wake Potential Structure With ARTEMIS Data by Xu, Shaosui, Poppe, Andrew R., Halekas, Jasper S., Mitchell, David L., McFadden, James P., Harada, Yuki

“…The refilling of the lunar wake is relatively well explained by the theory of 1‐D plasma expansion into a vacuum; however, the field‐aligned wake potential is…”
Get full text

Traveling Ionospheric Disturbances at Mars by Collinson, Glyn, McFadden, James, Mitchell, David, Grebowsky, Joseph, Benna, Mehdi, Espley, Jared, Jakosky, Bruce

“…We report the first extraterrestrial observation of traveling ionospheric disturbances (TIDs) in the ionosphere of Mars (below ≈160 km) by NASA's Mars…”
Get full text

Inverted‐V Electron Acceleration Events Concurring With Localized Auroral Observations at Mars by MAVEN by Xu, Shaosui, Mitchell, David L., McFadden, James P., Fillingim, Matthew O., Andersson, Laila, Brain, David A., Weber, Tristan, Schneider, Nicholas M., Jain, Sonal, Fowler, Christopher M., Lillis, Robert, Mazelle, Christian, Espley, Jared

“…From February to March 2019, the Mars Atmosphere and Volatile EvolutioN (MAVEN) spacecraft repeatedly observed aurora near periapsis over Mars' southern strong…”
Get full text

Deep nightside photoelectron observations by MAVEN SWEA: Implications for Martian northern hemispheric magnetic topology and nightside ionosphere source by Xu, Shaosui, Mitchell, David, Liemohn, Michael, Dong, Chuanfei, Bougher, Stephen, Fillingim, Matthew, Lillis, Robert, McFadden, James, Mazelle, Christian, Connerney, Jack, Jakosky, Bruce

“…The Mars Atmosphere and Volatile EvolutioN (MAVEN) mission samples the Mars ionosphere down to altitudes of ∼150 km over a wide range of local times and solar…”
Get full text

Superthermal Electron Observations at Mars During the December 2022 Disappearing Solar Wind Event by Xu, Shaosui, Mitchell, David L., Halekas, Jasper, Brain, David A., Weber, Tristan, Andersson, Laila, Shaver, Skylar, Azari, Abigail, McFadden, James P., Hanley, Kathleen, Ma, Yingjuan, Lee, Christina, DiBraccio, Gina A., Mazelle, Christian, Curry, Shannon M.

“…On 26–27 December 2022, Mars experienced an extremely low‐density solar wind stream, which was encountered first by Earth because of the radial alignment of…”
Get full text

Empirically Determined Auroral Electron Events at Mars—MAVEN Observations by Xu, Shaosui, Mitchell, David L., McFadden, James P., Schneider, Nicholas M., Milby, Zachariah, Jain, Sonal, Weber, Tristan, Brain, David A., DiBraccio, Gina A., Halekas, Jasper, Ruhunusiri, Suranga, Mazelle, Christian, Lillis, Robert J., Johnston, Ben

“…Discrete aurorae have been observed at magnetized planets such as Earth and Jupiter, triggered by accelerated electrons. Similar aurorae have also been…”
Get full text

Formation Mechanisms of the Molecular Ion Polar Plume and Its Contribution to Ion Escape From Mars by Sakakura, Kotaro, Seki, Kanako, Sakai, Shotaro, Sakata, Ryoya, Shinagawa, Hiroyuki, Brain, David A., McFadden, James P., Halekas, Jasper S., DiBraccio, Gina A., Jakosky, Bruce M., Terada, Naoki, Tanaka, Takashi

“…We investigated the formation mechanism of a molecular ion plume and its contribution to ion escape based on Mars Atmosphere and Volatile EvolutioN (MAVEN)…”
Get full text

Factors Influencing Postoperative Inpatient Rehabilitation Requirement After Surgical Intervention for Isolated Hip Fracture: A Multicenter Study by Lynch, Daniel J., Romero, Andrew, McFadden, James P., Zeblisky, Peter, Liu, Huazhi, Ang, Darwin

“…ABSTRACT Purpose Hip fractures in the elderly, especially those discharged to a rehab facility, have historically been associated with poor outcomes. There has…”
Get full text