Zobrazeno 1 - 10
of 159
pro vyhledávání: '"Daniel J, Gershman"'
Autor:
Daniel J. Gershman, Gina A. DiBraccio
Publikováno v:
Geophysical Research Letters, Vol 51, Iss 15, Pp n/a-n/a (2024)
Abstract The long‐standing “energy crisis” at the giant planets refers to the anomalous heating of planetary thermospheres compared to the available energy from solar irradiance. The coupling between planetary magnetospheres and their upper atm
Externí odkaz:
https://doaj.org/article/e15d8c3dfb664226a01cebe99e1d2978
Autor:
Bandyopadhyay, Riddhi, Sorriso-Valvo, Luca, Chasapis, Alexandros, Hellinger, Petr, Matthaeus, William H., Verdini, Andrea, Landi, Simone, Franci, Luca, Matteini, Lorenzo, Giles, Barbara L., Pollock, Daniel J. Gershman Craig J., Russell, Christopher T., Strangeway, Robert J., Torbert, Roy B., Moore, Thomas E., Burch, James L.
Publikováno v:
Phys. Rev. Lett. 124, 225101 (2020)
We present estimates of the turbulent energy cascade rate, derived from a Hall-MHD third-order law. We compute the contribution from the Hall term and the MHD term to the energy flux. We use MMS data accumulated in the magnetosheath and the solar win
Externí odkaz:
http://arxiv.org/abs/1907.06802
Autor:
Ian J. Cohen, Drew L. Turner, Peter Kollmann, George B. Clark, Matthew E. Hill, Leonardo H. Regoli, Daniel J. Gershman
Publikováno v:
Geophysical Research Letters, Vol 50, Iss 8, Pp n/a-n/a (2023)
Abstract In situ exploration of Uranus has been limited to a single flyby encounter by the Voyager 2 spacecraft in January 1986. Nonetheless, new investigation has led to significant questions about the origin of energetic ions observed in the region
Externí odkaz:
https://doaj.org/article/12df45b5c86f4851ae56e17f3b58ed63
A transient enhancement of Mercury’s exosphere at extremely high altitudes inferred from pickup ions
Autor:
Jamie M. Jasinski, Leonardo H. Regoli, Timothy A. Cassidy, Ryan M. Dewey, Jim M. Raines, James A. Slavin, Andrew J. Coates, Daniel J. Gershman, Tom A. Nordheim, Neil Murphy
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-9 (2020)
Mercury has a global dayside exosphere that is very tenuous and does not extend far from the planet. Here, the authors show enhancement of neutral densities at high altitudes inferred from pickup ions that is most likely caused by the impact of a met
Externí odkaz:
https://doaj.org/article/b38db1575a3b417093cc87967337f87c
Autor:
Rumi Nakamura, Tsugunobu Nagai, Joachim Birn, Victor A. Sergeev, Olivier Le Contel, Ali Varsani, Wolfgang Baumjohann, Takuma Nakamura, Sergey Apatenkov, Anton Artemyev, Robert E. Ergun, Stephen A. Fuselier, Daniel J. Gershman, Barbara J. Giles, Yuri V. Khotyaintsev, Per-Arne Lindqvist, Werner Magnes, Barry Mauk, Christopher T. Russell, Howard J. Singer, Julia Stawarz, Robert J. Strangeway, Brian Anderson, Ken R. Bromund, David Fischer, Laurence Kepko, Guan Le, Ferdinand Plaschke, James A. Slavin, Ian Cohen, Allison Jaynes, Drew L. Turner
Publikováno v:
Earth, Planets and Space, Vol 69, Iss 1, Pp 1-14 (2017)
Abstract We report on the large-scale evolution of dipolarization in the near-Earth plasma sheet during an intense (AL ~ −1000 nT) substorm on August 10, 2016, when multiple spacecraft at radial distances between 4 and 15 R E were present in the ni
Externí odkaz:
https://doaj.org/article/f74c6b13e64146f7a5051e9333cb2d3c
Autor:
Daniel J. Gershman, Adolfo F-Viñas, John C. Dorelli, Scott A. Boardsen, Levon A. Avanov, Paul M. Bellan, Steven J. Schwartz, Benoit Lavraud, Victoria N. Coffey, Michael O. Chandler, Yoshifumi Saito, William R. Paterson, Stephen A. Fuselier, Robert E. Ergun, Robert J. Strangeway, Christopher T. Russell, Barbara L. Giles, Craig J. Pollock, Roy B. Torbert, James L. Burch
Publikováno v:
Nature Communications, Vol 8, Iss 1, Pp 1-10 (2017)
Alfvén waves are fundamental plasma modes that provide a mechanism for the transfer of energy between particles and fields. Here the authors confirm experimentally the conservative energy exchange between Alfvén wave fields and plasma particles via
Externí odkaz:
https://doaj.org/article/0daa415ed7f4414f9f4e54e4ec55cf97
Autor:
Louis Richard, Yuri V. Khotyaintsev, Daniel B. Graham, Andris Vaivads, Daniel J. Gershman, Christopher T. Russell
Magnetotail magnetic reconnection results in fast plasma flows referred to as jets. Reconnection jets are populated with complex non-Maxwellian ion distributions providing a source of free energy for the micro-instabilities, which contribute to the i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::98959c42fc0d76f34529bedbb3625605
https://doi.org/10.5194/egusphere-egu23-5887
https://doi.org/10.5194/egusphere-egu23-5887
Autor:
Owen Wyn Roberts, Zoltán Voros, Klaus Torkar, Julia E. Stawarz, Riddhi Bandyopadhyay, Daniel J Gershman, Yasuhito Narita, Rungployphan Kieokaew, Benoit Lavraud, Kristopher Gregory Klein, Yan Yang, Rumi Nakamura, Alexandros Chasapis, William H. Matthaeus
Calculating the pressure-strain terms has recently been performed to quantify energy conversion between the bulk flow energy and the internal energy of plasmas. It has been applied to numerical simulations and satellite data from the Magnetospheric M
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8b046b37e1532c50fdc119565dc17786
https://doi.org/10.22541/essoar.168167247.77367409/v1
https://doi.org/10.22541/essoar.168167247.77367409/v1
Autor:
William R. Paterson, Daniel J. Gershman, Shrikanth G. Kanekal, Roberto Livi, Mark B. Moldwin, Eftyhia Zesta, Brent Randol, Marilia Samara
The Heliophysics Environmental and Radiation Measurement Experiment Suite (HERMES) is a multi-instrument science payload that will attach to the HALO module of the Artemis Program’s Gateway lunar outpost. HERMES instrumentation includes an electron
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3dd3966ce18656bb1345fa53d8ebb9a1
https://doi.org/10.5194/egusphere-egu23-8425
https://doi.org/10.5194/egusphere-egu23-8425