Zobrazeno 1 - 10
of 84
pro vyhledávání: '"Dewey , Ryan"'
Autor:
Rivera, Yeimy J., Badman, Samuel T., Stevens, Michael L., Raines, Jim M., Owen, Christopher J., Paulson, Kristoff, Niembro, Tatiana, Livi, Stefano A., Lepri, Susan T., Landi, Enrico, Halekas, Jasper S., Ervin, Tamar, Dewey, Ryan M., Coburn, Jesse T., Bale, Stuart D., Alterman, B. L.
Since Parker Solar Probe's (Parker's) first perihelion pass at the Sun, large amplitude Alfv\'en waves grouped in patches have been observed near the Sun throughout the mission. Several formation processes for these magnetic switchback patches have b
Externí odkaz:
http://arxiv.org/abs/2409.03645
Autor:
Rivera, Yeimy J., Badman, Samuel T., Stevens, Michael L., Verniero, Jaye L., Stawarz, Julia E., Shi, Chen, Raines, Jim M., Paulson, Kristoff W., Owen, Christopher J., Niembro, Tatiana, Louarn, Philippe, Livi, Stefano A., Lepri, Susan T., Kasper, Justin C., Horbury, Timothy S., Halekas, Jasper S., Dewey, Ryan M., De Marco, Rossana, Bale, Stuart D.
Publikováno v:
Science, 385, 962-966 (2024)
After leaving the Sun's corona, the solar wind continues to accelerate and cools, but more slowly than expected for a freely expanding adiabatic gas. We use in situ measurements from the Parker Solar Probe and Solar Orbiter spacecrafts to investigate
Externí odkaz:
http://arxiv.org/abs/2409.00267
Autor:
Ervin, Tamar, Bale, Stuart D., Badman, Samuel T., Bowen, Trevor A., Riley, Pete, Paulson, Kristoff, Rivera, Yeimy J., Romeo, Orlando, Sioulas, Nikos, Larson, Davin E., Verniero, Jaye L., Dewey, Ryan M., Huang, Jia
During Parker Solar Probe (Parker) Encounter 15 (E15), we observe an 18-hour period of near subsonic ($\mathrm{M_S \sim}$ 1) and sub-Alfv\'enic (SA), $\mathrm{M_A}$ <<< 1, slow speed solar wind from 22 to 15.6 R$_\odot$. As the most extreme SA interv
Externí odkaz:
http://arxiv.org/abs/2405.15844
Autor:
Sun, Weijie, Dewey, Ryan M., Jia, Xianzhe, Raines, Jim M., Slavin, James A., Chen, Yuxi, Phan, Tai, Poh, Gangkai, Xu, Shaosui, Milillo, Anna, Lillis, Robert, Saito, Yoshifumi, Livi, Stefano, Orsini, Stefano
Publikováno v:
Geophysical Research Letters, 51, e2023GL107689 (2024)
This study investigates the escape of Mercury's sodium-group ions (Na+-group, including ions with m/q from 21 to 30 amu/e) and their dependence on true anomaly angle (TAA), i.e., Mercury's orbital phase around the Sun, using measurements from MESSENG
Externí odkaz:
http://arxiv.org/abs/2404.13264
Autor:
Ervin, Tamar, Bale, Stuart D., Badman, Samuel T., Rivera, Yeimy J., Romeo, Orlando, Huang, Jia, Riley, Pete, Bowen, Trevor A., Lepri, Susan T., Dewey, Ryan M.
We seek to understand the composition and variability of fast (FSW) and slow Alfvenic solar wind (SASW) emerging from coronal holes (CH). We leverage an opportune conjunction between Solar Orbiter and Parker Solar Probe (PSP) during PSP Encounter 11
Externí odkaz:
http://arxiv.org/abs/2309.07949
Autor:
Cohen, Ian J., Arridge, Chris, Azari, Abigail, Bard, Chris, Clark, George, Crary, Frank, Curry, Shannon, Delamere, Peter, Dewey, Ryan M., DiBraccio, Gina A., Dong, Chuanfei, Drozdov, Alexander, Egert, Austin, Filwett, Rachael, Halekas, Jasper, Halford, Alexa, Hughes, Andréa, Garcia-Sage, Katherine, Gkioulidou, Matina, Goetz, Charlotte, Grava, Cesare, Hirsch, Michael, Huybrighs, Hans Leo F., Kollmann, Peter, Lamy, Laurent, Li, Wen, Liemohn, Michael, Marshal, Robert, Masters, Adam, McAteer, R. T. James, Molaverdikhani, Karan, Mukhopadhyay, Agnit, Nikoukar, Romina, Paxton, Larry, Regoli, Leonardo H., Roussos, Elias, Schneider, Nick, Sulaiman, Ali, Sun, Y., Szalay, Jamey
Heliophysics is the field that "studies the nature of the Sun, and how it influences the very nature of space - and, in turn, the atmospheres of planetary bodies and the technology that exists there." However, NASA's Heliophysics Division tends to li
Externí odkaz:
http://arxiv.org/abs/2308.11690
Autor:
Sun, Weijie, Slavin, James A., Milillo, Anna, Dewey, Ryan M., Orsini, Stefano, Jia, Xianzhe, Raines, Jim M., Livi, Stefano, Jasinski, Jamie M., Fu, Suiyan, Zhao, Jiutong, Zong, Qiu-Gang, Saito, Yoshifumi, Li, Changkun
Publikováno v:
Journal of Geophysical Research: Space Physics, 127, e2022JA030280 (2022)
At Mercury, several processes can release ions and neutrals out of the planet's surface. Here we present enhancements of dayside planetary ions in the solar wind entry layer during flux transfer event (FTE) "showers" near Mercury's northern magnetosp
Externí odkaz:
http://arxiv.org/abs/2201.03987
Autor:
Sun, Weijie, Dewey, Ryan M., Aizawa, Sae, Huang, Jia, Slavin, James A., Fu, Suiyan, Wei, Yong, Bowers, Charles F.
Publikováno v:
Science China Earth Sciences, (2021). 64
This review summarizes the research of Mercury's magnetosphere in the Post-MESSENGER era and compares its dynamics to those in other planetary magnetospheres, especially to those in Earth's magnetosphere. This review starts by introducing the planet
Externí odkaz:
http://arxiv.org/abs/2103.16778
Autor:
Azari, Abigail R., Biersteker, John B., Dewey, Ryan M., Doran, Gary, Forsberg, Emily J., Harris, Camilla D. K., Kerner, Hannah R., Skinner, Katherine A., Smith, Andy W., Amini, Rashied, Cambioni, Saverio, Da Poian, Victoria, Garton, Tadhg M., Himes, Michael D., Millholland, Sarah, Ruhunusiri, Suranga
Machine learning (ML) methods can expand our ability to construct, and draw insight from large datasets. Despite the increasing volume of planetary observations, our field has seen few applications of ML in comparison to other sciences. To support th
Externí odkaz:
http://arxiv.org/abs/2007.15129
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