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  Imaging X-ray polarimetry explorer: prelaunch 

  Weisskopf, Martin C.; Soffitta, Paolo; Baldini, Luca; Ramsey, Brian D.; O’Dell, Stephen L.; Romani, Roger W.; Matt, Giorgio; Deininger, William D.; Baumgartner, Wayne H.; Bellazzini, Ronaldo; Costa, Enrico; Kolodziejczak, Jeffery J.; Latronico, Luca; Marshall, Herman L.; Muleri, Fabio; Bongiorno, Stephen D.; Tennant, Allyn; Bucciantini, Niccolo; Dovciak, Michal; Marin, Frederic; Marscher, Alan; Poutanen, Juri; Slane, Pat; Turolla, Roberto; Kalinowski, William; Di Marco, Alessandro; Fabiani, Sergio; Minuti, Massimo; La Monaca, Fabio; Pinchera, Michele; Rankin, John; Sgro’, Carmelo; Trois, Alessio; Xie, Fei; Alexander, Cheryl; Allen, D. Zachery; Amici, Fabrizio; Andersen, Jason; Antonelli, Angelo; Antoniak, Spencer; Attinà, Primo; Barbanera, Mattia; Bachetti, Matteo; Baggett, Randy M.; Bladt, Jeff; Brez, Alessandro; Bonino, Raffaella; Boree, Christopher; Borotto, Fabio; Breeding, Shawn; Brienza, Daniele; Bygott, H. Kyle; Caporale, Ciro; Cardelli, Claudia; Carpentiero, Rita; Castellano, Simone; Castronuovo, Marco; Cavalli, Luca; Cavazzuti, Elisabetta; Ceccanti, Marco; Centrone, Mauro; Citraro, Saverio; D’Amico, Fabio; D’Alba, Elisa; Di Gesu, Laura; Del Monte, Ettore; Dietz, Kurtis L.; Di Lalla, Niccolo’; Persio, Giuseppe Di; Dolan, David; Donnarumma, Immacolata; Evangelista, Yuri; Ferrant, Kevin; Ferrazzoli, Riccardo; Ferrie, MacKenzie; Footdale, Joseph; Forsyth, Brent; Foster, Michelle; Garelick, Benjamin; Gunji, Shuichi; Gurnee, Eli; Head, Michael; Hibbard, Grant; Johnson, Samantha; Kelly, Erik; Kilaru, Kiranmayee; Lefevre, Carlo; Roy, Shelley Le; Loffredo, Pasqualino; Lorenzi, Paolo; Lucchesi, Leonardo; Maddox, Tyler; Magazzu, Guido; Maldera, Simone; Manfreda, Alberto; Mangraviti, Elio; Marengo, Marco; Marrocchesi, Alessandra; Massaro, Francesco; Mauger, David; McCracken, Jeffrey; McEachen, Michael; Mize, Rondal; Mereu, Paolo; Mitchell, Scott; Mitsuishi, Ikuyuki; Morbidini, Alfredo; Mosti, Federico; Nasimi, Hikmat; Negri, Barbara; Negro, Michela; Nguyen, Toan; Nitschke, Isaac; Nuti, Alessio; Onizuka, Mitch; Oppedisano, Chiara; Orsini, Leonardo; Osborne, Darren; Pacheco, Richard; Paggi, Alessandro; Painter, Will; Pavelitz, Steven D.; Pentz, Christina; Piazzolla, Raffaele; Perri, Matteo; Pesce-Rollins, Melissa; Peterson, Colin; Pilia, Maura; Profeti, Alessandro; Puccetti, Simonetta; Ranganathan, Jaganathan; Ratheesh, Ajay; Reedy, Lee; Root, Noah; Rubini, Alda; Ruswick, Stephanie; Sanchez, Javier; Sarra, Paolo; Santoli, Francesco; Scalise, Emanuele; Sciortino, Andrea; Schroeder, Christopher; Seek, Tim; Sosdian, Kalie; Spandre, Gloria; Speegle, Chet O.; Tamagawa, Toru; Tardiola, Marcello; Tobia, Antonino; Thomas, Nicholas E.; Valerie, Robert; Vimercati, Marco; Walden, Amy L.; Weddendorf, Bruce; Wedmore, Jeffrey; Welch, David; Zanetti, Davide; Zanetti, Francesco (SPIE-Intl Soc Optical Eng, 2022-04-14)

  Launched on 2021 December 9, the Imaging X-ray Polarimetry Explorer (IXPE) is a NASA Small Explorer Mission in collaboration with the Italian Space Agency (ASI). The mission will open a new window of investigation—imaging ...
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  Statistical inference with stochastic gradient algorithms 

  Negrea, Jeffrey; Yang, Jun; Feng, Haoyue; Roy, Daniel; Huggins, Jonathan (2022-11-14)

  The tuning of stochastic gradient algorithms (SGAs) for optimization and sampling is often based on heuristics and trial-and-error rather than generalizable theory. We address this theory–practice gap by characterizing ...
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  Dependence of nonlinear effects on whistler-mode chorus wave bandwidth and amplitude: a perspective from diffusion coefficients 

  Gan, Longzhi; Li, Wen; Ma, Q.; Artemyev, A.; Albert, J. (2021-12-17)

  The electron resonant interaction with whistler-mode waves is characterized by transport in pitch angle–energy space. We calculate electron diffusion and advection coefficients (a simplified characterization of transport) ...
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  Juno Plasma Wave Observations at Ganymede. 

  Kurth, W.S.; Sulaiman, A.H.; Hospodarsky, G.B.; Menietti, J.D.; Mauk, B.H.; Clark, G.; Allegrini, F.; Valek, P.; Connerney, J.E.P.; Waite, J.H.; Bolton, S.J.; Imai, M.; Santolik, O.; Li, Wen; Duling, S.; Saur, J.; Louis, C. (American Geophysical Union (AGU), 2022-12-16)

  The Juno Waves instrument measured plasma waves associated with Ganymede's magnetosphere during its flyby on 7 June, day 158, 2021. Three distinct regions were identified including a wake, and nightside and dayside regions ...
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  Equations of motion near cyclotron resonance 

  Albert, J.; Artemyev, A.; Li, Wen; Gan, Longzhi; Ma, Q. (2022-06-16)

  This work compares several versions of the equations of motion for a test particle encountering cyclotron resonance with a single, field-aligned whistler mode wave. The gyro-averaged Lorentz equation produces both widespread ...
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  Dependence of nonlinear effects on whistler-mode wave bandwidth and amplitude: a perspective from diffusion coefficients 

  Gan, L.; Li, Wen; Ma, Q.; Artemyev, A.; Albert, J. (2022-05-16)

  The electron resonant interaction with whistler-mode waves is characterized by transport in pitch angle–energy space. We calculate electron diffusion and advection coefficients (a simplified characterization of transport) ...
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  Energetic charged particle observations during Juno's close flyby of Ganymede 

  Clark, G.; Kollmann, P.; Mauk, B.H.; Paranicas, C.; Haggerty, D.; Rymer, A.; Smith, H.T.; Saur, J.; Allegrini, F.; Duling, S.; Ebert, R.W.; Kurth, W.S.; Gladstone, R.; Greathouse, T.K.; Li, W.; Bagenal, F.; Connerney, J.E.P.; Bolton, S.; Szalay, J.R.; Sulaiman, A.H.; Hansen, C.J.; Turner, D.L. (American Geophysical Union (AGU), 2022-12-16)

  On 7 June 2021, NASA's Juno mission obtained unique measurements of Ganymede's magnetosphere during a close flyby that brought the spacecraft within ∼1,000 km of its surface. Here Jupiter Energetic particle Detector ...
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  An event of extreme relativistic and ultra-relativistic electron enhancements following the arrival of consecutive corotating interaction regions: coordinated observations by Van Allen Probes, Arase, THEMIS and Galileo satellites 

  Nasi, A.; Katsavrias, C.; Daglis, I.; Sandberg, I.; Aminalragia-Giamini, S.; Li, Wen; Miyoshi, Y.; Evans, H.; Mitani, T.; Matsuoka, A.; Shinohara, I.; Takashima, T.; Hori, T.; Balasis, G. (2022-08-30)

  [During July to October of 2019, a sequence of isolated Corotating Interaction Regions (CIRs) impacted the magnetosphere, for four consecutive solar rotations, without any interposed Interplanetary Coronal Mass Ejections. ...
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  Analytical results for phase bunching in the pendulum model of wave-particle interactions 

  Albert, J.; Artemyev, A.; Li, Wen; Gan, L.; Ma, Q. (2022-07-15)

  [Radiation belt electrons are strongly affected by resonant interactions with cyclotron-resonant waves. In the case of a particle passing through resonance with a single, coherent wave, a Hamiltonian formulation is ...
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  Unraveling the formation region and frequency of chorus spectral gaps 

  Li, J.; Bortnik, J.; Li, Wen; An, X.; Lyons, L. (2022-09-29)

  Electromagnetic ion cyclotron (EMIC) waves could cause a simultaneous dropout of radiation belt electrons and ring current protons. However, their effects on the dropout of both plasma populations have not been quantified ...

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