Low-frequency Waves due to Newborn Interstellar Pickup He+ Observed by the Ulysses Spacecraft

Autor:	Anastasia V. Marchuk, Charles W. Smith, Abigale S. Watson, Matthew R. Argall, Colin J. Joyce, Philip A. Isenberg, Bernard J. Vasquez, Nathan A. Schwadron, Maciej Bzowski, Marzena A. Kubiak, Neil Murphy
Rok vydání:	2021
Předmět:	Space and Planetary Science Physics::Space Physics Astronomy and Astrophysics
Zdroj:	The Astrophysical Journal. 923:185
ISSN:	1538-4357 0004-637X
DOI:	10.3847/1538-4357/ac2eb3
Popis:	We have surveyed magnetic field data from the Ulysses spacecraft and found examples of magnetic waves with the expected characteristics that point to excitation by newborn pickup He+. With interstellar neutrals as the likely source for the pickup ions, we have modeled the ion production rates and used them to produce wave excitation rates that we compare to the background turbulence rates. The source ions are thought to be always present, but the waves are seen when growth rates are comparable to or exceed the turbulence rates. With the exception of the fast latitude scans, and unlike the waves excited by newborn interstellar pickup H+, the waves are seen throughout the Ulysses orbit.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::fe915794ed52130e40083a706102dd57 https://doi.org/10.3847/1538-4357/ac2eb3 Zobrazit plný text záznamu