The Astrophysical Journal Letters (Jan 2023)
Dispersive Suprathermal Ion Events Observed by the Parker Solar Probe Mission
- S. T. Alnussirat,
- R. Livi,
- D. E. Larson,
- A. Rahmati,
- P. L. Whittlesey,
- O. Romeo,
- S. T. Badman,
- Milo Buitrago-Casas,
- Juan Carlos Martínez Oliveros,
- M. Pulupa,
- S. D. Bale,
- J. Huang,
- J. Verniero,
- N. Raouafi,
- Donald Mitchell,
- D. J. McComas,
- Matt Hill,
- Christina Cohen
Affiliations
- S. T. Alnussirat
- ORCiD
- Space Sciences Laboratory, University of California , Berkeley, CA 94720-7450, USA ; [email protected]
- R. Livi
- ORCiD
- Space Sciences Laboratory, University of California , Berkeley, CA 94720-7450, USA ; [email protected]
- D. E. Larson
- ORCiD
- Space Sciences Laboratory, University of California , Berkeley, CA 94720-7450, USA ; [email protected]
- A. Rahmati
- ORCiD
- Space Sciences Laboratory, University of California , Berkeley, CA 94720-7450, USA ; [email protected]
- P. L. Whittlesey
- ORCiD
- Space Sciences Laboratory, University of California , Berkeley, CA 94720-7450, USA ; [email protected]
- O. Romeo
- ORCiD
- Space Sciences Laboratory, University of California , Berkeley, CA 94720-7450, USA ; [email protected]
- S. T. Badman
- ORCiD
- Center for Astrophysics , Harvard & Smithsonian, Cambridge, MA 02138, USA
- Milo Buitrago-Casas
- ORCiD
- Space Sciences Laboratory, University of California , Berkeley, CA 94720-7450, USA ; [email protected]
- Juan Carlos Martínez Oliveros
- ORCiD
- Space Sciences Laboratory, University of California , Berkeley, CA 94720-7450, USA ; [email protected]
- M. Pulupa
- ORCiD
- Space Sciences Laboratory, University of California , Berkeley, CA 94720-7450, USA ; [email protected]
- S. D. Bale
- ORCiD
- Space Sciences Laboratory, University of California , Berkeley, CA 94720-7450, USA ; [email protected]; Physics Department, University of California , Berkeley, CA 94720-7300, USA
- J. Huang
- ORCiD
- Space Sciences Laboratory, University of California , Berkeley, CA 94720-7450, USA ; [email protected]
- J. Verniero
- ORCiD
- Heliophysics Science Division, NASA Goddard Space Flight Center , Greenbelt, MD 20771, USA
- N. Raouafi
- ORCiD
- Johns Hopkins Applied Physics Laboratory, Johns Hopkins University , MD 20723, USA
- Donald Mitchell
- ORCiD
- Johns Hopkins Applied Physics Laboratory, Johns Hopkins University , MD 20723, USA
- D. J. McComas
- ORCiD
- Department of Astrophysical Sciences, Princeton University , Princeton, NJ 08544, USA
- Matt Hill
- ORCiD
- Johns Hopkins Applied Physics Laboratory, Johns Hopkins University , MD 20723, USA
- Christina Cohen
- ORCiD
- California Institute of Technology , Pasadena, CA 91125, USA
- DOI
- https://doi.org/10.3847/2041-8213/acf21c
- Journal volume & issue
-
Vol. 954,
no. 1
p. L32
Abstract
During Encounter 11, Parker Solar Probe observed a low-energy dispersive ions event of solar origin. The event was observed in the SPAN-I and IS⊙IS EPI-Lo sensors. The event started at a few MeV energy in the EPI-Lo sensor and progressed down in energy to ≈1 keV and merged with the bulk of the solar wind. This event is substantially different from typical solar energetic particles because the energetic population shows a distinct peak in the energy spectrum that descends in energy (not a power-law tail). In this Letter, we explore this event’s nature, origin, and characteristics.
Keywords
