Observations of short large amplitude magnetic structures at the Kronian bow shock

Z. Bebesi, G. Erdős, K. Szegö

Research output: Contribution to journalArticle

Abstract

We present observations of Short Large Amplitude Magnetic Structures (SLAMS) upstream of the quasi-parallel bow shock of Saturn. Cassini surveyed the quasi-parallel bow shock regime during 2004 and 2005, and from this time period we chose four events for a detailed study. For our analysis we used the measurements of the Cassini Plasma Spectrometer (CAPS) and the Magnetometer (MAG). Locally the SLAMS act as a fast mode shock wave, and we observed possible ion beam reflection, multiple beams, deceleration and plasma heating of the solar wind protons. These features are in agreement with the near Earth observations. We also detected whistler precursor waves multiple times, which was also documented in studies of the Earth's foreshock region. Since the frequency of the upstream ULF waves detected at Saturn is lower than it is at Earth, it also has an effect on the spatial extension of the SLAM structures, which arise from these waves. With only one spacecraft's measurements it is not possible to study the SLAMS with the same efficiency as with the four-point measurements of the CLUSTER probes, but the basic observational features and the description of their evolutional characteristics are summarized.

Original languageEnglish
Pages (from-to)306-317
Number of pages12
JournalIcarus
Volume333
DOIs
Publication statusPublished - Nov 15 2019

Fingerprint

bows
shock
Saturn
upstream
supersonic low altitude missile
plasma
foreshock
heating
plasma heating
deceleration
magnetometer
shock wave
magnetometers
solar wind
shock waves
spacecraft
spectrometer
ion beams
probe
spectrometers

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Observations of short large amplitude magnetic structures at the Kronian bow shock. / Bebesi, Z.; Erdős, G.; Szegö, K.

In: Icarus, Vol. 333, 15.11.2019, p. 306-317.

Research output: Contribution to journalArticle

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