WebA brief analysis of the proton parallel and oblique firehose instability is presented from a fluid perspective and the results are compared to kinetic theory solutions obtained by the WHAMP code. It is shown that the c… WebDec 2, 2024 · The present study highlights the role of proton firehose instability in defining parallel temperatures of protons. Considering reality, we chose a bi-Maxwellian model for …
Statistical Study of the Relationship Between Pi1/2‐Band Wave …
WebDec 2, 2024 · The right-hand polarized low frequency growing proton firehose (PFH) mode is excited by nonresonant protons under the condition T ∥P > T ⊥p, which is frequently encountered in radially expanding solar wind.Previously, the dispersion and the associated instability with the proton firehose mode are studied in the linear 30 30. M. The firehose instability (or hose-pipe instability) is a dynamical instability of thin or elongated galaxies. The instability causes the galaxy to buckle or bend in a direction perpendicular to its long axis. After the instability has run its course, the galaxy is less elongated (i.e. rounder) than before. Any sufficiently thin stellar … See more The firehose instability can be analyzed exactly in the case of an infinitely thin, self-gravitating sheet of stars. If the sheet experiences a small displacement $${\displaystyle h(x,t)}$$ in the $${\displaystyle z}$$ direction, … See more The firehose instability is believed to play an important role in determining the structure of both spiral and elliptical galaxies and of dark matter haloes. • As noted by Edwin Hubble and others, elliptical galaxies are rarely if ever observed to be … See more At wavelengths shorter than the actual vertical thickness of a galaxy, the bending is stabilized. The reason is that stars in a finite-thickness … See more • Stellar dynamics See more phisnom age
[2004.08280] In situ evidence of firehose instability in …
WebNote that the firehose instability can be responsible for the excitation/amplification of different kinetic wave modes, particularly, KAWs observed around DFs (Chen & Wu, … WebThe conditions imposed by the firehose instability have been extensively studied using idealized approaches that ignore the mutual effects of electrons and protons. Recently, … WebIt is revealed that the firehose instability is mainly controlled by the shock strength with little influence of the shock angle contrary to the mirror instability for which both parameters intervene. We confirm results showing that the heliosheath plasma observed by Voyager 1 immediately behind the termination shock is mirror unstable. Similar ... phismeths