Bow shocks, bow waves, and dust waves. II. Beyond the rip point
arXiv:1903.07774 · doi:10.1093/mnras/stz1130
Abstract
Dust waves are a result of gas-grain decoupling in a stream of dusty plasma that flows past a luminous star. The radiation field is sufficiently strong to overcome the collisional coupling between grains and gas at a "rip-point", where the ratio of radiation pressure to gas pressure exceeds a critical value of roughly 1000. When the rip point occurs outside the hydrodynamic bow shock, a separate dust wave may form, decoupled from the gas shell, which can either be drag-confined or inertia-confined, depending on the stream density and relative velocity. In the drag-confined case, there is a minimum stream velocity of roughly 60 km/s that allows a steady-state stagnant drift solution for the dust wave apex. For lower relative velocities, the dust dynamics close to the axis exhibit a limit cycle behavior (rip and snap back) between two different radii. Strong coupling of charged grains to the plasma's magnetic field can modify these effects, but for a quasi-parallel field orientation the results are qualitatively similar to the non-magnetic case. For a quasi-perpendicular field, on the other hand, the formation of a decoupled dust wave is strongly suppressed.
arXiv comment20 pages, 15 figures, MNRAS submitted (revised to correct arXiv links in reference list)
References in corpus (53)
- Astropy: A Community Python Package for Astronomy
- The Astropy Project: Building an inclusive, open-science project and status of the v2.0 core package
- Dust Grain Size Distributions and Extinction in the Milky Way, LMC, and SMC
- A Grid of NLTE Line-Blanketed Model Atmospheres of O-type Stars
- Gas- and dust evolution in protoplanetary disks
- A Grid of NLTE Line-Blanketed Model Atmospheres of Early B-type Stars
- Photoelectric Emission from Interstellar Dust: Grain Charging and Gas Heating
- Radiative torques: Analytical Model and Basic Properties
- The 2013 Release of Cloudy
- Radiative Torques on Interstellar Grains: I. Superthermal Spinup
- On Radiation Pressure in Static, Dusty HII Regions
- A far-infrared survey of bow shocks and detached shells around AGB stars and red supergiants
- Radiation-magnetohydrodynamic simulations of HII regions and their associated PDRs in turbulent molecular clouds
- Magnetohydronamic Evolution of HII Regions in Molecular Clouds: Simulation Methodology, Tests, and Uniform Media
- Grain size distributions and photo-electric heating in ionized media
- The Fundamentally Different Dynamics of Dust and Gas in Molecular Clouds
- Computing the dust distribution in the bowshock of a fast moving, evolved star
- Photoelectric Emission from Dust Grains Exposed to Extreme Ultraviolet and X-ray Radiation
- Disruption of Molecular Clouds by Expansion of Dusty H II Regions
- A Survey for H Pulsar Bow Shocks
- Thermal Dust Emission from Proplyds, Unresolved Disks, and Shocks in the Orion Nebula
- Resonant drag instability of grains streaming in fluids
- Interstellar Weather Vanes: GLIMPSE Mid-Infrared Stellar-Wind Bowshocks in M17 and RCW49
- Is the dust-to-gas ratio constant in molecular clouds?
- Gas and multi-species dust dynamics in viscous protoplanetary discs: the importance of the dust back-reaction
- Grain Destruction in Interstellar Shocks
- Blowing in the wind: The dust wave surrounding Ori AB
- Dust dynamics and evolution in expanding HII regions. I. Radiative drift of neutral and charged grains
- Bow shock nebulae of hot massive stars in a magnetized medium
- Ubiquitous Instabilities of Dust Moving in Magnetized Gas
- Sensitivity of PDR Calculations to Microphysical Details
- Dust dynamics and evolution in HII regions - II. Effects of dynamical coupling between dust and gas
- Detecting stellar-wind bubbles through infrared arcs in HII regions
- The Dynamics of Charged Dust in Magnetized Molecular Clouds
- On the observability of bow shocks of Galactic runaway OB stars
- The Resonant Drag Instability (RDI): Acoustic Modes
- Evolution of Blister-Type HII Regions in a Magnetized Medium
- High-Resolution X-ray Imaging of the Colliding Wind Shock in WR147
- Radiation-pressure-driven dust waves inside bursting interstellar bubbles
- Infrared Photometric Properties of 709 Candidate Stellar Bowshock Nebulae
- Multi-Epoch VLBA Observations of the Compact Wind-Collision Region in the Quadruple System Cyg OB2 #5
- Turbulence in the Ionized Gas of the Orion Nebula
- Clustering and dynamic decoupling of dust grains in turbulent molecular clouds
- Bow shocks, bow waves, and dust waves. I. Strong coupling limit
- An astrosphere around the blue supergiant kappa Cas: possible explanation of its filamentary structure
- Properties of bow-shock sources at the Galactic center
- A bimodal dust grain distribution in the IC 434 HII region
- Modelling multi-wavelength observational characteristics of bow shocks from runaway early type stars
- Dust cleansing of star-forming gas I: Did radiation from bright stars affect the chemical composition of the Sun and of M67?
- Chandra Observations of WR147 Reveal a Double X-ray Source
- Non-monotonic spatial distribution of the interstellar dust in astrospheres: finite gyroradius effect
- The effect of radiation pressure on spatial distribution of dust inside HII regions
- True versus apparent shapes of bow shocks
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- Wind nebulae and supernova remnants of very massive stars
- 3D MHD astrospheres: applications to IRC-10414 and Betelgeuse
- Simulating observable structures due to a perturbed interstellar medium in front of astrospheric bow shocks in 3D MHD
- Bow shocks, bow waves, and dust waves. III. Diagnostics
- First observed interaction of the circumstellar envelope of an S-star with the environment of Sgr A*
- And then they were two: detection of non-thermal radio emission from the bow shocks of two runaway stars
- Pulsar wind nebulae of runaway massive stars
- Polarization simulations of stellar wind bow shock nebulae. II. The case of dust scattering
- Dust in RCW 58: clues to common envelope channel formation?
- Modelling O-star astrospheres with different relative speeds between the ISM and the star: 2D and 3D MHD model comparison
- Numerical models for the dust in RCW 120
- 3D mapping of the Wolf-Rayet nebula M1-67: clues for post-common envelope evolution in massive stars
- The role of wind driving in OB star bow nebulae