The Shock Dynamics of Heterogeneous YSO Jets:3D Simulations Meet Multi-epoch Observations
Abstract
High-resolution observations of young stellar object (YSO) jets show them to be composed of many small-scale knots or clumps. In this paper, we report results of 3D numerical simulations designed to study how such clumps interact and create morphologies and kinematic patterns seen in emission line observations. Our simulations focus on clump scale dynamics by imposing velocity differences between spherical, over-dense regions, which then lead to the formation of bow shocks as faster clumps overtake slower material. We show that much of the spatial structure apparent in emission line images of jets arises from the dynamics and interactions of these bow shocks. Our simulations show a variety of time-dependent features, including bright knots associated with Mach stems where the shocks intersect, a “frothy” emission structure that arises from the presence of the Nonlinear Thin Shell Instability along the surfaces of the bow shocks, and the merging and fragmentation of clumps. Our simulations use a new non-equilibrium cooling method to produce synthetic emission maps in Hα and [S II]. These are directly compared to multi-epoch Hubble Space Telescope observations of Herbig–Haro jets. We find excellent agreement between features seen in the simulations and the observations in terms of both proper motionmore »
- Authors:
-
- Univ. of Rochester, NY (United States)
- Rice Univ., Houston, TX (United States)
- Imperial College, London (United Kingdom)
- Publication Date:
- Research Org.:
- Rice Univ., Houston, TX (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA); National Science Foundation (NSF); Space Telescope Science Institute
- OSTI Identifier:
- 1462315
- Report Number(s):
- DOE-Rice-2037-2
Journal ID: ISSN 1538-4357
- Grant/Contract Number:
- SC0001063; NA0002037; OCI-1053575; HST-AR-11251.01-A; HST-AR-12128.01-A
- Resource Type:
- Accepted Manuscript
- Journal Name:
- The Astrophysical Journal (Online)
- Additional Journal Information:
- Journal Name: The Astrophysical Journal (Online); Journal Volume: 837; Journal Issue: 2; Journal ID: ISSN 1538-4357
- Publisher:
- Institute of Physics (IOP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS; Herbig; Haro objects; hydrodynamics; instabilities; ISM: jets and outflows; shock waves; stars: jets
Citation Formats
Hansen, E. C., Frank, A., Hartigan, P., and Lebedev, S. V. The Shock Dynamics of Heterogeneous YSO Jets:3D Simulations Meet Multi-epoch Observations. United States: N. p., 2017.
Web. doi:10.3847/1538-4357/aa5ca8.
Hansen, E. C., Frank, A., Hartigan, P., & Lebedev, S. V. The Shock Dynamics of Heterogeneous YSO Jets:3D Simulations Meet Multi-epoch Observations. United States. https://doi.org/10.3847/1538-4357/aa5ca8
Hansen, E. C., Frank, A., Hartigan, P., and Lebedev, S. V. Fri .
"The Shock Dynamics of Heterogeneous YSO Jets:3D Simulations Meet Multi-epoch Observations". United States. https://doi.org/10.3847/1538-4357/aa5ca8. https://www.osti.gov/servlets/purl/1462315.
@article{osti_1462315,
title = {The Shock Dynamics of Heterogeneous YSO Jets:3D Simulations Meet Multi-epoch Observations},
author = {Hansen, E. C. and Frank, A. and Hartigan, P. and Lebedev, S. V.},
abstractNote = {High-resolution observations of young stellar object (YSO) jets show them to be composed of many small-scale knots or clumps. In this paper, we report results of 3D numerical simulations designed to study how such clumps interact and create morphologies and kinematic patterns seen in emission line observations. Our simulations focus on clump scale dynamics by imposing velocity differences between spherical, over-dense regions, which then lead to the formation of bow shocks as faster clumps overtake slower material. We show that much of the spatial structure apparent in emission line images of jets arises from the dynamics and interactions of these bow shocks. Our simulations show a variety of time-dependent features, including bright knots associated with Mach stems where the shocks intersect, a “frothy” emission structure that arises from the presence of the Nonlinear Thin Shell Instability along the surfaces of the bow shocks, and the merging and fragmentation of clumps. Our simulations use a new non-equilibrium cooling method to produce synthetic emission maps in Hα and [S II]. These are directly compared to multi-epoch Hubble Space Telescope observations of Herbig–Haro jets. We find excellent agreement between features seen in the simulations and the observations in terms of both proper motion and morphologies. Furthermore we conclude that YSO jets may be dominated by heterogeneous structures and that interactions between these structures and the shocks they produce can account for many details of YSO jet evolution.},
doi = {10.3847/1538-4357/aa5ca8},
journal = {The Astrophysical Journal (Online)},
number = 2,
volume = 837,
place = {United States},
year = {Fri Mar 10 00:00:00 EST 2017},
month = {Fri Mar 10 00:00:00 EST 2017}
}
Web of Science
Works referenced in this record:
An R -matrix with pseudostates approach to the electron-impact excitation of H I for diagnostic applications in fusion plasmas
journal, March 2000
- Anderson, H.; Ballance, C. P.; Badnell, N. R.
- Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 33, Issue 6
An R-matrix with pseudo-states approach to the electron-impact excitation of H I for diagnostic applications in fusion plasmas
journal, March 2002
- Anderson, H.; Ballance, C. P.; Badnell, N. R.
- Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 35, Issue 6
The Structure of the Inner HH 34 Jet from Optical Integral Field Spectroscopy
journal, February 2007
- Beck, Tracy L.; Riera, A.; Raga, A. C.
- The Astronomical Journal, Vol. 133, Issue 4
Hydromagnetic flows from accretion discs and the production of radio jets
journal, August 1982
- Blandford, R. D.; Payne, D. G.
- Monthly Notices of the Royal Astronomical Society, Vol. 199, Issue 4
The structure and evolution of radiatively cooling jets
journal, September 1990
- Blondin, John M.; Fryxell, Bruce A.; Konigl, Arieh
- The Astrophysical Journal, Vol. 360
Forbidden-line emission and infrared excesses in T Tauri stars - Evidence for accretion-driven mass loss?
journal, May 1990
- Cabrit, Sylvie; Edwards, Suzan; Strom, Stephen E.
- The Astrophysical Journal, Vol. 354
Three‐dimensional Magnetohydrodynamic Simulations of Radiatively Cooling, Pulsed Jets
journal, October 2001
- Cerqueira, Adriano H.; de Gouveia Dal Pino, Elisabete M.
- The Astrophysical Journal, Vol. 560, Issue 2
The evolution of magnetic tower jets in the laboratory
journal, May 2007
- Ciardi, A.; Lebedev, S. V.; Frank, A.
- Physics of Plasmas, Vol. 14, Issue 5
Episodic Magnetic Bubbles and Jets: Astrophysical Implications from Laboratory Experiments
journal, January 2009
- Ciardi, Andrea; Lebedev, Sergey V.; Frank, Adam
- The Astrophysical Journal, Vol. 691, Issue 2
SIMULATING MAGNETOHYDRODYNAMICAL FLOW WITH CONSTRAINED TRANSPORT AND ADAPTIVE MESH REFINEMENT: ALGORITHMS AND TESTS OF THE AstroBEAR CODE
journal, May 2009
- Cunningham, Andrew J.; Frank, Adam; Varnière, Peggy
- The Astrophysical Journal Supplement Series, Vol. 182, Issue 2
Heating and Ionization of HI Regions
journal, September 1972
- Dalgarno, A.; McCray, R. A.
- Annual Review of Astronomy and Astrophysics, Vol. 10, Issue 1
MHD simulations of radiative jets from young stellar objects: H$\mathsf{\alpha}$ emission
journal, March 2006
- De Colle, F.; Raga, A. C.
- Astronomy & Astrophysics, Vol. 449, Issue 3
The Dynamics of Internal Working Surfaces in Magnetohydrodynamic Jets
journal, December 2008
- De Colle, Fabio; Raga, Alejandro C.; Esquivel, Alejandro
- The Astrophysical Journal, Vol. 689, Issue 1
Derivation of the critical angle for Mach reflection for strong shock waves
journal, April 1992
- De Rosa, M.; Famà, F.; Palleschi, V.
- Physical Review A, Vol. 45, Issue 8
Effects of Cooling on the Propagation of Magnetized Jets
journal, February 1998
- Frank, A.; Ryu, D.; Jones, T. W.
- The Astrophysical Journal, Vol. 494, Issue 1
Stability of radiative shocks with time-dependent cooling
journal, June 1988
- Gaetz, T. J.; Edgar, Richard J.; Chevalier, Roger A.
- The Astrophysical Journal, Vol. 329
Magnetohydrodynamic Effects on Pulsed Young Stellar Object Jets. i. 2.5d Simulations
journal, February 2015
- Hansen, E. C.; Frank, A.; Hartigan, P.
- The Astrophysical Journal, Vol. 800, Issue 1
Numerical simulations of Mach stem formation via intersecting bow shocks
journal, December 2015
- Hansen, E. C.; Frank, A.; Hartigan, P.
- High Energy Density Physics, Vol. 17
Disk Accretion and Mass Loss from Young Stars
journal, October 1995
- Hartigan, Patrick; Edwards, Suzan; Ghandour, Louma
- The Astrophysical Journal, Vol. 452
When Shock Waves Collide
journal, June 2016
- Hartigan, P.; Foster, J.; Frank, A.
- The Astrophysical Journal, Vol. 823, Issue 2
Laboratory Experiments, Numerical Simulations, and Astronomical Observations of Deflected Supersonic Jets: Application to hh 110
journal, October 2009
- Hartigan, P.; Foster, J. M.; Wilde, B. H.
- The Astrophysical Journal, Vol. 705, Issue 1
FLUID DYNAMICS OF STELLAR JETS IN REAL TIME: THIRD EPOCH HUBBLE SPACE TELESCOPE IMAGES OF HH 1, HH 34, AND HH 47
journal, July 2011
- Hartigan, P.; Frank, A.; Foster, J. M.
- The Astrophysical Journal, Vol. 736, Issue 1
Proper Motions of the HH 47 Jet Observed with the Hubble Space Telescope
journal, November 2005
- Hartigan, Patrick; Heathcote, Steve; Morse, Jon A.
- The Astronomical Journal, Vol. 130, Issue 5
Radiative bow shock models of Herbig-Haro objects
journal, May 1987
- Hartigan, Patrick; Raymond, John; Hartmann, Lee
- The Astrophysical Journal, Vol. 316
Hubble Space Telescope Observations of the HH 47 Jet: Narrowband Images
journal, September 1996
- Heathcote, Steve; Morse, Jon A.; Hartigan, Patrick
- The Astronomical Journal, Vol. 112
On the Structure and Stability of Magnetic Tower jets
journal, September 2012
- Huarte-Espinosa, M.; Frank, A.; Blackman, E. G.
- The Astrophysical Journal, Vol. 757, Issue 1
The Magnetohydrodynamics of Supersonic Gas Clouds: MHD Cosmic Bullets and Wind‐swept Clumps
journal, December 1996
- Jones, T. W.; Ryu, Dongsu; Tregillis, I. L.
- The Astrophysical Journal, Vol. 473, Issue 1
On the hydrodynamic interaction of shock waves with interstellar clouds. 1: Nonradiative shocks in small clouds
journal, January 1994
- Klein, Richard I.; McKee, Christopher F.; Colella, Philip
- The Astrophysical Journal, Vol. 420
Magnetic tower outflows from a radial wire array Z-pinch
journal, July 2005
- Lebedev, S. V.; Ciardi, A.; Ampleford, D. J.
- Monthly Notices of the Royal Astronomical Society, Vol. 361, Issue 1
Hydrodynamic Interaction of Strong Shocks with Inhomogeneous Media. I. Adiabatic Case
journal, September 2002
- Poludnenko, A. Y.; Frank, A.; Blackman, E. G.
- The Astrophysical Journal, Vol. 576, Issue 2
High resolution simulations of a variable HH jet
journal, January 2007
- Raga, A. C.; De Colle, F.; Kajdič, P.
- Astronomy & Astrophysics, Vol. 465, Issue 3
Kinematics of the HH 111 Jet from the Space Telescope Imaging Spectrograph
journal, January 2002
- Raga, A. C.; Noriega-Crespo, A.; Reipurth, B.
- The Astrophysical Journal, Vol. 565, Issue 1
Bow Shock Fragmentation Driven by a Thermal Instability in Laboratory Astrophysics Experiments
journal, December 2015
- Suzuki-Vidal, F.; Lebedev, S. V.; Ciardi, A.
- The Astrophysical Journal, Vol. 815, Issue 2
Atomic Data for Astrophysics. I. Radiative Recombination Rates for H-like, He-like, Li-like, and Na-like Ions over a Broad Range of Temperature
journal, March 1996
- Verner, D. A.; Ferland, G. J.
- The Astrophysical Journal Supplement Series, Vol. 103
The dynamic and gravitational instabilities of spherical shocks
journal, November 1983
- Vishniac, E. T.
- The Astrophysical Journal, Vol. 274
Nonlinear instabilities in shock-bounded slabs
journal, June 1994
- Vishniac, Ethan T.
- The Astrophysical Journal, Vol. 428
Self-Convergence of Radiatively Cooling Clumps in the Interstellar Medium
journal, September 2010
- Yirak, Kristopher; Frank, Adam; Cunningham, Andrew J.
- The Astrophysical Journal, Vol. 722, Issue 1
The Evolution of Hetergeneous “Clumpy Jets”: a Parameter Study
journal, February 2012
- Yirak, Kristopher; Schroeder, Ed; Frank, Adam
- The Astrophysical Journal, Vol. 746, Issue 2
Works referencing / citing this record:
Simulating radiative magnetohydrodynamical flows with astrobear : implementation and applications of non-equilibrium cooling
journal, September 2018
- Hansen, E. C.; Hartigan, P.; Frank, A.
- Monthly Notices of the Royal Astronomical Society, Vol. 481, Issue 3
Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilities
journal, April 2019
- Lebedev, S. V.; Frank, A.; Ryutov, D. D.
- Reviews of Modern Physics, Vol. 91, Issue 2
The Role of Magnetic Fields in Protostellar Outflows and Star Formation
journal, July 2019
- Pudritz, Ralph E.; Ray, Tom P.
- Frontiers in Astronomy and Space Sciences, Vol. 6
The Time Evolution of the HH 1 Jet Modeled as a Variable Outflow
journal, October 2018
- Castellanos-Ramírez, A.; Raga, A. C.; Rodríguez-González, A.
- The Astrophysical Journal, Vol. 867, Issue 1
The Role of Magnetic Fields in Protostellar Outflows and Star Formation
text, January 2019
- Pudritz, Ralph E.; Ray, Tom P.
- arXiv