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Fluid dynamics of stellar jets in real time: Third Epoch Hubble Space Telescope images of HH 1, HH 34, AND HH 47

Journal Article · · The Astrophysical Journal
 [1];  [2];  [3];  [4];  [4];  [3];  [4];  [5];  [5]
  1. Rice Univ., Houston, TX (United States); Rice University
  2. Univ. of Rochester, Rochester, NY (United States)
  3. Atomic Weapons Establishment (AWE), Berkshire (United Kingdom)
  4. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  5. General Atomics, San Diego, CA (United States)
+ Show Author Affiliations
We present new, third-epoch Hubble Space Telescope Hα and [S II] images of three Herbig-Haro (HH) jets (HH 1&2, HH 34, and HH 47) and compare the new images with those from previous epochs. The high spatial resolution, coupled with a time series whose cadence is of order both the hydrodynamic and radiative cooling timescales of the flow, allows us to follow the hydrodynamic/magnetohydrodynamic evolution of an astrophysical plasma system in which ionization and radiative cooling play significant roles. Cooling zones behind the shocks are resolved, so it is possible to identify which way material flows through a given shock wave. The images show that heterogeneity is paramount in these jets, with clumps dominating the morphologies of both bow shocks and their Mach disks. This clumpiness exists on scales smaller than the jet widths and determines the behavior of many of the features in the jets. Evidence also exists for considerable shear as jets interact with their surrounding molecular clouds, and in several cases we observe shock waves as they form and fade where material emerges from the source and as it proceeds along the beam of the jet. Fine structure within two extended bow shocks may result from Mach stems that form at the intersection points of oblique shocks within these clumpy objects. Taken altogether, these observations represent the most significant foray thus far into the time domain for stellar jets, and comprise one of the richest data sets in existence for comparing the behavior of a complex astrophysical plasma flow with numerical simulations and laboratory experiments.
Research Organization:
Rice Univ., Houston, TX (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Contributing Organization:
AWE LANL LLE General Atomics LLNL
Grant/Contract Number:
NA0000904
OSTI ID:
1334724
Alternate ID(s):
OSTI ID: 21578329
Journal Information:
The Astrophysical Journal, Journal Name: The Astrophysical Journal Journal Issue: 1 Vol. 736; ISSN 0004-637X
Publisher:
Institute of Physics (IOP)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (20)

SPHERE/ZIMPOL observations of the symbiotic system R Aquarii: I. Imaging of the stellar binary and the innermost jet clouds journal June 2017
Two epoch spectro-imagery of FS Tau B outflow system journal July 2019
Scaling laws for dynamical plasma phenomena journal October 2018
A Survey of Irradiated Pillars, Globules, and jets in the Carina Nebula journal February 2015
THE KINEMATICS OF HH 34 FROM HST IMAGES WITH A NINE-YEAR TIME BASELINE journal March 2012
SPITZER OBSERVATIONS OF THE HH 1/2 SYSTEM: THE DISCOVERY OF THE COUNTERJET journal April 2012
Alma Observations of the hh 46/47 Molecular Outflow journal August 2013
Bow Shock Fragmentation Driven by a Thermal Instability in Laboratory Astrophysics Experiments journal December 2015
The impact of recent advances in laboratory astrophysics on our understanding of the cosmos journal February 2012
COLLISIONALLY EXCITED FILAMENTS IN HUBBLE SPACE TELESCOPE Hα AND Hβ IMAGES OF HH 1/2 journal December 2014
Simulating radiative magnetohydrodynamical flows with astrobear : implementation and applications of non-equilibrium cooling journal September 2018
Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilities journal April 2019
Variability and Jet Activity in the YSO MHO 3252 Y3 in Serpens South journal September 2018
The Time Evolution of the HH 1 Jet Modeled as a Variable Outflow journal October 2018
Proper Motions and Shock Wave Dynamics in the HH 7-11 Stellar Jet journal May 2019
Detection of Continuum Submillimeter Emission Associated with Candidate Protoplanets journal July 2019
SPHERE/ZIMPOL observations of the symbiotic system R Aquarii. I. Imaging of the stellar binary and the innermost jet clouds text January 2017
The Impact of Recent Advances in Laboratory Astrophysics on our Understanding of the Cosmos text January 2011
Spitzer observations of the HH 1/2 system. The discovery of the counterjet text January 2012
Two epoch spectro-imagery of FS Tau B outflow system text January 2019

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Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
97 MATHEMATICS AND COMPUTING
Herbig-Haro objects
ISM: jets and outflows
hydrodynamics