Identifying jittering-jet-shaped ejecta in the Cygnus Loop supernova remnant

Abstract

Analyzing images of the Cygnus Loop, a core-collapse supernova (CCSN) remnant, in different emission bands, we identify a point-symmetrical morphology composed of three symmetry axes that we attribute to shaping by three pairs of jets. The main jet axis has an elongated S shape, appearing as a faint narrow zone in visible and UV. We term it the S-shaped hose, and the structure of three symmetry lines, the point-symmetric wind rose. The two other lines connect a protrusion (an ear or a bulge) with a hole on the opposite side of the center (a nozzle or a cavity), structures that we identify in the X-ray, UV, visible, IR, and/or radio images. There is a well-known blowout at the southern end of the S-shaped hose, and we identify a possible opposite blowout at the northern end of the S-shaped hose. The point-symmetrical morphology of the Cygnus Loop is according to the expectation of the jittering jets explosion mechanism (JJEM) of CCSNe, where several to few tens of pairs of jets with stochastically varying directions explode the star. The three pairs of jets that shaped the wind-rose structure of the Cygnus Loop are the last energetic pairs of this series of jets. Our study further supports the JJEM as the main explosion mechanism of CCSNe.

arXiv comment11 pages, 5 figures. Published in the Astrophysical Journal

References in corpus (32)

• Three-Dimensional Simulations of Core-Collapse Supernovae: From Shock Revival to Shock Breakout
• A Chandra X-ray Survey of Ejecta in the Cassiopeia A Supernova Remnant
• Young Planetary Nebulae: Hubble Space Telescope Imaging and a New Morphological Classification System
• The 1.28 GHz MeerKAT Galactic Center Mosaic
• A Detailed Kinematic Map of Cassiopeia A's Optical Main Shell and Outer High-Velocity Ejecta
• Planck 2018 results. II. Low Frequency Instrument data processing
• Explaining the most energetic supernovae with an inefficient jet-feedback mechanism
• Core collapse supernova remnants with ears
• An HST Survey of the Highest-Velocity Ejecta in Cassiopeia A
• The imprints of the last jets in core collapse supernovae
• Interplay Between Neutrino Kicks and Hydrodynamic Kicks of Neutron Stars and Black Holes
• "Ears" formation in Supernova Remnants: Overhearing an interaction history with bipolar circumstellar structures
• G309.2-00.6 and jets in supernova remnants
• Supplying angular momentum to the jittering jets explosion mechanism using inner convection layers
• Three-dimensional GRMHD Simulations of Rapidly Rotating Stellar Core-Collapse
• Imprints of the jittering jets explosion mechanism in the morphology of the supernova remnant SNR 0540-69.3
• The sculpting of rectangular and jet-like morphologies in supernova remnants by anisotropic equatorially-confined progenitor stellar winds
• Panchromatic HST/WFC3 Imaging Studies of Young, Rapidly Evolving Planetary Nebulae. II. NGC 7027
• The implications of large binding energies of massive stripped core collapse supernova progenitors on the explosion mechanism
• Rectangular core-collapse supernova remnants: application to Puppis A
• The Early Interaction of the Planetary Nebula NGC 40 with the Interstellar Medium
• Gray Two-moment Neutrino Transport: Comprehensive Tests and Improvements for Supernova Simulations
• Numerically investigating the peculiar periphery of a supernova remnant in the medium with a density gradient: the case of RCW 103
• Morpho-kinematic properties of Wolf-Rayet planetary nebulae
• The jittering jets explosion mechanism (JJEM) in electron capture supernovae
• Jet - counter-jet asymmetry in the jittering jets explosion mechanism of supernovae
• Comparing jet-shaped point symmetry in cluster cooling flows and supernovae
• Morphokinematic modelling of the point-symmetric Cat's Eye, NGC 6543: Ring-like remnants of a precessing jet
• An explanation for the peculiar periphery of supernova remnant G309.2-0.6
• Investigating the morphology of the supernova remnant G349.7+00.2 in the medium with a density gradient
• Proper motion of Cygnus loop shock filaments
• Interaction of supernova blast waves with wind-driven shells: formation of "jets", "bullets", "ears", etc

Cited by in corpus (1)

• Simulating the shaping of point-symmetric structures in the jittering jets explosion mechanism