Panoramic Views of the Cygnus Loop

Abstract

We present a complete atlas of the Cygnus Loop supernova remnant in the light of [O III] (5007), H alpha, and [S II] (6717, 6731). Despite its shell-like appearance, the Cygnus Loop is not a current example of a Sedov-Taylor blast wave. Rather, the optical emission traces interactions of the supernova blast wave with clumps of gas. The surrounding interstellar medium forms the walls of a cavity through which the blast wave now propagates, including a nearly complete shell in which non-radiative filaments are detected. The Cygnus Loop blast wave is not breaking out of a dense cloud, but is instead running into confining walls. The interstellar medium dominates not only the appearance of the Cygnus Loop but also the continued evolution of the blast wave. If this is a typical example of a supernova remnant, then global models of the interstellar medium must account for such significant blast wave deceleration.

28 pages AAS Latex, 28 black+white figures, 6 color figures. To be published in The Astrophysical Journal Supplement Series

References in corpus (2)

• Supernova Remnants Associated with Molecular Clouds in the Large Magellanic Cloud
• The ROSAT-HRI X-Ray Survey of the Cygnus Loop

Cited by in corpus (43)

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• The Massive Star Population of Cygnus OB2
• RCW 86: A Type Ia Supernova in a Wind-Blown Bubble
• Possible Charge-Exchange X-Ray Emission in the Cygnus Loop Detected with Suzaku
• Fermi Large Area Telescope Observations of the Cygnus Loop Supernova Remnant
• Evolution of high-energy particle distribution in Supernova Remnants
• Far Ultraviolet Spectra of a Non-Radiative Shock Wave in the Cygnus Loop
• The Cygnus Loop's Distance, Properties, and Environment Driven Morphology
• Shock Speed, Cosmic Ray Pressure, and Gas Temperature in the Cygnus Loop
• Shell Shock and Cloud Shock: Results from Spatially-Resolved X-ray Spectroscopy with Chandra in the Cygnus Loop
• The Plasma Structure of the Cygnus Loop from the Northeastern Rim to the Southwestern Rim
• An Isolated, Recently Shocked ISM Cloud in the Cygnus Loop SNR
• A Detailed Analysis of a Cygnus Loop Shock-Cloud Interaction
• Progenitor Mass Distribution of Core-Collapse Supernova Remnants in Our Galaxy and Magellanic Clouds based on Elemental Abundances
• HESS J1640-465 - an exceptionally luminous TeV gamma-ray supernova remnant
• Is the Cygnus Loop two supernova remnants?
• GSH 138-01-94, an old supernova remnant in the far outer Galaxy
• Discovery of Extensive Optical Emission Associated with the X-ray Bright, Radio Faint Galactic SNR G156.2+5.7
• High Forbidden-to-resonance Line Ratio of OVII Discovered in the Cygnus Loop
• SPEAR Far Ultraviolet Spectral Images of the Cygnus Loop
• A Comparison of Ultraviolet, Optical, and X-Ray Imagery of Selected Fields in the Cygnus Loop
• Scientific Objectives of the Hot Universe Baryon Surveyor (HUBS) Mission
• The Ejecta Distributions of the Heavy Elements in the Cygnus Loop
• FUSE Observations of the Cygnus Loop: OVI Emission from a Nonradiative Shock
• Chandra Imaging and Spectroscopy of the Eastern XA Region of the Cygnus Loop Supernova Remnant
• X-ray Emission from Charge Exchange in the Cygnus Loop SNR
• Line-of-sight Shell Structure of the Cygnus Loop
• Multiple accelerated particle populations in the Cygnus Loop with Fermi-LAT
• New high-frequency radio observations of the Cygnus Loop supernova remnant with the Italian radio telescopes
• A Distance Estimate to the Cygnus Loop Based on the Distances to Two Stars Located Within the Remnant
• Soft X-ray Spectroscopy of the Cygnus Loop Supernova Remnant
• Global Far-Ultraviolet Properties of the Cygnus Loop
• Environmental Impact on the Southeast Limb of the Cygnus Loop
• Constraining the Age and Distance of the Galactic Supernova Remnant G156.2+5.7 by H-alpha Expansion Measurements
• The Abundance Inhomogeneity in the Northern Rim of the Cygnus Loop
• Shocking Clouds in the Cygnus Loop
• A Suborbital Payload for Soft X-ray Spectroscopy of Extended Sources
• Discovery of a Pulsar Wind Nebula Candidate in the Cygnus Loop
• New continuum and polarization observations of the Cygnus Loop with FAST II. Images and analyses
• Unbiased Spectroscopic Study of the Cygnus Loop with LAMOST. I. Optical Properties of Emission Lines and the Global Spectrum
• Discovery of non-equilibrium ionization plasma associated with the North Polar Spur and Loop I
• First Detection of Ar-K Line Emission from the Cygnus Loop