AKARI Infrared Observations of the Supernova Remnant G292.0+1.8: Unveiling Circumstellar Medium and Supernova Ejecta

Abstract

We present the results of AKARI observations of the O-rich supernova remnant G292.0+1.8 using six IRC and four FIS bands covering 2.7-26.5 um and 50-180 um, respectively. The AKARI images show two prominent structures; a bright equatorial ring structure and an outer elliptical shell structure. The equatorial ring structure is clumpy and incomplete with its western end opened. The outer shell is almost complete and slightly squeezed along the north-south direction. The central position of the outer shell is ~ 1' northwest from the embedded pulsar and coincides with the center of the equatorial ring structure. The equatorial ring and the elliptical shell structures were partly visible in optical and/or X-rays, but they are much more clearly revealed in our AKARI images. There is no evident difference in infrared colors of the two prominent structures, which is consistent with the previous proposition that both structures are of circumstellar origin. However, we have detected faint infrared emission of a considerably high 15 to 24 um ratio associated with the supernova ejecta in the southeastern and northwestern areas. Our IRC spectra show that the high ratio is at least partly due to the emission lines from Ne ions in the supernova ejecta material. In addition we detect a narrow, elongated feature outside the SNR shell. We derive the physical parameters of the infrared-emitting dust grains in the shocked circumstellar medium and compare the result with model calculations of dust destruction by a SN shock. The AKARI results suggest that the progenitor was at the center of the infrared circumstellar shell in red supergiant stage and that the observed asymmetry in the SN ejecta could be a result of either a dense circumstellar medium in the equatorial plane and/or an asymmetric explosion.

24 pages, 8 figures, 6 tables; Accepted for publication in ApJ

References in corpus (23)

• The Infrared Astronomical Mission AKARI
• The Infrared Camera (IRC) for AKARI - Design and Imaging Performance
• The Far-Infrared Surveyor (FIS) for AKARI
• Dust Destruction in the High-Velocity Shocks Driven by Supernovae in the Early Universe
• Neon Fine-Structure Line Emission By X-ray Irradiated Protoplanetary Disks
• Near-infrared and Mid-infrared Spectroscopy with the Infrared Camera (IRC) for AKARI
• Spitzer Space Telescope Infrared Imaging and Spectroscopy of the Crab Nebula
• Spitzer Space Telescope Observations of Kepler's Supernova Remnant: A Detailed Look at the Circumstellar Dust Component
• Dust Destruction in Fast Shocks of Core-Collapse Supernova Remnants in the Large Magellanic Cloud
• Birth Kick Distributions and the Spin-Kick Correlation of Young Pulsars
• Infrared Echoes near the Supernova Remnant Cassiopeia A
• Spitzer Spectral Mapping of Supernova Remnant Cassiopeia A
• Far-infrared and sub-mm observations of the Crab nebula
• A Half-Megasecond Chandra Observation of the Oxygen-Rich Supernova Remnant G292.0+1.8
• Ejecta, Dust, and Synchrotron Radiation in B0540-69.3: A More Crab-Like Remnant than the Crab
• Infrared Echoes Reveal the Shock Breakout of the Cas A Supernova
• Expanding Ejecta in the Oxygen-Rich Supernova Remnant G292.0+1.8: Direct Measurement through Proper Motions
• [Fe II] and H2 filaments in the Supernova Remnant G11.2-0.3: Supernova Ejecta and Presupernova Circumstellar Wind
• Probing the Proper Motion of the Central Compact Object in Puppis-A with the Chandra High Resolution Camera
• The Shape of Cas A
• Far-flung Filaments of Ejecta in the Young Supernova Remnant G292.0+1.8
• Dense Iron Ejecta and Core-collapse Supernova Explosion in the Young Supernova Remnant G11.2-0.3
• Spitzer Spectroscopy of the Galactic Supernova Remnant G292.0+1.8: Structure and Composition of the Oxygen-Rich Ejecta

Cited by in corpus (19)

• Dust production 680-850 million years after the Big Bang
• RCW 86: A Type Ia Supernova in a Wind-Blown Bubble
• Dust grain growth in the interstellar medium of 5<z<6.5 quasars
• Comparing Neutron Star Kicks to Supernova Remnant Asymmetries
• Spatially-resolved dust properties of the GRB 980425 host galaxy
• Dusty Blastwaves of Two Young LMC Supernova Remnants: Constraints on Postshock Compression
• Galactic distributions of carbon- and oxygen-rich AGB stars revealed by the AKARI mid-infrared all-sky survey
• Infrared Supernova Remnants and their Infrared to X-ray Flux Ratios
• Origin of the dust emission from Tycho's SNR
• Detailed X-Ray Mapping of the Shocked Ejecta and Circumstellar Medium in the Galactic Core-Collapse Supernova Remnant G292.0+1.8
• The First Reported Infrared Emission from the SN 1006 Remnant
• Spitzer Imaging and Spectral Mapping of the Oxygen-Rich Supernova Remnant G292.0+1.8
• Dust Cooling in Supernova Remnants in the Large Magellanic Cloud
• X-ray ejecta kinematics of the Galactic core-collapse supernova remnant G292.0+1.8
• Far-Infrared Luminous Supernova Remnant Kes 17
• Near-Infrared Spectroscopy of Infrared-Excess Stellar Objects in the Young Supernova Remnant G54.1+0.3
• The PSR J1124-5916 wind nebula in the near-infrared
• The Cold Dust Content of the Oxygen-Rich Supernova Remnant G292.0+1.8
• SNR G292.0+1.8: A Remnant of a Low-Mass Progenitor Stripped-Envelope Supernova