The G292.0+1.8 pulsar wind nebula in the mid-infrared

Abstract

G292.0+1.8 is a Cas A-like supernova remnant that contains the young pulsar PSR J1124-5916 powering a compact torus-like pulsar wind nebula visible in X-rays. A likely counterpart to the nebula has been detected in the optical VRI bands. To confirm the counterpart candidate nature, we examined archival mid-infrared data obtained with the Spitzer Space Telescope. Broad-band images taken at 4.5, 8, 24, and 70 microns were analyzed and compared with available optical and X-ray data. The extended counterpart candidate is firmly detected in the 4.5 and 8 micron bands. It is brighter and more extended in the bands than in the optical, and its position and morphology agree well with the coordinates and morphology of the torus-like pulsar wind nebula in X-rays. The source is not visible in 24 and 70 micron images, which are dominated by bright emission from the remnant shell and filaments. We compiled the infrared fluxes of the nebula, which probably contains a contribution from an unresolved pulsar in its center, with the optical and X-ray data. The resulting unabsorbed multiwavelength spectrum is described by power laws of significantly steeper slope in the infrared-optical than in X-rays, implying a double-knee spectral break between the optical and X-rays. The 24 and 70 microns flux upper limits suggest a second break and a flatter spectrum at the long wavelength limit. These features are common to two other pulsar wind nebulae associated with the remnants B0540-69.3 and 3C 58 and observed in all three ranges. The position, morphology, and spectral properties of the detected source allow us to comfirm that it is the infrared-optical counterpart to both the pulsar and its wind nebula system in the G292.0+1.8 supernova remnant.

arXiv comment5 pages, 2 figures

References in corpus (17)

• The Wavelength Dependence of Interstellar Extinction from 1.25 to 8.0 microns Using GLIMPSE Data
• Infrared Extinction Toward Nearby Star-Forming Regions
• Young core collapse supernova remnants and their supernovae
• Spitzer 70-micron Source Counts in GOODS-North
• Spitzer Space Telescope Infrared Imaging and Spectroscopy of the Crab Nebula
• PSR J1124-5916: discovery of a young, energetic pulsar in the supernova remnant G292.0+1.8
• A Half-Megasecond Chandra Observation of the Oxygen-Rich Supernova Remnant G292.0+1.8
• An X-Ray Pulsar in the Oxygen-Rich Supernova Remnant G292.0+1.8
• The Infrared Detection of the Pulsar Wind Nebula in the Galactic Supernova Remnant 3C 58
• Ejecta, Dust, and Synchrotron Radiation in B0540-69.3: A More Crab-Like Remnant than the Crab
• The young pulsar PSR B0540-69.3 and its synchrotron nebula in the optical and X-rays
• The Vela Pulsar in the Near-Infrared
• Subaru optical observations of the two middle-aged pulsars PSR B0656+14 and Geminga
• Optical and infrared observations of the Crab Pulsar and its nearby knot
• The Crab pulsar and its red knot in the near-infrared
• Optical identification of the 3C 58 pulsar wind nebula
• Possible optical detection of a fast, nearby radio pulsar PSR B1133+16

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• Properties of Young Pulsar Wind Nebulae: TeV Detectability and Their Pulsar Properties
• The near-infrared detection of PSR B0540-69 and its nebula
• The Vela and Geminga pulsars in the mid-infrared
• Spitzer Imaging and Spectral Mapping of the Oxygen-Rich Supernova Remnant G292.0+1.8
• The PSR J1124-5916 wind nebula in the near-infrared