A likely optical counterpart of the G292.0+1.8 pulsar wind nebula

Abstract

G292.0+1.8 is the Cas A-like supernova remnant containing the young pulsar PSR J1124-5916, which powers a compact torus-like pulsar wind nebula with a jet visible in X-rays. We have performed deep optical observations of the pulsar field to detect the optical counterpart of the pulsar and its nebula. The observations were carried out using the direct imaging mode of FORS2 at the ESO VLT/UT1 telescope in the V, R, and I bands. We also analyzed archival images obtained with the Chandra/ACIS-I, ACIS-S, and HRC-S in X-rays. In all three optical bands we detect a faint elliptical nebulosity, whose brightness peak and center position are consistent at a sub-arcsecond level with the X-ray position of the pulsar. The field is densely packed with background stars, but after subtraction of these stars the morphology of the object and the orientation of its major axis appear to be in a good agreement with the brightest inner part of the pulsar nebula torus region seen almost edge on in X-rays. Within the nebulosity we do not resolve any point-like optical object that could be identified with the pulsar and estimate its contribution to the observed nebulosity flux as <~20%. Extracting the X-ray spectrum from the physical region equivalent to the optical source position and extent and combining that with the measured optical fluxes, we compile a tentative multi-wavelength spectrum of the inner part of the nebula. Within uncertainties of the interstellar extinction towards G292.0+1.8 it is reminiscent of either the Crab or PSR B540-69 and J0205+6449 pulsar wind nebula spectra. The position, morphology, and spectral properties of the detected nebulosity suggest that it is the likely optical counterpart of the pulsar plus its wind nebula system in G292.0+1.8.

arXiv comment10 pages, 6 figures, A&A, accepted

References in corpus (21)

• Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds
• Young core collapse supernova remnants and their supernovae
• Chandra imaging of the X-ray nebula powered by pulsar B1509-58
• Mapping the X-ray Emitting Ejecta in Cassiopeia A with Chandra
• PSR J1124-5916: discovery of a young, energetic pulsar in the supernova remnant G292.0+1.8
• X-ray emission from the old pulsar B0950+08
• A Multi-Frequency Radio Study of Supernova Remnant G292.0+1.8 and its Pulsar Wind Nebula
• 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
• A Pulsar Wind Nebula 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
• The young pulsar PSR B0540-69.3 and its synchrotron nebula in the optical and X-rays
• The Vela Pulsar in the Near-Infrared
• The Crab pulsar and its red knot in the near-infrared
• A possible optical counterpart to the old nearby pulsar J0108-1431
• Optical identification of the 3C 58 pulsar wind nebula
• Search for the Optical Counterpart of the Vela Pulsar X-ray Nebula
• Far-flung Filaments of Ejecta in the Young Supernova Remnant G292.0+1.8
• Subaru optical observations of the old pulsar PSR B0950+08
• Possible optical detection of a fast, nearby radio pulsar PSR B1133+16
• Optical Observations of PSR J0205+6449

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• The Second Fermi Large Area Telescope Catalog of Gamma-ray Pulsars
• 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
• On the PSR B1133+16 optical counterpart
• Is there room for highly magnetized pulsar wind nebulae among those non-detected at TeV?
• The PSR J1124-5916 wind nebula in the near-infrared
• Observations of three young gamma-ray pulsars with the Gran Telescopio Canarias
• Optical Observations of PSR J0205+6449 - the next optical pulsar?
• PSR B0656+14: the unified outlook from the infrared to X-rays