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Spatially-resolved Spectroscopy of the IC443 Pulsar Wind Nebula and Environs
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Author and Affiliation:
Swartz, D. A.(Universities Space Research Association, Huntsville, AL, United States);
Weisskopf, M. C.(NASA Marshall Space Flight Center, Huntsville, AL, United States);
Zavlin, V. E.(Universities Space Research Association, Huntsville, AL, United States);
Bucciantini, N.(Istituto di Astrofisica Spaziale e Fisica Cosmica (INAF-IASF), Rome, Italy);
Clarke, T. E.(Naval Research Lab., United States);
Karovska, M.(Smithsonian Astrophysical Observatory, Cambridge, MA, United States);
Pavlov, G. G.(Pennsylvania State Univ., PA, United States);
O'Dell, S. L.(NASA Marshall Space Flight Center, Huntsville, AL, United States);
vanderHorst, A J.(Amsterdam Univ., Netherlands);
Yukita, M.(Alabama Univ., AL, United States)
Abstract: Deep Chandra ACIS observations of the region around the putative pulsar, CXOU J061705.3+222117, in the supernova remnant IC443 reveal, for the first time, a ring-like morphology surrounding the pulsar and a jet-like structure oriented roughly north-south across the ring and through the pulsar location. The observations further confirm that (1) the spectrum and flux of the central object are consistent with a rotation-powered pulsar interpretation, (2) the non-thermal surrounding nebula is likely powered by the pulsar wind, and (3) the thermal-dominated spectrum at greater distances is consistent with emission from the supernova remnant. The cometary shape of the nebula, suggesting motion towards the southwest (or, equivalently, flow of ambient medium to the northeast), appears to be subsonic; there is no evidence for a strong bow shock, and the circular ring is not distorted by motion through the ambient medium.
Publication Date: Apr 07, 2013
Document ID:
20130013924
(Acquired Jul 17, 2013)
Subject Category: ASTRONOMY
Report/Patent Number: M13-2543
Document Type: Oral/Visual Presentation
Meeting Information: 13th Meeting of the High Energy Astrophysicsl Division; 7-12 Apr. 2013; Monterey, CA; United States
Meeting Sponsor: American Astronomical Society; United States
Financial Sponsor: NASA Marshall Space Flight Center; Huntsville, AL, United States
Organization Source: NASA Marshall Space Flight Center; Huntsville, AL, United States
Description: 1p; In English; Original contains color illustrations
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright; Distribution as joint owner in the copyright
NASA Terms: CRAB NEBULA; MORPHOLOGY; PULSARS; SHOCK WAVES; SPECTROSCOPY; STELLAR ROTATION; SUPERNOVA REMNANTS; X RAY ASTROPHYSICS FACILITY; X RAY SPECTRA; X RAY SPECTROMETERS
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