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Title:
Hubble Space Telescope and Chandra Monitoring of the Crab Synchrotron Nebula
Authors:
Hester, J. J.; Mori, K.; Burrows, D.; Gallagher, J. S.; Graham, J. R.; Halverson, M.; Kader, A.; Michel, F. C.; Scowen, P.
Affiliation:
AA(Department of Physics and Astronomy, Arizona State University, Box 871504, Tempe, AZ 85287-1504 .), AB(Department of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Laboratory, University Park, PA 16802.; Department of Earth and Space Sciences, Osaka University, Osaka 560-0043, Japan.), AC(Department of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Laboratory, University Park, PA 16802.), AD(Department of Astronomy, University of Wisconsin at Madison, 5534 Sterling Hall, 475 North Charter Street, Madison, WI 53706.), AE(Department of Astronomy, University of California at Berkeley, 601 Campbell Hall, Berkeley, CA 94720-3411.), AF(Department of Astronomy, University of Wisconsin at Madison, 5534 Sterling Hall, 475 North Charter Street, Madison, WI 53706.), AG(Department of Physics and Astronomy, Arizona State University, Box 871504, Tempe, AZ 85287-1504 .), AH(Department of Physics and Astronomy, Rice University, MS 61, 6100 South Main, Houston, TX 77005-1892.), AI(Department of Physics and Astronomy, Arizona State University, Box 871504, Tempe, AZ 85287-1504 .)
Publication:
The Astrophysical Journal, Volume 577, Issue 1, pp. L49-L52. (ApJL Homepage)
Publication Date:
09/2002
Origin:
UCP
ApJ Keywords:
ISM: Individual: Name: Crab Nebula, ISM: Jets and Outflows, Stars: Pulsars: Individual: Name: Crab Pulsar, ISM: Supernova Remnants
DOI:
10.1086/344132
Bibliographic Code:
2002ApJ...577L..49H

Abstract

We report the results of coordinated Hubble Space Telescope and Chandra observations of the Crab synchrotron nebula. Similar dynamical structures, including equatorial wisps moving outward at ~0.5c, are seen in both passbands. The inner X-ray ring is a variable, irregular structure from which wisps and diffuse emission emerge. The X-ray/visible jet to the southeast of the pulsar is a true jet. The data support the interpretation that the inner ring and a highly dynamical feature at the base of the jet are unstable quasi-stationary shocks in the ``cold'' equatorial wind and polar jet from the pulsar.
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