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X-Ray Analysis of the Proper Motion and Pulsar Wind Nebula for PSR J1741-2054We obtained six observations of PSR J1741-2054 using the Chandra ACIS-S detector totaling approx.300 ks. By registering this new epoch of observations to an archival observation taken 3.2 yr earlier using X-ray point sources in the field of view, we have measured the pulsar proper motion at micron = 109 +/- 10 mas yr(exp. -1) in a direction consistent with the symmetry axis of the observed H(alpha) nebula. We investigated the inferred past trajectory of the pulsar but find no compelling association with OB associations in which the progenitor may have originated. We confirm previous measurements of the pulsar spectrum as an absorbed power law with photon index gamma = 2.68 +/- 0.04, plus a blackbody with an emission radius of (4.5(+3.2/-2.5))d(0.38) km, for a DM-estimated distance of 0.38d(0.38) kpc and a temperature of 61.7 +/- 3.0 eV. Emission from the compact nebula is well described by an absorbed power law model with a photon index of gamma = 1.67 +/- 0.06, while the diffuse emission seen as a trail extending northeast of the pulsar shows no evidence of synchrotron cooling. We also applied image deconvolution techniques to search for small-scale structures in the immediate vicinity of the pulsar, but found no conclusive evidence for such structures.
Document ID
20160004992
Document Type
Reprint (Version printed in journal)
Authors
Auchettl, Katie (Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Slane, Patrick (Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Romani, Roger W. (Stanford Univ. Stanford, CA, United States)
Posselt, Bettina (Pennsylvania State Univ. University Park, PA, United States)
Pavlov, George G. (Pennsylvania State Univ. University Park, PA, United States)
Kargaltsev, Oleg (George Washington Univ. Washington, DC, United States)
Ng, C-Y. (Hong Kong Univ. Hong Kong)
Temim, Tea (Maryland Univ. College Park, MD, United States)
Weisskopf, Martin C. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Bykov, Andrei (Ioffe (A. F.) Physical-Technical Inst. Saint Petersburg, Russian Federation)
Swartz, Douglas (NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
April 12, 2016
Publication Date
March 24, 2015
Publication Information
Publication: The Astrophysical Journal
Volume: 802
Issue: 1
Subject Category
Astrophysics
Astronomy
Report/Patent Number
GSFC-E-DAA-TN30807
Funding Number(s)
CONTRACT_GRANT: NNG06EO90A
Distribution Limits
Public
Copyright
Other
Keywords
Analysis
X-Ray
Pulsar