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Observations of the Neuton Star RXJ0002.9 + 6246The High Resolution Imager (HRI) observation of the CTB1 region requested in the original proposal was performed and data received. The primary target, the candidate neutron star, was detected at the predicted intensity. As proposed, both timing and spatial extent analysis has been performed on the extracted photons. The preliminary timing analysis showed no evidence for the faint pulsations seen in the PSPC data. As the pulse fraction was rather small, this was not an unexpected result. We have, however, recently developed more sophisticated timing analysis capabilities and are in the process of reanalyzing the data to more accurately constrain the pulse fraction, if indeed any evidence for pulsation is found. We have supplemented the HRI observations with optical observations. Filter images, in BVR & I, have been obtained as well as spectra for candidate counterparts. As of this writing, the original analysis holds, i.e. the x-ray flux is not consistent with the L(sub x)/L(sub opt) ratios expected from the candidate stars within the 3 sigma positional error circles. HRI confirmation of the flux as well as the refinement of the position have allowed us to limit the candidate list and refine the original L(sub x)/L(sub opt) analysis.
Document ID
19990025887
Acquisition Source
Goddard Space Flight Center
Document Type
Contractor or Grantee Report
Authors
Hailey, Charles J.
(Columbia Univ. New York, NY United States)
Date Acquired
September 6, 2013
Publication Date
November 1, 1998
Subject Category
Astronomy
Report/Patent Number
CAL-3060
Report Number: CAL-3060
Funding Number(s)
CONTRACT_GRANT: NAG5-4759
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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