Observations of the Neuton Star RXJ0002.9 + 6246

Details Observations of the Neuton Star RXJ0002.9 + 6246 Observations of the Neuton Star RXJ0002.9 + 6246

Nov 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998cal..conf.....h&link_type=abstract

Technical Report, CAL-3060 Columbia Astrophysics Lab.

Astronomy and Astrophysics

Astronomy

5

Neutron Stars, Periodic Variations, X Ray Astronomy, Stellar Spectra, Rosat Mission, X Ray Spectra

Scientific paper

The 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 Lx/Lopt 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 Lx/Lopt analysis.

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