Measurement of the spatial structure of the x-ray source in the Crab Nebula. I. Observation of the 1974 November 3 lunar occultation
Journal Article
·
· Astrophys. J., Lett., v. 202, no. 1, pp. L15-L19
OSTI ID:4108781
The 1974 November 3 (UT) lunar occultation of the Crab Nebula has been observed in the 1.5--17.5 keV X-ray range, at a position angle of 255degree. The western portion of the nebula and the pulsar NP 0532 were seen in reappearance. Analysis of the data reveals that the western extent of the X-ray volume is approximately 48'' west of the pulsar. The centroid of the nonpulsed X-ray flux for the portion of the nebula observed is located about 20'' west of the pulsar, and the FWHM of the best-fitting Gaussian distribution is 42''plus-or-minus2'' in the observed energy range. (AIP)
- Research Organization:
- Columbia Astrophysics Laboratory, Columbia University
- NSA Number:
- NSA-33-018110
- OSTI ID:
- 4108781
- Journal Information:
- Astrophys. J., Lett., v. 202, no. 1, pp. L15-L19, Other Information: Orig. Receipt Date: 30-JUN-76
- Country of Publication:
- United States
- Language:
- English
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