What is recorded here?
The OSO-8 team reported X-ray polarization of the Crab in two bands from 1976 quick-look satellite data. A later phase-selected analysis by a partly different author team combined 1976 and 1977 observations and measured approximately 19% polarization at 2.6 and 5.2 keV, supporting a synchrotron interpretation.
Source-linked catalogue note. A detailed explanatory guide has not yet been prepared for this entry.
Scientific scope
The 1976 quick-look result includes the nebula and pulsar, whereas the 1978 selection attributes an off-pulse interval to the nebula based on an earlier occultation limit; this is not an unconditional proof of zero pulsar contamination. The 1978 analysis reuses 1976 observations and is not an independent replication. Results depend on modulation calibration and background subtraction, with substantial relative background at 5.2 keV; the early paper notes a systematic difference between its two detectors below two standard deviations. An earlier 1972 rocket detection predates the OSO-8 reports and is a separate contribution.
Read the original work
- A precision measurement of the X-ray polarization of the Crab Nebula without pulsar contamination
- Measurement of the X-ray polarization of the Crab Nebula
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People and systems
M. C. Weisskopf; E. H. Silver; H. L. Kestenbaum; K. S. Long; R. Novick; G. G. Cohen; R. S. Wolff
These are the listed authors of the cited contribution sources. Paper authorship does not quantify individual effort. An incomplete list is explicitly marked; same names are not automatically merged.
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English catalogue narrative
OSO-8 measurements of Crab X-ray polarization
The OSO-8 team reported X-ray polarization of the Crab in two bands from 1976 quick-look satellite data. A later phase-selected analysis by a partly different author team combined 1976 and 1977 observations and measured approximately 19% polarization at 2.6 and 5.2 keV, supporting a synchrotron interpretation.
Scientific scope
The 1976 quick-look result includes the nebula and pulsar, whereas the 1978 selection attributes an off-pulse interval to the nebula based on an earlier occultation limit; this is not an unconditional proof of zero pulsar contamination. The 1978 analysis reuses 1976 observations and is not an independent replication. Results depend on modulation calibration and background subtraction, with substantial relative background at 5.2 keV; the early paper notes a systematic difference between its two detectors below two standard deviations. An earlier 1972 rocket detection predates the OSO-8 reports and is a separate contribution.
Reading status
This is a source-linked WRS catalogue note. A full explanatory guide and independent scientific reconstruction have not been completed for this entry. Read the identified original work for its complete narrative and arguments.
People and systems
M. C. Weisskopf; E. H. Silver; H. L. Kestenbaum; K. S. Long; R. Novick; G. G. Cohen; R. S. Wolff
These are the listed authors of the cited contribution sources. Paper authorship does not quantify individual effort. An incomplete list is explicitly marked; same names are not automatically merged.