The Crab Nebula: High energy X-ray observation of a lunar occultation

Journal Article · Wed Oct 01 04:00:00 EDT 1975 · Astrophys. J., Lett., v. 201, no. 1, pp. L15-L19

DOI:https://doi.org/10.1086/181930· OSTI ID:4099401

Staubert, R; Kendziorra, E; Trumper, J; Reppin, C; Hoffman, J A; Pounds, K A; Giles, A B; Morrison, L V

A lunar occultation of the Crab Nebula was observed at X-ray energies above 15 keV by a scintillation counter on a Skylark rocket launched from Spain on 1974 October 7. The angular extent of the region of emission of 75 percent of the total flux between 15 and 150 keV (average photon energy 39 keV) along psoition angle 263degree is found to be 110''+25''. The offset of the centroid of the extended source is such that its projection to the west of NP 0532 is 8''plus-or-minus6''. The variation of size with energy, as found from this and other measurements, sets constraints on models for energy transfer along magnetic field lines in the Crab. (AIP)

• Research Organization: Astronomisches Institut der Universitat Tubingen
• Sponsoring Organization: USDOE
• NSA Number: NSA-33-018090
• OSTI ID: 4099401
• Journal Information: Astrophys. J., Lett., v. 201, no. 1, pp. L15-L19, Journal Name: Astrophys. J., Lett., v. 201, no. 1, pp. L15-L19; ISSN AJLEA
• Country of Publication: United States
• Language: English

Related Subjects

*CRAB NEBULA-- X RADIATION
640103* --Physics Research--Astrophysics & Cosmology--Quasi- Stellar
Radio & X-Ray Sources
COSMIC X-RAY SOURCES
ENERGY TRANSFER
LUMINOSITY
MOON
N56300* --Physics (Astrophysics & Cosmology)--Quasi-stellar
Radio & X-Ray Sources
PULSARS