Details

Autor(en) / Beteiligte

• Forot, M
• Hermsen, W
• Renaud, M
• Laurent, P
• Grenier, I
• Goret, P
• Khelifi, B
• Kuiper, L

Titel

High-Energy Particles in the Wind Nebula of Pulsar B1509–58 as Seen by INTEGRAL

Ist Teil von

• The Astrophysical journal, 2006-11, Vol.651 (1), p.L45-L48

Ort / Verlag

Chicago, IL: IOP Publishing

Erscheinungsjahr

2006

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• We present observations with the INTEGRAL IBIS telescope of the wind nebula powered by the young pulsar B1509-58, and we discuss the spatial and spectral properties of the unpulsed emission in the 20-200 keV energy band. The source extension and orientation along the northwest-southeast axis correspond to the jet emission seen at keV and TeV energies. The hard X-ray spectrum is consistent with the earlier BeppoSAX measurements. It follows a power law with a photon index a= -2.12 c 0.05 up to 160 keV. A possible break at this energy is found at the 2.9 aconfidence level. The 0.1-100 keV data are consistent with synchrotron aging of pairs in the jet and yield a magnetic field strength of 22-33 kG for a bulk velocity of 0.3c-0.5c. The synchrotron cutoff energy thus corresponds to a maximum electron energy of 400-730 TeV.