English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The millisecond pulsar PSR B1259-63 and the Be star SS2883 are situated in ahighly eccentric binary system, with orbital period ~3.4 years. We report onhard X-ray observations obtained with the INTEGRAL satellite close to the 2004periastron passage. These are the first imaging observations of this system inthe hard X-ray range (>20 keV) and allow the emission of PSR B1259-63 to beseparated from that of a nearby unidentified variable source which may havecontaminated previous hard X-ray observations of this system. Using theIBIS/ISGRI instrument we measured a flux of ~2--6 mCrab in the 20--200 keVrange, with a power law spectrum of photon index of 1.3 +/- 0.5.Comment: Accepted for publication in Astronomy and Astrophysics Letters. See  paper for author affiliation

INTEGRAL observations of the PSR B1259-63/SS2883 system after the 2004 periastron passage