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RESEARCH PRODUCT
The discovery of the serendipitous X-ray pulsar SAX J1802.7–2017 from a BeppoSAX observation of GX 9+1
R. IariaG. AugelloLuciano BurderiG. LavagettoLuigi StellaN. R. RobbaT. Di SalvoT. Di Salvosubject
PhysicsNuclear and High Energy PhysicsPulse periodPulsarAstronomyAstrophysicsOrbital periodOrbital separationAtomic and Molecular Physics and OpticsX-ray pulsardescription
Abstract We have discovered a new X-ray source, SAX J1802.7–2017, ∼22′ away from the bright X-ray source GX 9+1, during a BeppoSAX observation of this latter one on 2001 September 16-20. The count rate of SAX J1802.7–2017 is comparable to the background (∼0.04 c/s) during the first 50 ks of the observation, then the count rate shows a large variability increasing up to ∼0.28 c/s. We have performed a temporal analysis finding that SAX J1802.7–2017 has a pulse period of ∼139.61 s, a projected orbital separation a x sin i of 48±5 lt-s and an orbital period of 3.7 +0.4 −0.2 days, allowing to classify the new object as an X-ray pulsar.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2004-06-01 | Nuclear Physics B - Proceedings Supplements |