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GLAST testing of a pulsar model matching H.E.S.S. observations of LS 5039

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dc.creator Sierpowska-Bartosik, Agnieszka
dc.creator Torres, Diego F.
dc.date 2008-06-29T14:33:31Z
dc.date 2008-06-29T14:33:31Z
dc.date 2008-01-22
dc.date.accessioned 2017-01-31T02:13:32Z
dc.date.available 2017-01-31T02:13:32Z
dc.identifier The Astrophysical Journal Letters 674(2): L89-L92 (2008)
dc.identifier 0004-637X (Print)
dc.identifier 1538-4357 (Online)
dc.identifier http://hdl.handle.net/10261/5430
dc.identifier 10.1086/529376
dc.identifier.uri http://dspace.mediu.edu.my:8181/xmlui/handle/10261/5430
dc.description 4 pages.-- Printed version published on Feb 20, 2008.
dc.description LS 5039 is one of a handful of X-ray binaries that have been recently detected at high-energy γ-rays, in this case, by the High Energy Stereoscopic System (H.E.S.S.). The nature of this system is unknown: both a black hole and a pulsar have been invoked as possible compact object companions. Here we work with a model of the high-energy phenomenology of the system in which it is assumed that the companion object is a pulsar rotating around an O6.5 V star in a ~3.9 day orbit. The model assumes two different sets of power-law spectral parameters of the interacting primary leptons corresponding to the two orbital phase intervals defined by H.E.S.S. as having different γ-ray spectra and very high energy (VHE) cutoffs. We show that the H.E.S.S. phenomenology is completely explained by this model. We present predictions for photons with lower energies (for E > 1 GeV), subject to test in the forthcoming months with the GLAST satellite. We find that GLAST will be able to judge on this model within 1 year.
dc.description We acknowledge support by grants MEC-AYA 2006-00530 and CSIC-PIE 200750I029.
dc.description Peer reviewed
dc.format 680827 bytes
dc.format application/pdf
dc.language eng
dc.publisher American Astronomical Society
dc.publisher University of Chicago Press
dc.relation http://dx.doi.org/10.1086/529376
dc.rights openAccess
dc.subject X-ray binaries (individual LS 5039)
dc.subject γ-rays: observations
dc.subject γ-rays: theory
dc.subject High-Energy Stereoscopy Array (H.E.S.S.) Telescope
dc.title GLAST testing of a pulsar model matching H.E.S.S. observations of LS 5039
dc.type Artículo

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