EPJ Web of Conferences
Volume 64, 2014Physics at the Magnetospheric Boundary
|Number of page(s)||4|
|Section||Observations of Compact Objects (Part 1)|
|Published online||08 January 2014|
The reflection component in NS LMXBs
1 Dipartimento di Fisica e Chimica, via Archirafi 36, 90123 Palermo, Italy
2 ICE, IEEC-CSIC, Barcelona, Spain
3 INAF Osservatorio Astronomico di Cagliari, Italy
4 INAF-IASF di Palermo, Italy
a e-mail: firstname.lastname@example.org
Published online: 8 January 2014
Thanks to the good spectral resolution and large effective area of the EPIC/PN instrument on board of XMM-Newton, we have at hand a large number of observations of accreting low-mass X-ray binaries, that allow for the fist time a comprehensive view on the characteristics of the reflection component at different accretion regimes and to probe the effects of a magnetosphere on its formation. We focus here on a comparative analysis of the reflection component from a series of spectroscopic studies on selected sources: 4U 1705-44, observed both in the soft and hard state, the pulsating ms pulsars SAX J1808.4-3658 and IGR J17511-3057, and the intermittent pulsar HETE J1900-2455. Although the sources can present very similar accretion rates and continuum shapes, the reflection parameters do not generally result the same, moreover the effect of a magnetosphere on the formation of the reflection component appears elusive.
© Owned by the authors, published by EDP Sciences, 2014
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