SAX J1808.4-3658: high resolution spectroscopy and decrease of pulsed fraction at low energies Export

@article{citeulike:4216388, abstract = {XMM-Newton observed the accreting millisecond pulsar SAX J1808.4-3658 during its 2008 outburst. We present timing and spectral analyses of this observation, in particular the first pulse profile study below 2 keV, and the high-resolution spectral analysis of this source during the outburst. Combined spectral and pulse profile analyses suggest the presence of a strong unpulsed source below 2 keV that strongly reduces the pulsed fraction and a hard pulsed component that generates markedly double peaked profiles at higher energies. We also studied the high-resolution grating spectrum of SAX J1808.4-3658, and found several absorption edges and Oxygen absorption lines with whom we infer, in a model independent way, the interstellar column densities of several elements in the direction of SAX J1808.4-3658.}, archivePrefix = {arXiv}, author = {Patruno, Alessandro and Rea, Nanda and Altamirano, Diego and Linares, Manuel and Wijnands, R. and van der Klis, M.}, citeulike-article-id = {4216388}, citeulike-linkout-0 = {http://arxiv.org/abs/0903.3210}, citeulike-linkout-1 = {http://arxiv.org/pdf/0903.3210}, day = {18}, eprint = {0903.3210}, keywords = {1808, spectroscopy, x-ray}, month = {Mar}, posted-at = {2009-03-25 04:28:15}, priority = {2}, title = {SAX J1808.4-3658: high resolution spectroscopy and decrease of pulsed fraction at low energies}, url = {http://arxiv.org/abs/0903.3210}, year = {2009} }

TY - JOUR ID - citeulike:4216388 L3 - citeulike-article-id:4216388 N2 - XMM-Newton observed the accreting millisecond pulsar SAX J1808.4-3658 during its 2008 outburst. We present timing and spectral analyses of this observation, in particular the first pulse profile study below 2 keV, and the high-resolution spectral analysis of this source during the outburst. Combined spectral and pulse profile analyses suggest the presence of a strong unpulsed source below 2 keV that strongly reduces the pulsed fraction and a hard pulsed component that generates markedly double peaked profiles at higher energies. We also studied the high-resolution grating spectrum of SAX J1808.4-3658, and found several absorption edges and Oxygen absorption lines with whom we infer, in a model independent way, the interstellar column densities of several elements in the direction of SAX J1808.4-3658. TI - SAX J1808.4-3658: high resolution spectroscopy and decrease of pulsed fraction at low energies KW - 1808 KW - spectroscopy KW - x-ray AU - Patruno, Alessandro AU - Rea, Nanda AU - Altamirano, Diego AU - Linares, Manuel AU - Wijnands, R AU - van der Klis, M PY - 2009/Mar/18/ UR - http://arxiv.org/abs/0903.3210 ER -