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Chieregato

Fakultäten » Mathematisch-naturwissenschaftliche Fakultät » Physik-Institut » Prof. Dr. Philippe Jetzer » Chieregato

Completed research project

Title / Titel XMM-Newton Detection of Pulsations and a Spectral Feature in the X-Ray Emission of the Isolated Neutron Star 1RXS J214303.7+065419/RBS 1774
PDF Abstract (PDF, 14 KB)
Summary / Zusammenfassung We report on the results of a deep XMM-Newton observation of RBS 1774, the most recent dim isolated neutron star candidate found in the ROSAT archive data. Spectral and timing analysis of the high-quality pn and MOS data confirm the association of this source with an isolated neutron star. The spectrum is thermal and blackbody-like, and there is evidence at a significance level >4 sigma that the source is an X-ray pulsar with a spin period of 9.437 s. Spectral fitting reveals the presence of an absorption feature at ~0.7 keV, but at this level data do not have enough resolution to allow us to discriminate between an absorption line or an edge. We compare the newly measured properties of RBS 1774 with those of other known dim isolated neutron stars and discuss possible interpretations for the absorption feature.
Publications / Publikationen The Astrophysical Journal, Volume 627, Issue 1, pp.
397-403.
Project leadership and contacts /
Projektleitung und Kontakte
M. Chieregato (Project Leader)  
Prof Dr. Philippe Jetzer  
Funding source(s) /
Unterstützt durch
Universität Zürich (position pursuing an academic career), Others
 
In collaboration with /
In Zusammenarbeit mit
Zane, S.
Cropper, M
Duration of Project / Projektdauer Jul 2004 to Jul 2005