2006/09/26 by A. Schwope, Axel D. Schwope, Valeri Hambaryan +5 · 3 citations
Engineering · Physics and Astronomy · #Absorption (acoustics) #Astronomy #Astrophysical Phenomena and Observations #Astrophysics #Black-body radiation #EPIC #Geophysics and Sensor Technology #Interpretation (philosophy) #Line (geometry) #Neutron #Neutron star #Nuclear physics #Optics #Photon #Physics #Pulsars and Gravitational Waves Research #Radiation #Spectral line #astro-ph
paper · pdf · doi:10.1007/s10509-007-9375-1
published as Astrophys.SpaceSci.308:619-623,2007 · 4 pages, 1 figure, to appear in Astrophysics and Space Science, in the proceedings of "Isolated Neutron Stars: from the Interior to the Surface", edited by D. Page, R. Turolla and S. Zane
arxiv created 2006/09/26 · openalex publication_date 2007/03/14 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We present a first analysis of a deep X-ray spectrum of the isolated neutron star RBS1223 obtained with XMM-Newton. Spectral data from four new monitoring observations in 2005/2006 were combined with archival observations obtained in 2003 and 2004 to form a spin-phase averaged spectrum containing 290000 EPIC-pn photons. This spectrum shows higher complexity than its predecessors, and can be parameterised with two Gaussian absorption lines superimposed on a blackbody. The line centers, E2 ~ 2E1, could be regarded as supporting the cyclotron interpretation of the absorption features in a field B ~ 4 x 10**13 G. The flux ratio of those lines does not support this interpretation. Hence, either feature might be of truly atomic origin.