2001/11/20 by A. Tiengo, E. Goehler, E. Göhler +2 · 5 citations
Earth and Planetary Sciences · Physics and Astronomy · #Astrophysical Phenomena and Observations #High-pressure geophysics and materials #Pulsars and Gravitational Waves Research #astro-ph
paper · pdf · doi:10.1051/0004-6361:20011718
7 pages, 5 figures, accepted for publication in A&A
arxiv created 2001/11/20 · openalex publication_date 2002/02/01 · arxiv updated 2009/12/01 · openalex created_date 2020/11/23 · openalex updated_date 2026/07/31
We report on an observation of the anomalous X–ray pulsar 1E 1048.1–5937 performed with the XMM-Newton satellite. The phase averaged spectrum of 1E 1048.1–5937 is well described by the sum of a power law with photon index ~2.9 and a blackbody with temperature ~0.6 keV, without evidence for significant absorption or emission lines. The above spectral parameters do not vary during the phases corresponding to the broad pulse, while the off pulse emission shows a different spectrum characterized by a soft excess at energies below ~1.5 keV. The XMM-Newton observation and a re-analysis of archival BeppoSAX data show that the spectral parameters and flux of 1E 1048.1–5937 did not change significantly during observations spanning the last four years. All the data are consistent with a 2–10 keV luminosity varying in the range ~(5–7)1033 erg s-1 (for a distance of 3 kpc).