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Kirsch, M. G. F.; Schoenherr, G.; Kendziorra, E.; Freyberg, M. J.; Martin, M.; Wilms, J.; Mukerjee, K.; Breitfellner, M. G.; Smith, M. J. S.; Staubert, R. (2006)
Publisher: EDP Sciences
Languages: English
Types: Preprint
Subjects: QB, Astrophysics

Classified by OpenAIRE into

arxiv: Astrophysics::High Energy Astrophysical Phenomena
Aims. We discuss the current X-ray view of the Crab Nebula and Pulsar, summarising our analysis of observations of the source with the EPIC-pn camera on board the XMM-Newton observatory. Different modes of EPIC-pn were combined in order to yield a complete scenario of the spectral properties of the Crab resolved in space and time (pulse phase). In addition we give a description of the special\ud EPIC-pn Burst mode and guidance for data reduction in that mode.\ud Methods. We analysed spectra for the nebula and pulsar separately in the 0.6−12.0 keV energy band. All data were processed with the\ud SAS 6.0.0 XMM-Newton Scientific Analysis System package; models were fitted to the data with XSPEC 11. The high time resolution of EPIC-pn in its Burst mode (7 μs) was used for a phase resolved analysis of the pulsar spectrum, after determination of the period with epoch folding techniques. Data from the SmallWindow mode were processed and corrected for pile-up allowing for spectroscopy\ud simultaneously resolved in space and time.\ud Results. The spatial variation of the spectrum over the entire region of the Crab shows a gradual spectral softening from the inner pulsar region to the outer nebula region with a variation in photon index, Γ, from 2.0 to 2.4. Pulse phase resolved spectroscopy of the Crab Pulsar reveals a phase dependent modulation of the photon index in form of a significant hardening of the spectrum in the\ud inter-peak phase from Γ = 1.7 during the pulse peak to Γ = 1.5.
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

    • Ehle, M., et al. 2003, XMM-Newton Users Handbook, Issue 2.1 den Herder, J. W., Brinkman, A. C., Kahn, S. M., et al. 2001, A&A, 365, L7 Jansen, F., Lumb, D., Altieri, B., et al. 2001, A&A, 365, L1 Kendziorra, E., Colli, M., Kuster, M., et al. 1999, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy X, ed. O. Siegmund, & K. A. Flanagan, Proc. SPIE, 3765, 204
    • Kuster, M., Benlloch, S., Kendziorra, E., & Briel, U.G. 1999, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy X, ed. O. Siegmund, & K. A. Flanagan, Proc. SPIE, 3765, 673
    • Meidinger, N., et al. 1999, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy X, ed. O. Siegmund, & K. A. Flanagan, Proc. SPIE, 3765, 192 Mason, K. O., Breeveld, A., Much, R., et al. 2001, A&A, 365, L36 Massaro, E., Cusumano, G., Litterio, M., & Mineo, T. 2000, A&A, 361, 695 Mori, K., Burrows, D. N., Hester, J. J., et al. 2004, ApJ, 609, 186 Pfeffermann, E., et al. 1999, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy X, ed. O. Siegmund, & K. A. Flanagan, Proc. SPIE, 3765, 184 Pravdo, S. H., & Serlemitsos, P. J. 1981, ApJ, 246, 484
    • Pravdo, S. H., Angelini, L., & Harding, A. K. 1997, ApJ, 491, 808 Staelin, D. M., & Reifenstein, E. C. 1968, Science, 162, 1481 Strüder, L., Briel, U., Dennerl, K., et al. 2001, A&A, 365, L18 Turner, M. J. L., Abbey, A., Arnaud, M., et al. 2001, A&A, 365, L27 Willingale, R., Aschenbach, B., Griffiths, R. G., et al. 2001, A&A, 365, L212
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