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A Detailed Observation of a LMC SNR, DEM L241, with XMM-Newton

Published online by Cambridge University Press:  12 May 2006

Aya Bamba ,
Masaru Ueno ,
Hiroshi Nakajima ,
Koji Mori  and
Katsuji Koyama
Aya Bamba
Affiliation:
RIKEN (The Institute of Physical and Chemical Research) 2-1, Hirosawa, Wako, Saitama 351-0198, Japan email: bamba@crab.riken.jp
Masaru Ueno
Affiliation:
Department of physics, Faculty of Science, Tokyo Institute of Technology 2-12-1, Oo-okayama, Meguro-ku, Tokyo 152-8551, Japan email: masaru@hp.phys.titech.ac.jp
Hiroshi Nakajima
Affiliation:
Department of Physics, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan email: nakajima@cr.scphys.kyoto-u.ac.jp, koyama@cr.scphys.kyoto-u.ac.jp
Koji Mori
Affiliation:
Department of Applied Physics, Faculty of Engineering University of Miyazaki, 1-1 Gakuen Kibana-dai Nishi Miyazaki, 889-2192, Japan email: mori@astro.miyazaki-u.ac.jp
Katsuji Koyama
Affiliation:
Department of Physics, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan email: nakajima@cr.scphys.kyoto-u.ac.jp, koyama@cr.scphys.kyoto-u.ac.jp
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Abstract

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We report on an XMM-Newton observation of the supernova remnant (SNR) DEM L241 in the Large Magellanic Cloud. In the soft band image, the emission shows an elongated structure, like a killifish (Head and Tail), with a central point source, named as XMMU J053559.3–673509 (Eye). The Eye's spectrum is well reproduced with a power-law model. The source has neither significant coherent pulsations nor time variabilities. Its luminosity and spectrum remind us that the source might be a pulsar and/or pulsar wind nebula in DEM L241. The spectra of Head and Tail are well reproduced by a non-equilibrium ionization plasma model with over-abundant Ne and under-abundant Fe, suggesting that the progenitor of DEM L241 is a very massive star.

Keywords

supernova remnantsX-rays: individual (DEM L241)X-rays: individual (XMMU J053559.3–673509)
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 1 , Symposium S230: Populations of High Energy Sources in Galaxies , August 2005 , pp. 31 - 32
Copyright
2006 International Astronomical Union