The first broad-band X-ray images and spectra of the 30 Doradus region in the LMC

Details The first broad-band X-ray images and spectra of the 30 Doradus region in the LMC The first broad-band X-ray images and spectra of the 30 Doradus region in the LMC

2000-11-23

arxiv.org/abs/astro-ph/0011438v1

Astronomy and Astrophysics

Astrophysics

to be published in A&A 365

Scientific paper

10.1051/0004-6361:20000049

We present the XMM-Newton first light image, taken in January 2000 with the EPIC pn camera during the instrument's commissioning phase, when XMM-Newton was pointing towards the Large Magellanic Cloud (LMC). The field is rich in different kinds of X-ray sources: point sources, supernova remnants (SNRs) and diffuse X-ray emission from LMC interstellar gas. The observations are of unprecedented sensitivity, reaching a few 10^32 erg/s for point sources in the LMC. We describe how these data sets were analysed and discuss some of the spectroscopic results. For the SNR N157B the power law spectrum is clearly steeper than previously determined from ROSAT and ASCA data. The existence of a significant thermal component is evident and suggests that N157B is not a Crab-like but a composite SNR. Most puzzling is the spectrum of the LMC hot interstellar medium, which indicates a significant overabundance of Ne and Mg of a few times solar.

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