High Resolution X-ray Spectroscopy of SN 1006

Details High Resolution X-ray Spectroscopy of SN 1006 High Resolution X-ray Spectroscopy of SN 1006

2004-12-16

arxiv.org/abs/astro-ph/0412447v1

Astronomy and Astrophysics

Astrophysics

11 pages, 8 figures (14 ps files including color figures). LaTeX format, uses aipproc.cls, aip-6d.clo, and aipxfm.sty; to appe

Scientific paper

10.1063/1.1960935

I discuss the high resolution XMM-Newton Reflection Grating Spectrometer (RGS) spectrum of SN1006. SN1006 is one of the best examples of a supernova remnant that is far out of ionization equilibrium. Moreover, optical, UV and X-ray data indicate that it is also out of temperature equilibrium. I discuss the X-ray evidence for this. In addition I discuss the lower resolution RGS spectrum of the eastern rim of SN 1006. Despite the lower resolution, the spectrum contains significant evidence for an asymmetric expansion velocity. Two likely solutions fit the O VII triplet. One with no significant thermal broadening and a shell velocity of \~6500 km/s, and one with significant broadening and a shell velocity of ~9500 km/s. The first solution seems the most plausible, as it is consistent with radio expansion measurements, which suggest a decelerated shell.

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