High Resolution X-ray Spectroscopy of SN 1006

Jacco Vink

SRON National Institute for Space Research
Utrecht, 3584CA The Netherlands

I will discuss spectroscopic aspects of the remnant of SN 1006. SN 1006 has received a lot of attention over the last decade, mainly because of the X-ray synchrotron emission from its shell. However, the thermal emission of SN 1006 is equally interesting, as it is a remnant with one of the lowest known ionization ages (log (ne t) ~ 9.3), i.e. it is very much out of collisional ionization equilibrium. As a result there is relatively little emission from H-like ions, some elements, notably Si, have not even reached the He-like ionization state. The low ionization state has considerable consequences for the debate about whether the shocked iron abundance is high or not, which is of interest because SN 1006 is likely to have been a Type Ia event, which are thought to produce ~0.5 Msun of Fe. The low ionization age has also interesting consequences for the electron-ion temperature equilibration. I will address these topics using results obtained with high resolution XMM-Newton/RGS data, but in addition I will also show the prospects for observation of SN 1006 and other remnants with future spectroscopic missions, such as Astro-E2 and Constellation-X/Xeus.