X-ray Spectrometry of SN1987A
收藏资源简介:
Since Jan. 2007, our yearly XMMNewton monitoring of SN 1987A yields EPIC andRGS spectra of unprecedented quality. The fluxes and broadening of the numerousemission lines provide information on the evolution of the Xray emitting plasma and its dynamics. The soft Xray light curve shows a significant flatteningafter 2006. To further monitor the turnover we propose to continue our XMMNewton monitoring of SN 1987A. This will allow us to further study the timeevolution of the shock conditions and abundance profiles of, e.g., N, O, Fe, Ne.At high energies EPICpn can help to clarify the low Fe abundance observed sofar. Is the Fe completely swallowed by the central compact object or is theemission from the inner sections of the progenitor star still absorbed? truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]



