SNR N49 in the LMC: X-Ray Emission from Multi-Phase Shock And Neutron Star
Abstract
The supernova remnant (SNR) N49 in the Large Magellanic Cloud has been observed with the Advanced CCD Imaging Spectrometer (ACIS) on board Chandra X-Ray Observatory. The superb angular resolution of the Chandra/ACIS images resolve the point-like source, presumably the X-ray counterpart of SGR 0526-66, and the diffuse filaments and knots across the SNR. The X-ray spectrum from the detected point-like source is consistent with the suggested identification as an Anomalous X-ray Pulsar. We detect the Si-rich ejecta beyond the main blast wave shock boundary in the southwest of the SNR, which appear to be the explosion fragments or "bullets" ejected from the progenitor star. The detection of strong H-like Si line emission in the eastern side of the SNR requires two-temperature plasma to describe the observed X-ray spectrum, whereas such a multi-phase plasma is not evident in the western side. This complex spectral structure of N49 indicates that the blast wave shock is interacting with clumpy molecular clouds in the south-east of the SNR.
- Publication:
-
34th COSPAR Scientific Assembly
- Pub Date:
- 2002
- Bibcode:
- 2002cosp...34E2191P