|
|
The Chandra & XMM-Newton X-ray Source Quick Viewer is to provide a quick view of all observations of a source by two state-to-art X-ray observatories, i.e., XMM-Newton and Chandra, at the same time to see the overall properties of the source. It is also useful for identifying many kinds of measurement problems of their source catalogs. This service is still improving and is not finalized yet.
Using this service, it is easy to check, but not limit to, the following:
- Whether the source is spectral or flux variables; Whether in any detection the source is soft or hard.
- Whether the pn and MOS give inconsistent results, producing spurious variability.
- Whether there are stellar X-ray flares, and whether they are accompanied by hardening of the spectra.
- Whether a unique source has been split into multiple source IDs
- Whether there are observations when the sources are not detected.
- Whether a source is spurious because it is very close to a bright source, or because it is in the region due to single reflection, or two near sources are combined to one source, etc.
- Whether it has large proper motion by comparing the optical and IR images which are taken at different epochs; whether the failure to detect the optical or IR counterpart is due to high proper motion.
- Whether the source is in a crowded field of optical/IR sources and the counterpart may be wrong.
In the following is a sample output using the tidal disruption event candidate 2XMMi J184725.1-631724 that I discovered from the XMM-Newton source catalog.
|
|
|
