Tracking the Ulx Population Activity in the Circinus Galaxy during the Ixpe Observation
Abstract
We propose a ToO observation of the nuclear region of the Circinus Galaxy with one follow-up, 10 ks long each, simultaneous to the IXPE (Imaging X-ray Polarimeter Explorer) pointing of the source. We aim at monitoring the flux level of the two Ultra Luminous X-ray sources (ULXs) CG X-1 and CG X-2, which might potentially contaminate the measurement of the polarization signal from the Active Galactic Nucleus (AGN). With its superior angular resolution, Chandra is the only X-ray observatory on orbit which will allow us to disentangle the emission of CG X-1 and CG X-2 from the one of the AGN. Since CG X-1 varies on timescales of weeks, we require an ACIS-S observation at the beginning and another one at the end of the IXPE pointing (which is about 20 days long).
- Publication:
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Chandra Proposal
- Pub Date:
- September 2021
- Bibcode:
- 2021cxo..prop.6132M
- Keywords:
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- Chandra Proposal ID #23700227