Long-term X-ray and Optical Study of the Black Hole X-ray Binaries in the Elliptical Galaxy NGC 4472
Abstract
We propose to observe the Virgo elliptical NGC 4472 and its black hole binaries with Chandra for 25 ks once in each of the next three cycles. We also propose to obtain Gemini spectroscopy of the optical emission line from the black hole source RZ2109 over this same time interval. These data will be used to - 1) track the X-ray variability of RZ2109, 2) compare this variability seen in X-rays to that seen in the optical [OIII]5007 emission line, in order to constrain the overall spatial scale of this emission and the nature of this back hole source, 3) test for variability of the second globular cluster black hole X-ray source CXOU 1229410+0757442, and 4) use the time domain information to search for the presence of any new black hole sources in this galaxy.
- Publication:
-
Chandra Proposal
- Pub Date:
- September 2013
- Bibcode:
- 2013cxo..prop.3895Z