X-ray vs. H2O maser emission in AGN
Abstract
Correlations between X-ray and water maser emission in AGN have been recently reported. However, the lack of systematic studies affects the confidence level of these results. In the following, we introduce a project aimed at studying all the water maser sources believed to be associated with AGN activity through X-ray data obtained with the XRT and BAT instruments on-board the Swift satellite. Preliminary results of this work indicate a promising rate of XRT detections allowing us to refine follow-up observing strategies focused on investigating the nuclei of individual galaxies and deriving, on statistical basis, the main characteristics of water maser hosts. In addition, a cross-correlation between our sample and the BAT 22-months all-sky survey provides an exceptionally high detection rate at hard X-ray energies when compared to other AGN-related catalogs.
- Publication:
-
X-ray Astronomy 2009; Present Status, Multi-Wavelength Approach and Future Perspectives
- Pub Date:
- July 2010
- DOI:
- 10.1063/1.3475255
- arXiv:
- arXiv:0912.2515
- Bibcode:
- 2010AIPC.1248..347C
- Keywords:
-
- galactic nuclei;
- X-ray spectroscopy;
- sky surveys;
- photon counting;
- accretion disks;
- 98.62.Js;
- 95.85.Nv;
- 95.80.+p;
- 42.50.Ar;
- 97.10.Gz;
- Galactic nuclei circumnuclear matter and bulges;
- X-ray;
- Astronomical catalogs atlases sky surveys databases retrieval systems archives etc.;
- Photon statistics and coherence theory;
- Accretion and accretion disks;
- Astrophysics - Cosmology and Nongalactic Astrophysics
- E-Print:
- 4 pages, 1 figure, to appear in refereed Proceedings of "X-ray Astronomy 2009: Present Status, Multi-Wavelength Approach and Future Perspectives", Bologna, Italy, September 7-11, 2009, AIP, eds. A. Comastri, M. Cappi, and L. Angelini