A dataset provided by the European Space Agency

Name 065480
Title X-ray vs. H2O maser emission in AGN


DOI 10.5270/esa-epumdsj
Author Dr Paola Castangia
Description H2O megamaser radio emission provides a unique way to map accretion disks and estimate masses of the nuclear engines in AGN. An accurate analysis of X-ray spectra instead allows us to estimate column densities providing a direct measure of the nuclear activity. So far, H2O maser sources associated to AGN tend to show a high column density or are even Compton-thick. Unfortunately, the statistics of these studies are still poor, because of the lack of X-ray data for a large percentage of known maser galaxies. Here we propose to take advantage of the higher sensitivity of XMM to follow-up a small sample of sources detected by Swft-XRT, for which the low number of counts in the spectra above 2 keV prevented us to derive an accurate value of the column density.
Publication New Compton-thick AGN in the circumnuclear H2O maser hosts UGC 3789 and NGC 6264 . Castangia, P., Panessa, F., et all. . MNRAS . 436-3388 . 2013 . 2013MNRAS.436.3388C ,
Serendipitous UV source catalogues for 10 years of XMM and 5 years of Swift . Yershov, V. N., . Ap&SS . 354-97 . 2014 . 2014Ap&SS.354...97Y ,
XMM-Newton publication statistics . Ness, J.-U., Parmar, A. N., et all. . AN . 335-210 . 2014 . 2014AN....335..210N ,
The circumnuclear environment of NGC 613: a nuclear starburst caught in the act? . Falcon-Barroso, J., Ramos Almeida, C., et all. . MNRAS . 438-329 . 2014 . 2014MNRAS.438..329F ,
Ensemble X-ray variability of active galactic nuclei. II. Excess variance and updated structure function . Vagnetti, F., Middei, R., et all. . A&A . 593-55 . 2016 . 2016A&A...593A..55V ,
The Million Optical - Radio-X-ray Associations (MORX) Catalogue . Flesch, Eric W., . PASA . 33-52 . 2016 . 2016PASA...33...52F ,
Optical spectroscopy of candidates for quasars at 3 < z < 5.5 from the XMM-newton X-ray survey. A distant X-ray quasar at z = 5.08 . Khorunzhev, G. A., Burenin, R. A., et all. . AstL . 43-135 . 2017 . 2017AstL...43..135K ,
AGN spectral states from simultaneous UV and X-ray observations by XMM-Newton . Svoboda, J., Guainazzi, M., . A&A . 603-127 . 2017 . 2017A&A...603A.127S ,
The c...
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2010-08-26T00:47:59Z/2011-03-05T00:27:23Z
Version 17.56_20190403_1200
Mission Description The European Space Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's second cornerstone of the Horizon 2000 Science Programme. It carries 3 high throughput X-ray telescopes with an unprecedented effective area, and an optical monitor, the first flown on a X-ray observatory. The large collecting area and ability to make long uninterrupted exposures provide highly sensitive observations.
Since Earth's atmosphere blocks out all X-rays, only a telescope in space can detect and study celestial X-ray sources. The XMM-Newton mission is helping scientists to solve a number of cosmic mysteries, ranging from the enigmatic black holes to the origins of the Universe itself. Observing time on XMM-Newton is being made available to the scientific community, applying for observational periods on a competitive basis.
Creator Contact https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk
Date Published 2012-03-30T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2012-03-30T00:00:00Z, 065480, 17.56_20190403_1200. https://doi.org/10.5270/esa-epumdsj