A dataset provided by the European Space Agency

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


DOI https://doi.org/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 No observations found associated with the current proposal
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