| Name | 082497 |
| Title | Recognizing Megamaser Galaxies from X-Ray Spectral Surveys |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0824970301 |
| DOI | https://doi.org/10.5270/esa-3x3tl7s |
| Author | European Space Agency |
| Description | Our extensive archival survey of XMM-Newton observations of water megamaser galaxies revealed an important result\: we can tell apart megamaser and non-megamaser active galaxies from the shape of their X-ray spectra. Maser have more complex X-ray spectra than non-masers. This general rule is derived from a comparison of 37 maser and 38 non-maser sources. With our criteria, we can characterize 34 out of 37 sources as maser galaxies. The analysis of the 3 remaining sources was inconclusive due to their low-quality archival spectra. To confirm our hypothesis and construct clean training sample for automated maser surveys, we propose re-observations of these 3 maser sources. Once confirmed, this result will yield strong constraints on target-selection criteria for future maser surveys. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2019-01-26T05:26:45Z/2019-01-26T11:50:04Z |
| 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 | 2020-02-18T23:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2020, Recognizing Megamaser Galaxies From X-Ray Spectral Surveys, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-3x3tl7s |