Name | 080515 |
Title | Quantifying obscuration bias in hard X-ray AGN selection |
URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0805150401 |
DOI | https://doi.org/10.5270/esa-dwsjl9c |
Author | Mr Peter Boorman |
Description | We propose a test of obscuration bias r^ant for hard X-ray surveys of active galactic nuclei (AGN). From a representative sample of 75 local AGN selected in the far-infrared to be observed in NuSTAR legacy surveys, we have compiled a subset of objects with predicted hard X- ray fluxes placing them above the Swift/BAT 70-month catalogue detection sensitivity, but which are not detected even in deeper BAT maps. Extreme obscuration is the likely primary cause of hard X-ray deficit in all. We propose XMM-Newton observations of 8 of these that lack sensitive soft X-ray constraints. Our aim is to quantify the obscuration (i.e. orientation) bias in hard X-rays from accurate broadband X-ray fits, and ultimately, to construct an N_H distribution requiring minimal bias corrections. |
Publication | No observations found associated with the current proposal |
Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
Temporal Coverage | 2017-05-09T06:45:59Z/2017-10-30T00:54:26Z |
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 | 2018-11-13T23:00:00Z |
Publisher And Registrant | European Space Agency |
Credit Guidelines | European Space Agency, Mr Peter Boorman, 2018, 080515, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-dwsjl9c |