Proposal ID | 078272 |
Title | Probing for Variable Reflection and Absorption in NGC 7582 |
Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0782720301 |
DOI | https://doi.org/10.5270/esa-v8n086k |
Principal Investigator, PI | Dr Elizabeth Rivers |
Abstract | We request a 90ks simultaneous XMM-Newton/NuSTAR observation of NGC7582 in orderto quantify the Compton reflection and absorption variability. Previousmeasurements of the exceptionally strong reflection features have suffered fromlack of high-quality data above 10 keV, preventing robust comparisons betweenobservations. Additionally, NGC7582 has undergone recent spectral changes whichcould be due to a decrease in the average luminosity of the source or increasedobscuration. Thus far, X-ray spectral investigations have been unable to fullybreak the degeneracy between these two models, however monitoring of thevariability of the spectral components will help to distinguish which scenariobest describes the geometry of circumnuclear material in this source. |
Publications |
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Instrument | RGS1, EPN, RGS2, EMOS1, OM, EMOS2 |
Temporal Coverage | 2016-04-28T04:11:56Z/2016-04-29T08:18:36Z |
Version | 17.56_20190403_1200 |
Mission Description | The European Space Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs 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 Earths 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 | 2017-05-27T22:00:00Z |
Keywords | "NGC 7582", "NuSTAR", "average luminosity", "compton reflection", "XMM", "xray spectral investigations", "circumnuclear material", "absorption variability", "spectral components", "robust comparisons", "variable reflection", "XMM-Newton", "increased obscuration", "quality data", "ngc 7582", "xmm newton" |
Publisher And Registrant | European Space Agency |
Credit Guidelines | European Space Agency, Dr Elizabeth Rivers, 2017, 'Probing for Variable Reflection and Absorption in NGC 7582', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-v8n086k |