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.
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.
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
