|Measuring Absolute Abundances in NGC 5548 and Linking the UV and X-ray Outflows
|Dr Gerard Kriss
|We propose to obtain HST-COS spectra of the Seyfert 1 galaxy NGC 5548 with 9 orbits in conjunction with 60 ks of XMM-Newton time. Our observations will measure absolute abundances anchored by accurate H I column densities for both the narrow and broad UV absorption lines. These will add fidelity to our measurements of the outflowing mass flux and kinetic energy obtained in our 2013 campaign using XMM-Newton and COS, and solve discrepancies between the UV and X- ray absorbers in NGC 5548. Due to the profound influence of the new soft X-ray obscurer in NGC 5548 discovered during our 2013 campaign, simultaneous X-ray spectra are essential for determining the ionizing spectral energy distribution.
|No observations found associated with the current proposal
|EMOS1, EMOS2, EPN, OM, RGS1, RGS2
|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.
|Publisher And Registrant
|European Space Agency
|European Space Agency, 2017, 077100, 17.56_20190403_1200. https://doi.org/10.5270/esa-cbzytqe