|Title||Exploring the X-ray emission mechanism in the variable Seyfert 1, 1H 0419-577|
|Author||Prof Ken Pounds|
|Description||A brief 8 ksec observation of the bright Seyfert 1 1H 0419-577 early in the XMM mission showed the source to be a considerably brighter state (by a factor of 10) than 4 years earlier. Our first aim is to employ the full spectroscopic capability of XMM-Newton, in a repeated and longer (50 ksec) observation. Past observations of 1H 0419 show it to be a unique object, switching between low-hard and high-soft spectral states, analogous to the Galactic black hole sources. Our second objective is to monitor 1H 0419-577 (visible throughout the whole of the AO-2 period) with a series of 15 ksec observations, to constrain the timescale of the change of state and to follow its spectral evolution. We hope this will yield new insights into the emission mechanism in AGN.|
|Publication||No observations found associated with the current proposal|
|Instrument||EMOS1, EMOS2, EPN, OM, RGS1, RGS2|
|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.
|Publisher And Registrant||European Space Agency|
|Credit Guidelines||European Space Agency, 2005-01-01T00:00:00Z, 014800, 17.56_20190403_1200. https://doi.org/10.5270/esa-9kpw74k|