|Title||X-ray view of a new changing-look AGN discovered by LAMOST quasar survey|
|Author||Dr Su Yao|
|Description||Few active galactic nuclei (AGNs) changed from Type 1 to Type 1.8-2.0, or vice versa. The nature of the transition is still not understood. We propose an XMM-Newton observation on a new changing-look AGN, which was discovered in LAMOST quasar survey. The object transitioned from Type 1.9 to Type 1. In particular, it was serendipitously detected by the XMM-Newton slew survey before the transition. Thus a new X-ray spectroscopy not only can make a direct comparison of its X-ray flux before and after the type transition, but also can constrain the absorption column density along the line of sight, shedding light on the nature of the changing-look. Moreover, a simultaneous photometric data obtained by OM will provide clues of variation in optical band along with the X-rays.|
|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, 2019-07-26T22:00:00Z, 082039, 17.56_20190403_1200. https://doi.org/10.5270/esa-d0bvsft|