|Title||Monitoring a close encounter between a small cloud and a supermassive BH|
|Author||Dr Gabriele Ponti|
|Description||A gas cloud, dubbed G2, was recently discovered to be falling towards Sgr A*. This allows us to witness the unique occurrence of a cloud interacting with the BH.s close environment and likely partially accreting. We propose 4*50 ks XMM observations to: i) monitor the long term variations of the X-ray flux produced by Sgr A* as it interacts with the cloud; ii) monitor any variation, induced by the cloud flyby, to the frequency and intensity of Sgr A*.s flaring activity; iii) use the magnetar.s light echo and its variations to scan the Galactic centre matter distribution around Sgr A*; iv) monitor the evolution of the superluminal echo reflected from the Bridge.|
|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, 2016-05-06T22:00:00Z, 074363, 17.56_20190403_1200. https://doi.org/10.5270/esa-dt0hzik|