|Title||Monitoring the close encounter between a small cloud and a supermassive BH|
|Author||Dr Gabriele Ponti|
|Description||Earlier this year a gas cloud was discovered to be falling (accelerating) towards SgrA* and it is predicted to reach peribothron (at 2200 rS) in September 2013. At a minimum, the cloud-SgrA* interaction is expected to induce enhanced emission varying on timescales of months-years. However, the cloud physics and SgrA*.s close environment are not well understood. We propose 4*50ks XMM observations to study the near-future evolution of the cloud. Its emission properties will be a sensitive probe of the characteristics of the accretion flow onto the supermassive Galactic BH, at milli-parsec scales.|
|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, 2014-10-10T00:00:00Z, 072421, 17.56_20190403_1200. https://doi.org/10.5270/esa-wbpoh3o|