| Name | 040243 |
| Title | Coordinated XMM-Newton and HST monitoring of SgrA* |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0402430301 |
| DOI | https://doi.org/10.5270/esa-ulwawwg |
| Author | Dr Delphine Porquet |
| Description | We propose to carry out further monitoring of the central supermassive black hole in Sgr A* in X-rays and the near-IR with simultaneous XMM-Newton and HST observations. Our goal is to determine the physical mechanisms governing the accretion onto a supermassive black hole when the accretion luminosity is at an extremely low level. X-ray flares are very likely to be produced within 10 Schwarzschild radii and hence probe the environment very close to the black hole. By investigating the correlation of X-ray and near-IR light curves for flares of different luminosities and broad-band spectral characteristics we hope to test whether current synchrotron-inverse Compton models for the flare production are valid. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2007-03-30T21:05:17Z/2007-04-04T19:54:54Z |
| Version | 17.56_20190403_1200 |
| 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. |
| Creator Contact | https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk |
| Date Published | 2008-07-01T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2008-07-01T00:00:00Z, 040243, 17.56_20190403_1200. https://doi.org/10.5270/esa-ulwawwg |