| Name | 078316 |
| Title | Sgr D and Sgr E: two distant witnesses of Sgr A*.s past activity |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0783160101 |
| DOI | https://doi.org/10.5270/esa-juu2ia2 |
| Author | Dr Maica Clavel |
| Description | We propose two XMM observations of 100 ks each to capture the echo of Sgr A*.s past flares before they leave the central molecular zone. These observations of the distant molecular clouds Sgr D and E with XMM.s large effective area are required to extend our knowledge of Sgr A*.s past light curve further back in time. It will permit us to extend our global study of the GC X-ray diffuse emission, which concludes that two short events happening few hundred years ago and currently propagating through the ISM are sufficient to explain all the variations we have detected. The objective of this project is to fully identify an older outburst from Sgr A*. This will better constrain the frequency of these past events and bring us closer to establishing their physical origin. |
| Publication | No observations found associated with the current proposal |
| Instrument | EPN, RGS1, OM, RGS2, EMOS1, EMOS2 |
| Temporal Coverage | 2016-10-02T22:51:10Z/2016-10-04T04:17:50Z |
| 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 | 2017-10-17T22:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Maica Clavel, 2017, 078316, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-juu2ia2 |