| Proposal ID | 083180 |
| Title | The Needle in a Haystack: Combined XMM-Newton and H.E.S.S. Observations of SgrA* |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0831800101 |
| DOI | https://doi.org/10.5270/esa-vqy1s0g |
| Principal Investigator, PI | Dr Dorit Glawion |
| Abstract | Earlier studies of combined X-ray and TeV observations of Sgr A* indicatedevidence for simultaneous activity in the two bands. We propose to observe theobject HESS J1745a??290 which is positionally coincident with the center of ourgalaxy, Sgr A* with XMM-Newton and H.E.S.S. for a total of 37.5 hsimultaneously. We search for flares in the X-ray band and possible simultaneousactivity in the TeV regime which would pin-down the emission mechanisms for theproduction of gamma rays coming from Sgr A*. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2019-03-11T00:45:57Z/2019-09-20T21:00:12Z |
| Version | 21.51_20241115_1113 |
| Mission Description | The European Space Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs 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 Earths 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 | 2020-10-29T23:00:00Z |
| Last Update | 2026-07-09 |
| Keywords | "combined xray", "combined xmm newton", "object hess j1745a", "XMM-Newton", "HESS", "xray band", "gamma rays", "sgra *.", "tev regime", "XMM", "indicated evidence", "positionally coincident", "xmm newton", "emission mechanisms" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Dorit Glawion, 2020, 'The Needle in a Haystack: Combined XMM-Newton and H.E.S.S. Observations of SgrA*', 21.51_20241115_1113, European Space Agency, https://doi.org/10.5270/esa-vqy1s0g |
| Rights | Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license. |