| Name | 080071 |
| Title | X-Ray afterglow of SWIFT J1644+57: a Compton echo? |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0800710101 |
| DOI | https://doi.org/10.5270/esa-ttg773a |
| Author | Prof Albert Kong |
| Description | Swift, Chandra, and XMM-Newtonhave found a weak but nearly constant X-ray component from the tidal disruption event Swift J1644+57 that appeared at virgul500 days and was visible at least until virgul1400 days after the stellar capture, which cannot be explained by standard tidal disruption theories. We suggest that this X-ray afterglow component may result from the Thomson scattering between the primary X-rays and its surrounding plasma, i.e., a Compton echo effect. The proposed XMM-Newton observation will allow us to test our theory and constrain the size and geometry of the surrounding gas cloud. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2018-03-09T04:24:20Z/2018-03-09T23:17:40Z |
| 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 | 2019-04-02T22:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2019-04-02T22:00:00Z, 080071, 17.56_20190403_1200. https://doi.org/10.5270/esa-ttg773a |