A dataset provided by the European Space Agency

Name 080071
Title X-Ray afterglow of SWIFT J1644+57: a Compton echo?


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