|XMM-Newton Observations of Two Super-Eddington Accreting Tidal Disruption Events
|Dr Dacheng Lin
|Observational evidence for super-Eddington accretion in tidal disruption events (TDEs), though long suspected, has been vague. A decade-long TDE recently discovered by us suggested that the super-Eddington accretion phase in a TDE can be characterized by quasi-soft X-ray spectra (kTvirgul0.3 keV) at around the Eddington luminosity. It is critical to study more such objects to test this implication. We have discovered two new events in two recent XMM-Newton observations with such super-Eddington accretion characteristics. We request to follow up both of them (24 ks each) by XMM-Newton in AO17 to search for spectral state transition and monitor flux decay, in order to confirm their super-Eddington accreting TDE nature.
|No observations found associated with the current proposal
|EMOS1, EMOS2, EPN, OM, RGS1, RGS2
|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.
|Publisher And Registrant
|European Space Agency
|European Space Agency, 2019, 082327, 17.56_20190403_1200. https://doi.org/10.5270/esa-9s60y0c