|Title||A New Class of X-ray Transients? Highly Luminous XMM Transients|
|Author||Dr Richard Mushotzky|
|Description||Finding X-ray counterparts to future LIGO-Virgo events requires an understanding of the transient sky at low redshift. We have identified 7 nearby (D < 300 Mpc) transients in the XMM-Newton Slew Survey Catalog via a systematic comparison with the ROSAT All Sky Survey. These sources have unusual properties and so are difficult to characterize. They are highly luminous (>1e42 erg-s), extremely variable, associated with galaxies within 300 Mpc, and lack optical AGN signatures. We propose to observe these seven targets with XMM-Newton in an attempt to identify their nature. The sources could prove to be tidal disruption events, GRB afterglows, very high energy ULXs, or some new class. This is the first study of X-ray transients within the LIGO-Virgo horizon.|
|Publication||The Million Optical - Radio-X-ray Associations (MORX) Catalogue . Flesch, Eric W., . PASA . 33-52 . 2016 . 2016PASA...33...52F ,
Multiwavelength Study of an X-Ray Tidal Disruption Event Candidate in NGC 5092 . Li, Dongyue, Saxton, R. D., et all. . ApJ . 891-121 . 2020 . 2020ApJ...891..121L ,
Infrared colours and spectral energy distributions of hard X-ray selected obscured and Compton-thick active galactic nuclei . Kilerci Eser, Ece, Goto, T., et all. . MNRAS . 494-5793 . 2020 . 2020MNRAS.494.5793K ,
|Instrument||EMOS1, EMOS2, EPN, OM, RGS1, RGS2|
|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.
|Publisher And Registrant||European Space Agency|
|Credit Guidelines||European Space Agency, 2015-01-20T23:00:00Z, 072183, 17.56_20190403_1200. https://doi.org/10.5270/esa-970668r|