|Title||Completing the Missing X-ray Information of Newly Discovered gamma-ray NLS1|
|Author||Mr Su Yao|
|Description||As hybrids of NLS1s and blazars, the recently discovered gamma-ray emitting NLS1s excited a great interests to the AGN community. With relatively small black hole (BH) mass and accreting close to Eddington, these NLS1s provides a new perspective to investigate the properties and formation of jets and their coupling with BH accretion. However, gamma-ray emitting NLS1s are rare and there are only sevend significantly detected in the gamma-ray band and being studied so far. We propose to observe a newly discovered gamma-ray NLS1 with XMM-Newton in the X-ray, UV and optical bands. These observations will help to complete the missing X-ray spectral and temporal information and constructing its broad band SED, which are crucial for modeling and constraining the jet parameters in this object.|
|Publication||SDSS J211852.96-073227.5: a new gamma-ray flaring narrow-line Seyfert 1 galaxy . Yang, Hui, Yuan, Weimin, et all. . MNRAS . 477-5127 . 2018 . 2018MNRAS.477.5127Y ,
General Physical Properties of Gamma-Ray-emitting Narrow-line Seyfert 1 Galaxies . Paliya, Vaidehi S., Parker, M. L., et all. . ApJ . 872-169 . 2019 . 2019ApJ...872..169P ,
A Comparison of X-Ray Photon Indices among the Narrow- and Broad-line Seyfert 1 Galaxies . Ojha, Vineet, Chand, Hum, et all. . ApJ . 896-95 . 2020 . 2020ApJ...896...95O ,
|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, 2017-11-22T23:00:00Z, 078409, 17.56_20190403_1200. https://doi.org/10.5270/esa-psouqcq|