|Title||The hard X-ray emission of Class I-II YSOs and the origin of the 6.4 keV Fe line|
|Author||Prof Salvatore Sciortino|
|Description||Class~I and II YSOs are bright sources of soft (< 10 keV) X-rays, but very little is known of their hard (> 10 keV) X-ray emission and of their inter-relation. Those YSOs can exhibit emission in the Fe Kalpha line at 6.4 keV. Its origin and site of production is still controversial, e.g., being due to flare reverberation or accelerated particles hitting the corona or the surrounding inner part of the circumstellar disk. Time resolved spectroscopy made possible with the proposed 300 ks long joint simultaneous XMM-EPIC and Nustar observations of Elias29, in the nearby (120 pc) rho Oph SFR, and of the other YSOs in the Nustar FOV will allow us to investigate, for the first time, these open questions.|
|Publication||Deep X-ray view of the Class I YSO Elias 29 with XMM-Newton and NuSTAR . Pillitteri, I., Sciortino, S., et all. . A&A . 623-67 . 2019 . 2019A&A...623A..67P ,
The complex phenomena of young stellar objects revealed by their X-ray variability . Sciortino, S., Flaccomio, E., et all. . AN . 340-334 . 2019 . 2019AN....340..334S ,
A new multiwavelength census of blazars . Paggi, A., Bonato, M., et all. . A&A . 641-62 . 2020 . 2020A&A...641A..62P ,
|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, 2018-09-01T22:00:00Z, 080003, 17.56_20190403_1200. https://doi.org/10.5270/esa-5a80qtq|